Kinematic Mirror Mounts with Two Adjusters

Kinematic Mirror Mounts for Ø7 mm, Ø10 mm, Ø1/2", Ø1", and Ø2" Optics
Setscrew or SM-Threaded Optic Retention
Angular Adjustment Ranges of ±3° or ±4°

KM100

For Ø1" Optics

Application Idea

KM200T SM2-Threaded Thin Optic Mount with
Dichroic Mirror and PIAK10 Piezo Inertia Actuator

KM100CP

For Ø1" Optics,
Post Centered

MK7

For Ø7 mm Optics

KM05T

For Ø1/2" Optics, SM05 Threaded

Please Wait

Overview
Mirror Info
Threading Specs
Smart Pack
Feedback

Video 1.1 The knobs on our kinematic mirror mounts can be removed to reduce the footprint of the mount.

Quick Links
Optic Size	Mount Type
Ø7 mm	Mini-Series
Ø10 mm	Mini-Series
Ø1/2"	Mini-Series
	Standard
	SM05-Threaded
Ø1"	Standard
Ø1"	SM1-Threaded
Ø2"	Standard
Ø2"	SM2-Threaded
Hex Key Adjusters

Features

Double-Bore and Setscrew Retention Mounts for Ø7 mm, Ø10 mm, Ø1/2", Ø1", or Ø2" Optics
SM-Threaded Mounts Available for Thin Ø1/2", Ø1", or Ø2" Optics or Threaded Components
Hardened Steel Inserts at Kinematic Contact Points to Reduce Wear
Phosphor Bronze Bushings and Stainless Steel Lead Screws for Smooth Adjustment
Fabricated from Black Anodized Aluminum
Mounting Holes Enable Left-Handed or Right-Handed Operation

Thorlabs offers two-adjuster kinematic mirror mounts with double-bore setscrew retention or with SM-threaded bores for stress-free mounting of thin optical components or mounting SM-threaded components. These mounts offer an angular adjustment range of ±4° (±3° for Ø2" mounts) and are all mountable in left- or right-handed orientations. Mini-series mounts are compatible with Ø6 mm mini-series posts, while standard and SM-threaded mounts are compatible with Ø1/2" posts. Post-centered versions of Ø1/2", Ø1", and Ø2" mounts with double-bore and setscrew retention are also available; these allow a beam incident at 45° to be easily aligned with an optical table's hole matrix.

The knobs on the Ø1" and Ø2" mounts are removable, thereby exposing the hex sockets at the end of the lead screws, as shown in Video 1.1. The knobs also feature a through-hole design allowing fine adjustment with a hex key while the knobs are still attached.

Mini-Series and Standard Mounts
The mini-series and standard mounts secure the mirror at three points using a nylon-tipped locking screw and a double-bored mounting hole. For your convenience, the popular KM100 and KM200 mounts can be purchased prepackaged with one of our broadband dielectric-coated mirrors at a discount to the individual component prices; please see the product listings below for the available selection. More information regarding the general specifications and the reflectance of each coating across its spectral range is available under the Mirror Info tab.

SM-Threaded Mounts
These mounts feature an SM05-threaded (0.535"-40), SM1-threaded (1.035"-40), or SM2-threaded (2.035"-40) bore and include two retaining rings for securing the optic, making them useful for stress-free mounting of thin optics. They are also compatible with SM-threaded components.

Thorlabs also offers a variety of other two and three adjuster mirror mounts, including Ø3" and Ø4" mirror mounts and our high-stability Polaris^® Mirror Mounts.

A complete presentation of the available information on the broadband dielectric coated mirrors that come premounted in the KM series of kinematic mirror mounts can be seen by following this link. However, the general specifications are shown in Table 2.1, and the spectral operating range and the reflectivity as a function of wavelength for an unpolarized beam incident at 45° are shown in Table 2.2.

Table 2.1 Common Specifications
Substrate Material	Fused Silica
Flatness	λ/10
Surface Quality	10-5 Scratch- Dig
Back Surface	Fine Ground
Clear Aperture	>90% of Diameter
Thickness Tolerance	±0.2 mm
Diameter Tolerance	+0.00/-0.10 mm

Table 2.2 Specifications
Mirror	Spectral Range (Click for Plot)	Damage Threshold
UV Laser Mirror (KM100-E01)	350 - 400 nm	Pulse	1 J/cm² (355 nm, 10 ns, 10 Hz, Ø0.373 mm)
Visible Laser Mirror (KM100-E02) (KM200-E02)	400 - 750 nm	Pulse	0.25 J/cm² (532 nm, 10 ns, 10 Hz, Ø0.803 mm)
Visible Laser Mirror (KM100-E02) (KM200-E02)	400 - 750 nm	CW^a,b	550 W/cm (532 nm, Ø1.000 mm)
Near IR Laser Mirror (KM100-E03) (KM200-E03)	750 - 1100 nm	Pulse	1 J/cm² (810 nm, 10 ns, 10 Hz, Ø0.133 mm), 0.5 J/cm² (1064 nm, 10 ns, 10 Hz, Ø0.433 mm), 0.205 J/cm² (800 nm, 99 fs, 1000 Hz, Ø0.166 mm)
Near IR Laser Mirror (KM100-E03) (KM200-E03)	750 - 1100 nm	CW^a,b	10 kW/cm (1070 nm, Ø0.971 mm)
1.28 - 1.6 µm Laser Mirror (KM100-E04)	1280 - 1600 nm	Pulse	2.5 J/cm² (1542 nm, 10 ns, 10 Hz, Ø0.181 mm)
1.28 - 1.6 µm Laser Mirror (KM100-E04)	1280 - 1600 nm	CW^a,b	350 W/cm (1540 nm, Ø1.030 mm)

The stated damage threshold is a certification measurement, as opposed to a true damage threshold (i.e., the optic was able to withstand the maximum output of the laser with no damage).
The power density of your beam should be calculated in terms of W/cm. For an explanation of why the linear power density provides the best metric for long pulse and CW sources, please click here.

Click to Enlarge

Threading Specifications

The following is a general overview of screw threading. For more details regarding specifications and dimensions, please consult the Machinery's Handbook, available for purchase at many bookstores.

Features of a Thread
A thread consists of three repeating features: a crest, flank, and root (see drawing to the right). Except in special cases, threads have symmetrical sides inclined at equal angles when a vertical line is drawn through the center of a crest or root. The distance between corresponding points on adjacent threads is known as the pitch of the thread. The flank angle is defined as the angle the flank makes with a perpendicular ray drawn from the screw axis. Unless otherwise stated, threads have a flank angle of 30°, resulting in a total angle between flanks of 60°. Each feature is shown in the diagram to the right.

The major diameter is taken from the crests of a thread while the minor diameter is taken from the roots. For most screws, crests and roots do not terminate at a sharp point, so crest and root truncation values are included in the definitions of major and minor diameter. The pitch diameter is approximately halfway between the major and minor diameters.

Thread Form
A thread form is a set of rules that define the features' scale relative to one another. Common thread forms include the Unified Screw Thread Form, used in the United States of America and measured in imperial units, and the ISO Metric Screw Thread Form, used in many parts of the world and measured with the International System of Units. There are many thread forms in the Unified screw thread standard designated by either UN, which defines a flat root contour, or UNR, which defines a round root contour. These can be further described by appending more letters. For example, an extremely fine thread with a flat root contour is designated UNEF. Those forms which are not standardized by the Unified screw thread system are designated UNS.

Thread Series
Most screws are identified by their thread series. Thread series are denoted by the major diameter and density of threads. Unified threads specify density in threads per inch, while Metric threads specify the thread pitch. For example, in the Unified nomenclature, a 1/4"-20 cap screw has a 1/4" diameter barrel and the pitch is 20 threads per inch (TPI). In metric nomenclature, an M4 x 0.7 cap screw has a 4 mm barrel and the pitch is 1 thread per 0.7 mm. The term M4 x 0.7 is often shortened to just M4.

Unified Thread Class Tolerancing
Location	Loose	Optimal	Strict
Internal	1B	2B	3B
External	1A	2A	3A

Metric Thread Tolerance Positions
Location	Loose	Optimal	Strict
Internal	-	G	H
External	e or f	g	h

Metric Thread Tolerance Grades
Dimension	Location	Tolerance Grades^a
Minor Diameter	Internal	4, 5, 6, 7, 8
Major Diameter	External	4, 6, 8
Pitch Diameter	Internal	4, 5, 6, 7, 8
Pitch Diameter	External	3, 4, 5, 6, 7, 8, 9

The tolerance becomes looser as the grade increases. The underlined grades are used with normal lengths of thread engagement.

Thread Class
The tolerances and allowances on a thread series are given by a thread class. Unified thread classes are alphanumeric identifiers starting with a number from 1 through 3, where 1 is the loosest tolerance and 3 is the tightest, and either A for external threading or B for internal threading.

Metric threads have a slightly more complex tolerancing method that uses tolerancing grades, designated by a number 3 through 9; and tolerancing positions, which use letters e through h. Grades provide a measure of the tolerance itself: the smaller the number, the tighter the tolerance. Positions denote the distance of the tolerance from the pitch diameter. Uppercase positioning letters indicate internal threads while lowercase positioning letters indicate external threads.

Quoting from the Machinery's Handbook, 29th Edition, p. 1885: "To designate the tolerance class, the grade and position of the pitch diameter is shown first followed by that for the major diameter in the case of the external thread or that for the minor diameter in the case of the internal thread, thus 4g6g for an external thread and 5H6H for an internal thread. If the two grades and positions are identical, it is not necessary to repeat the symbols, thus 4g, alone, stands for 4g4g and 5H, alone, stands for 5H5H."

Thorlabs' SM Series Threads
Threading specifications for our SM threads, utilized in our lens tube and cage system components, are given below so that you can machine mating components to suit your application. Most SM series threads utilize a non-standard Unified thread form, indicated by the letters UNS, with a 30° flank angle and a thread class of 2A and 2B. The exception is our SM30 series thread, which is a Metric thread form with a 30° flank angle and a tolerance of 6H/6g. We also offer products with C-Mount and RMS threads, and the specifications for these threads are given below for reference. Please note that other manufacturers may have different tolerances for C-Mount and RMS threads. For other thread specifications that are not listed here, please contact Tech Support.

SM05 Threading: Ø1/2" Lens Tubes, 16 mm Cage Systems
External Thread, 0.535"-40.0 UNS-2A		Internal Thread, 0.535"-40.0 UNS-2B
Max Major Diameter	0.5340"	Min Major Diameter	0.5350"
Min Major Diameter	0.5289"	Min Pitch Diameter	0.5188"
Max Pitch Diameter	0.5178"	Max Pitch Diameter	0.5230"
Min Pitch Diameter	0.5146"	Min Minor Diameter (and 83.3% of Thread)	0.508"
Max Minor Diameter	0.5069"	Max Minor Diameter (and 64.9% of Thread)	0.514"

RMS Threading: Objective, Scan, and Tube Lenses
External Thread, 0.800"-36.0 UNS-2A		Internal Thread, 0.800"-36.0 UNS-2B
Max Major Diameter	0.7989"	Min Major Diameter	0.8000"
Min Major Diameter	0.7934"	Min Pitch Diameter	0.7820"
Max Pitch Diameter	0.7809"	Max Pitch Diameter	0.7866"
Min Pitch Diameter	0.7774"	Min Minor Diameter (and 83.3% of Thread)	0.770"
Max Minor Diameter	0.7688"	Max Minor Diameter (and 64.9% of Thread)	0.777"

C-Mount Threading: Machine Vision Lenses, CCD/CMOS Cameras
External Thread, 1.000"-32.0 UN-2A		Internal Thread, 1.000"-32.0 UN-2B
Max Major Diameter	0.9989"	Min Major Diameter	1.0000"
Min Major Diameter	0.9929"	Min Pitch Diameter	0.9797"
Max Pitch Diameter	0.9786"	Max Pitch Diameter	0.9846"
Min Pitch Diameter	0.9748"	Min Minor Diameter (and 83.3% of Thread)	0.966"
Max Minor Diameter	0.9651"	Max Minor Diameter (and 64.9% of Thread)	0.974"

SM1 Threading: Ø1" Lens Tubes, 30 mm Cage Systems
External Thread, 1.035"-40.0 UNS-2A		Internal Thread, 1.035"-40.0 UNS-2B
Max Major Diameter	1.0339"	Min Major Diameter	1.0350"
Min Major Diameter	1.0288"	Min Pitch Diameter	1.0188"
Max Pitch Diameter	1.0177"	Max Pitch Diameter	1.0234"
Min Pitch Diameter	1.0142"	Min Minor Diameter (and 83.3% of Thread)	1.008"
Max Minor Diameter	1.0068"	Max Minor Diameter (and 64.9% of Thread)	1.014"

SM30 Threading: Ø30 mm Lens Tubes
External Thread, M30.5 x 0.5 – 6H/6g		Internal Thread, M30.5 x 0.5 – 6H/6g
Max Major Diameter	30.480 mm	Min Major Diameter	30.500 mm
Min Major Diameter	30.371 mm	Min Pitch Diameter	30.175 mm
Max Pitch Diameter	30.155 mm	Max Pitch Diameter	30.302 mm
Min Pitch Diameter	30.059 mm	Min Minor Diameter (and 83.3% of Thread)	29.959 mm
Max Minor Diameter	29.938 mm	Max Minor Diameter (and 64.9% of Thread)	30.094 mm

SM1.5 Threading: Ø1.5" Lens Tubes
External Thread, 1.535"-40 UNS-2A		Internal Thread, 1.535"-40 UNS-2B
Max Major Diameter	1.5339"	Min Major Diameter	1.535"
Min Major Diameter	1.5288"	Min Pitch Diameter	1.5188"
Max Pitch Diameter	1.5177"	Max Pitch Diameter	1.5236"
Min Pitch Diameter	1.5140"	Min Minor Diameter (and 83.3% of Thread)	1.508"
Max Minor Diameter	1.5068"	Max Minor Diameter (and 64.9% of Thread)	1.514"

SM2 Threading: Ø2" Lens Tubes, 60 mm Cage Systems
External Thread, 2.035"-40.0 UNS-2A		Internal Thread, 2.035"-40.0 UNS-2B
Max Major Diameter	2.0338"	Min Major Diameter	2.0350"
Min Major Diameter	2.0287"	Min Pitch Diameter	2.0188"
Max Pitch Diameter	2.0176"	Max Pitch Diameter	2.0239"
Min Pitch Diameter	2.0137"	Min Minor Diameter (and 83.3% of Thread)	2.008"
Max Minor Diameter	2.0067"	Max Minor Diameter (and 64.9% of Thread)	2.014"

SM3 Threading: Ø3" Lens Tubes
External Thread, 3.035"-40.0 UNS-2A		Internal Thread, 3.035"-40.0 UNS-2B
Max Major Diameter	3.0337"	Min Major Diameter	3.0350"
Min Major Diameter	3.0286"	Min Pitch Diameter	3.0188"
Max Pitch Diameter	3.0175"	Max Pitch Diameter	3.0242"
Min Pitch Diameter	3.0133"	Min Minor Diameter (and 83.3% of Thread)	3.008"
Max Minor Diameter	3.0066"	Max Minor Diameter (and 64.9% of Thread)	3.014"

SM4 Threading: Ø4" Lens Tubes
External Thread, 4.035"-40 UNS-2A		Internal Thread, 4.035"-40.0 UNS-2B
Max Major Diameter	4.0337"	Min Major Diameter	4.0350"
Min Major Diameter	4.0286"	Min Pitch Diameter	4.0188"
Max Pitch Diameter	4.0175"	Max Pitch Diameter	4.0245"
Min Pitch Diameter	4.0131"	Min Minor Diameter (and 83.3% of Thread)	4.008"
Max Minor Diameter	4.0066"	Max Minor Diameter (and 64.9% of Thread)	4.014"

Click to Enlarge
Figure 4.2 Old KM100 Packaging

Click to Enlarge
Figure 4.1 New KM100 Packaging

Smart Pack Goals

Reduce Weight of Packaging
Increase Usage of Recyclable Materials
Improve Packing Integrity
Decrease Shipping Costs

Thorlabs' Smart Pack Initiative is aimed at minimizing waste while providing adequate protection for our products. By eliminating any unnecessary packaging, implementing design changes, and utilizing eco-friendly materials, this initiative seeks to reduce the environmental impact of our product packaging.

The new KM100 packing box and envelope are made of compostable, 100% recycled paper products. The transition from plastic bubble wrap to recycled paper results in a 29.33% reduction in the amount of CO₂ produced per kg of packing materials. As we move through our product line, we will indicate re-engineered, eco-friendly packaging with our Smart Pack logo.

Posted Comments:

Sebastian P (posted 2025-05-31 06:51:53.413)

How much weight can be safely mounted on the KM100T without compromising functionality? Is it possible, for example, to mount a beam expander or camera with a weight of ~ 100g using the SM1 thread?

jdelia (posted 2025-06-02 04:17:02.0)

Thank you for contacting Thorlabs. Since our kinematic mirror mounts are typically intended for light loads such as bare optics, we do not specify an official load capacity. That said, we can likely find a feasible solution for you. I have reached out to you directly to discuss your application and its compatibility with our KM100T mount.

Sebastian P (posted 2025-05-28 13:42:13.003)

Is it possible to mount the KM100 directly on an aluminium breadboard with metric M6 taps? Can one use the AE4M6M to achieve this? Will it be stable?

jdelia (posted 2025-05-29 08:36:59.0)

Thank you for contacting Thorlabs. The counterbored holes on the KM100 require an 8-32 or M4 tapped hole to mate with using a cap screw. If you are looking to mount it directly to a surface with M6 tapped holes, then yes, the AE4M6M adapter will allow you to do this by converting the M6 tapped hole into an M4 tapped hole. I have reached out to you directly via email to further discus your application.

mahesh swami (posted 2024-11-19 19:24:04.267)

For KM100 mirror mount how much is the corss-talk between pitch and yaw movements.

EGies (posted 2024-11-20 01:57:11.0)

Thank you for contacting Thorlabs. I have reached out to you directly regarding this. Future requests for additional specs/data can be made by emailing us directly at techsupport@thorlabs.com.

Tobias Ruff (posted 2024-08-24 13:22:42.43)

Dear Ladies and Gentlemen, The KM100 mirror mount I bought with Thorlabs came without a thread as far as I can see. How can I attach it to one of Thorlab's optical posts? Kind regards Tobi

jdelia (posted 2024-08-26 01:12:05.0)

Thank you for contacting Thorlabs. Our KM100 has a #8 (M4) counterbore for mounting to a post using either an 8-32 or M4 cap screw depending on whether your post is imperial or metric.

Marina Servol (posted 2023-09-13 09:48:19.5)

Hello, the KM100 mirror mounts needs a M4 screw to be mounted on posts. Could you give me the threaded length the M4 screw should be (not including the cap part) ? Do you sell these items ? Thanks a lot

jdelia (posted 2023-09-19 01:06:47.0)

Thank you for contacting Thorlabs. The counterbore thickness on the KM100 is 4.32 mm, so the threading on the cap screw you use would just have to be longer than that. Please keep in mind that you would not want the screw to be so long that it uses up the entire thread depth of the post onto which you are mounting it.

Bart Tromp (posted 2023-03-24 22:19:29.733)

For the KM05/M; is the +/- 4deg angular range in optical or mechanical degrees?

jdelia (posted 2023-03-27 04:28:12.0)

Thank you for contacting Thorlabs. The +/- 4 deg angular range for the KM05/M refers to the mechanics adjustment range, not optical.

Ruggero Milazzo (posted 2021-11-04 09:33:53.477)

To whom it may concern, I am interested to KM100CP and I would like to have the possibility to control movements (translation and rotation) in a reproducible way. Is it possible to add one or more micrometer (or a goniometer)? Maybe in the place of the Adjustment Knobs? Thanks

azandani (posted 2021-11-04 04:06:05.0)

Hello Ruggero, thank you for contacting Thorlabs. It is certainly possible to add a micrometer in place of the adjusters used. The KM100CP features 1/4"-80 adjusters that yield +/- 4 degrees of angular adjustment. Because of this threading, the micrometer option will be our DM22 Manual Differential Drive which can be found here: ( https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=1247&pn=DM22 ).

user (posted 2019-09-13 18:58:02.77)

On the KM100CP, it doesn't look like there is enough room to get an 8-32 screw into the mounting hole. Do you remove the face plate to get the screw in?

llamb (posted 2019-09-14 12:44:57.0)

Thank you for contacting Thorlabs. The KM100CP is designed for mounting #8-32 setscrews (included with our optical posts) in through the bottom of the mounting hole. This part is not designed for cap screws. As you have not left a contact email, feel free to reach out to techsupport@thorlabs.com with any other questions.

Yuan Liu (posted 2019-07-25 12:24:34.903)

Dear Thorlabs support, Do you have the temperature stability data for KM100? I am trying to compare KM100 to POLARIS K1T1 (which has temperature data). If no public data is available now. Could you please email me the data. Thanks! Best regards, Yuan

YLohia (posted 2019-07-25 03:30:17.0)

Hello Yuan, thank you for contacting Thorlabs. I have reached out to you directly with this information. Such information can be requested by emailing techsupport@thorlabs.com.

Patrick Lee (posted 2019-03-31 11:55:15.48)

Hi, for KM100, where is axis of rotation/tilt ?

YLohia (posted 2019-04-01 11:52:41.0)

Hello, thank you for contacting Thorlabs. The KM100 rotates about the ball bearing in the corner of the mount with no adjuster. I have reached out to you with a drawing to make this a little clearer.

user (posted 2019-03-22 15:04:06.97)

The description and images for this part indicates the two post mounting holes are tapped/threaded, yet the PDF drawing file indicates that the holes are thru. The KM05T properly indicates that the holes are #8-32 tapped. I anticipated that the holes would be thru (which I can ream out), however, I suggest that you update the drawing text to reflect the fact that the post mounting holes are in fact tapped and not thru.

llamb (posted 2019-03-22 03:37:05.0)

Thank you for your feedback. The PDF drawing for the KM05 calls out an "8-32 MOUNTING HOLE THRU". We intended this to explain that the KM05 features an #8-32 thread (as opposed to a smooth or counterbored hole) that goes through the entire thickness of the back plate, as opposed to a blind thread with a limited thread depth. This has been forwarded to our marketing team for further review to help clarify the product specifications.

werner.engel (posted 2018-11-10 13:09:19.26)

Hallo! Ich bin gerade dabei, für einen Antrag ein optisches Setup zu erstellen. Dabei wäre es extrem gut, nach dem Zeichnen der Anlage, gleich eine Stückliste mit Preisen zu bekommen. Und wenn das Ganze in 3D wäre, könnte ich auch gleich alle optomechanical parts dazu bestellen. Ist schon mal an eine eigene 3D-Software gedacht worden mit der man so ein Experiment zeichnen kann - und auch optisch ansprechend darstellen kann? LG, Werner Engel engel@fotec.at

nreusch (posted 2018-11-21 03:56:52.0)

Thank you very much for your inquiry and your suggestion. Yes, we have already discussed such an option internally. However, there are solutions that already offer this feature: Autodesk Fusion 360 or FreeCAD with a plugin called assembly2. Of course, these possibilities do not offer an order option. German: Vielen Dank für Ihre Anfrage und Ihren Vorschlag. Ja, eine solche Option haben wir intern bereits diskutiert. Es gibt allerdings Lösungen, die diese Funktion bereits bieten: Autodesk Fusion 360 oder FreeCAD mit einem Plugin namens assembly2. Eine Bestelloption bieten diese Möglichkeiten natürlich nicht.

user (posted 2018-05-04 10:38:58.05)

I recently designed a system to use Thorlabs KM05 mounts that my company purchased a few years ago. I just learned that the thickness of the base of these older mounts (0.408") is greater than the thickness listed on the current Thorlabs print for the KM05 (0.31"). However, an even older Thorlabs mount in our possession (a KM05FR) does have the "newer" thinner base thickness (0.31"). Therefore, before I order replacement KM05's to go into my custom hardware, could you please confirm the thickness of the mounting base of the KM05 currently sold by Thorlabs? Again, the old thickness was 0.408", and the new thickness is reported to be 0.31". Thank you.

YLohia (posted 2018-05-04 02:12:30.0)

Hello, thank you for contacting Thorlabs. Yes, to confirm, the current thickness is indeed 0.31".

user (posted 2016-03-01 17:15:43.513)

We wants to think of KM05CP for our application,but what would be max AOI for the mount? We are concerned that beam is clipped by edge of the mount...

besembeson (posted 2016-03-02 03:48:56.0)

Response from Bweh at Thorlabs USA: This should be ~72deg.

rjh1205 (posted 2014-06-05 10:03:00.437)

Hi. I am using KM 100 with mirror now, and I just wonder how much tilted by turning the adjuster. Is there any data about this? Thanks.

besembeson (posted 2014-06-05 06:10:01.0)

A response from Bweh E at Thorlabs Newton-USA: This can be tilted up to +/- 4deg. The resolution is 0.5deg per revolution for the 80 TPI precision adjusters. If you have a special requirement based on your application, let me know and I will look into this for you please.

takeshi.matsuoka1 (posted 2014-01-10 14:06:39.063)

Could you add a vacuum compatible version to your product line? The specification is, 2. made by Al 3. UNANOSDIZED Al 4. no brass 5. All parts is cleaned in acetone with an ultrasonic washing machine before assembling. 6. use vacuum compatible grease

cdaly (posted 2014-01-16 08:04:20.0)

Response from Chris at Thorlabs: Thank you for your inquiry. We will be implementing quite a few vacuum compatible, unanodized parts to our standard catalog offerings int he following months, including a version of the 3 axis kinematic mount KS1 (KS1V). The 2 inch mounts KS2 and KM200 are not among the list of avacuum compatible parts scheduled to be released, but we can still offer a version as a custom. We will contact you directly to discuss this further.

tcohen (posted 2012-04-02 09:59:00.0)

A response from Tim at Thorlabs: We have already generated data on both the KS and the Polaris and there is a clear difference between the two in terms of returning to original position after temperature cycling. You are certainly right that this information will be useful for selecting between our mounts. We are currently working towards accumulating more data and integrating it into our web presentation and we look forward to having this data available for our customers soon!

user (posted 2012-03-31 18:55:40.0)

A response to Tim at Thor Labs- Yes exactly, this is what I was requesting. I don't mind helping you improve your website because it ultimately helps me too and, trust me, there are a lot of other people who would like to have this too. It is much easier to select a mount if all the information is available. Please remember to do both the KS1 and the KM100. If you have more time you might as well do the larger mounts too. PS. I am not a Thor Labs Employee regardless of what everyone is thinking but I do know Alex, John and Brian from the good old days....

tcohen (posted 2012-03-22 09:42:00.0)

Response from Tim at Thorlabs: Thank you for helping us improve our web presentation! We are currently testing the thermal stability of the KM series to help distinguish between our KM and Polaris mounts. We will post an update shortly with the data. In the meantime if you would like to discuss your application or the products in further detail, please feel free to contact us at techsupport@thorlabs.com.

user (posted 2012-03-21 18:27:09.0)

Hello Buki what I was really asking about is if you can post on your website, thermal test data on the KM100 and KS1. it would be helpful for comparing with the steel mount called Polaris.

bdada (posted 2012-03-21 18:38:00.0)

Response from Buki at Thorlabs: Thank you for your feedback. It seems you are comparing the KM series mount to the Polaris. Please use the link below and refer to the "Test Data" tab to see the results of the temperature cycling test. http://thorlabs.com/NewGroupPage9.cfm?ObjectGroup_ID=3912&pn=POLARIS-K05#5462 We would like to discuss your application further so we can ensure you select the appropriate optical mount. Please contact TechSupport@thorlabs.com to continue this discussion.

user (posted 2012-03-21 01:28:57.0)

I like this mount but would like if you could add the thermal test you did on your steel mount so I can compare. It seems as though this mount is just as stable as the steel mount and I can buy 3 for the price of 1 steel mount. Please prove me wrong by showing the test data.

jjurado (posted 2011-05-31 11:27:00.0)

Response from Javier at Thorlabs to sshosseini: Thank you very much for your feedback. We will review the design of our kinematic mirror holders and will keep you updated of any changes.

sshosseini (posted 2011-05-20 17:24:50.0)

Hi, I use the 1" and 2" mirror mounts as lens mounts most times. It is perfect and I can adjust my lenses using the nubs. But since the post holder on the mount is not "exactly" in the center of the opening, i need to combine the a BA1 underneath the post so i can adjust the post just a tiny bet. Again, the difference is a tiny bet but it is important when aligning the lens and It would be helpful if you change the design and have the post screw clearance "exactly" in the center of the opening. ~Sona

paulshamilton (posted 2010-12-10 18:12:55.0)

I agree with Isandstrom - removable knobs on the KM05 would be very useful.

klee (posted 2009-09-29 18:03:44.0)

A response from Ken at Thorlabs to diogenes500: Thank you for your feedback. Your suggestion has been forwarded to our engineering department for consideration.

diogenes500 (posted 2009-09-28 19:06:02.0)

It would be nice if there were markers on the outer edges of the km100 which denoted the middle position of the mirror (horizontal and vertical). When I am measuring with a ruler on an optical table it is difficult to gauge where the mirror center is, and this would help a good deal.

Laurie (posted 2008-04-22 16:46:18.0)

Response from Laurie @ Thorlabs to lsandstrom: After looking into your suggestion a bit further, it would be possible for us to meet your needs through a special request. The KM05 that you inquired about has 3/16"-100 adjusters as does our KMS. Therefore, we could replace the adjusters on our KM05 with the longer adjusters and removable knobs from the KMS. If you would be interested in such an item, please contact our technical support staff at 973-300-3000.

Laurie (posted 2008-04-21 12:00:57.0)

Response from Laurie at Thorlabs to lsandstrom: Thank you for your suggestion concerning removable knobs for our KM05 mounts. I will pass this information on to our mechanics group so that they can consider implementing it in the future. Thanks again for taking the time to provide feedback about how to improve our product line to serve you better.

lsandstrom (posted 2008-04-08 22:27:41.0)

It would appreciate removable similar knobs on the KM05 as on the KM100

solarmayi (posted 2008-02-18 01:58:26.0)

GOOD

TechnicalMarketing (posted 2007-10-15 17:03:44.0)

As requested, some basic information about the mirrors that come premounted in the KM series of kinematic mounts has been added to this page. Look under the "Mirror Info" tab. Also, the tab contains a link to the complete broadband dielectric mirror presentation. Thank you for submitting this excellent suggestion. As always we appreciate any feedback that allows us to improve the usefulness of our presentation. We are currently working on making the presentation feedback form more user friendly, but for now please consider creating another tab in your browser instead of navigating away from the presentation feedback form.

acable (posted 2007-10-12 20:34:23.0)

It really hurts to type in a long reply and then go to check something out only to find the input screen has been wiped clean. 2nd try... Please add reflectivity curves to the presentation and consider adding both a "Mirror Specifications" tab as well as a link to the full presentaion on th mirrors. Also the Related Items tab should show all the other mirror mounts the Thorlabs offers, right i notic that the GM100 and VM1 are missing.

Ø7 mm Mini-Series Kinematic Mirror Mount

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Figure G1.1 PF03-03-P01 Ø7 mm Optic Mounted in an MK7 Kinematic Mirror Mount

Mounts Ø7 mm Optics at Least 0.04" (1.00 mm) Thick
Compact Nominal Footprint: 0.79" x 0.52" (20.0 mm x 13.2 mm)
Angular Range: ±4°
Resolution: 13.4 mrad/rev (0.76°) per Revolution via Two M2.5 x 0.20 Adjusters
Two 4-40 (M3) Threaded Mounting Holes Allow for Left- or Right-Handed Orientation

Thorlabs' MK7(/M) Compact Kinematic Mirror Mount is designed to mount Ø7 mm optics in optomechanical setups where space is a premium. Along with the MK10(/M) and MK05(/M), this two-adjuster mount is one of Thorlabs' smallest kinematic mounts, with a nominal 0.79" x 0.52" (20.0 mm x 13.2 mm) footprint. The mirror is secured at three points using a nylon-tipped locking screw and a double-bored mounting hole. Both the nylon-tipped setscrew and the two M2.5 x 0.20 adjuster screws accept a 0.050" (1.3 mm) hex key, not included. For ease of adjustment, we recommend using the 0.050" hex key thumbscrews sold below. Alternatively, we offer a locking collar and spanner wrench for locking the adjuster screws in a desired position or for creating a hard stop.

The mount features two 4-40 (M3) mounting holes for either left- or right-handed orientation at 90°, enabling it to be mounted onto our Ø6 mm Mini-Series posts. Our Mini-Series post holders allow our Ø6 mm posts to be mounted onto our Mini-Series breadboards.

Ø10 mm Mini-Series Kinematic Mirror Mount

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Figure G2.1 MK10 Mount Back View

Mounts Ø10 mm Optics at Least 0.04" (1.00 mm) Thick
Compact Nominal Footprint: 0.79" x 0.52" (20.0 mm x 13.2 mm)
Angular Range: ±4°
Resolution: 13.4 mrad/rev (0.76°) per Revolution via Two M2.5 x 0.20 Adjusters
Two 4-40 (M3) Threaded Mounting Holes Allow for Left- or Right-Handed Orientation

Thorlabs' MK10(/M) Compact Kinematic Mirror Mount is designed to mount Ø10 mm optics in optomechanical setups where space is a premium. Along with the MK7(/M) and MK05(/M), this two-adjuster mount is one of Thorlabs' smallest kinematic mounts, with a nominal 0.79" x 0.52" (20.0 mm x 13.2 mm) footprint. The mirror is secured at three points using a nylon-tipped locking screw and a double-bored mounting hole. Both the nylon-tipped setscrew and the two M2.5 x 0.20 adjuster screws accept a 0.050" (1.3 mm) hex key, not included. For ease of adjustment, we recommend using the 0.050" hex key thumbscrews sold below. Alternatively, we offer a locking collar and spanner wrench for locking the adjuster screws in a desired position or for creating a hard stop.

Ø1/2" Mini-Series Kinematic Mirror Mount

Ø1/2in Mini-Series Kinematic Mirror Mount

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Figure G3.2 A single F10SC1-5 locking collar can lock an adjuster's position with an SPW403 spanner wrench.

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Figure G3.1 Size Comparison between Our Ø1/2" KM05 (Left) and Ø1/2" MK05 (Right) Kinematic Mirror Mounts

Mounts Ø1/2" Optics at Least 0.12" (3.05 mm) Thick
Compact Nominal Footprint: 0.79" x 0.52" (20.0 mm x 13.2 mm)
Angular Range: ±4°
Resolution: 13.4 mrad/rev (0.76°) per Revolution via Two M2.5 x 0.20 Adjusters
Two 4-40 (M3) Threaded Mounting Holes Allow for Left- or Right-Handed Orientation

Thorlabs' MK05(/M) Mini-Series Kinematic Mirror Mount is designed to mount Ø1/2" and 12.5 mm optics in optomechanical setups where space is a premium. Along with the MK7(/M) and MK10(/M), this two-adjuster mount is one Thorlabs' smallest kinematic mounts, with a nominal 0.79" x 0.52" (20.0 mm x 13.2 mm) footprint. As shown in Figure G3.1, it is significantly more compact than our KM05(/M) Ø1/2" Kinematic Mirror Mount sold below.

The mirror is secured at three points using a nylon-tipped locking screw and a double-bored mounting hole. Both the nylon-tipped setscrew and the two M2.5 x 0.20 adjuster screws accept a 0.050" (1.3 mm) hex key, not included. For ease of adjustment, we recommend using the 0.050" hex key thumbscrews sold below. As shown in Figure G3.2, we also offer a locking collar and spanner wrench for locking the adjuster screws in a desired position or for creating a hard stop.

Ø1/2" Standard Kinematic Mirror Mounts

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Figure G4.2 Rear of KM05 Mount with Gold Mirror on a Ø1/2" Post

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Figure G4.3 The KM05CP mount places the optic's front surface over the center of the post.

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Figure G4.1 The KM05 mount can be motorized with two MPIA10 actuators (each sold separately).

Double-Bored Mounting Cell with Nylon-Tipped Setscrew Secures Ø1/2" Optics at Least 0.07" (1.78 mm) Thick
Two Designs Available:
- KM05(/M) Front-Loaded Mirror Mount
- KM05CP(/M) Rear-Loaded Mirror Mount Aligns Front Surface of Mirror with Post-Mounting Hole to Simplify Beam Alignment
Angular Range: ±4°
Resolution: 13 mrad (0.75°) per Revolution via Two 3/16"-100 Adjusters
Two 8-32 (M4) Threaded Mounting Holes Allow for Left- or Right-Handed Orientation

The KM05(/M) and KM05CP(/M) kinematic mirror mounts are compatible with Ø1/2" optics at least 0.07" (1.78 mm) thick. A nylon-tipped setscrew (replacement Item # SS8N013) secures the mirror along the two lines of contact created by a double bore. The two 3/16"-100 actuators utilize a hex socket to minimize accidental movement in shared facilities, and they can be adjusted using our 5/64" hex key adjusters, sold below. Each mount can be attached to a Ø1/2" post or Ø1" post via one of two 8-32 (M4) threaded mounting holes for either a right- or left-handed adjuster orientation.

Front-Loaded Mount
The standard KM05(/M) Kinematic Mirror Mount has a front-loaded mounting cell in which the distance from the front surface of the optic to the post-mounting hole depends on the thickness of the optic. The KM05(/M) mount puts the center of the mirror 0.58" (14.7 mm) above the post. We also offer the KCP05(/M) centering plate to position the front surface of a 6 mm thick mirror in a KM05 mount over the center of a post.

Rear-Loaded Mount with Post-Centered Front Plate
The KM05CP(/M) Kinematic Mirror Mount is designed to place the front surface of the optic over the center of the mounting post. This design allows for coarse rotational adjustment without beam walk-off by rotating the mounting post. A beam incident at 45° can be easily aligned with a table's hole matrix when this mount is aligned over or mounted directly into a table hole. The KM05CP(/M) mount puts the center of the mirror 0.83" (21.1 mm) above the post due to the design of the post mounting feature.

Ø1/2" SM05-Threaded Kinematic Mount

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Figure G5.1 Rear of KM05T Mount with Dichroic Mirror on a Ø1/2" Post

SM05-Threaded Optic Cell Uses Two Retaining Rings to Secure Ø1/2" Optics up to 0.15" (4 mm) Thick
Angular Range: ±4°
Resolution: 13 mrad (0.75°) per Revolution via Two 3/16"-100 Adjusters
Two 8-32 (M4) Threaded Mounting Holes Allow for Left- or Right-Handed Orientation
Ø1/2" Lens Tube Compatible via SM05 Threading

The KM05T(/M) SM05-Threaded Kinematic Mirror Mount is designed for use with thin Ø1/2" optics up to 0.15" (4 mm) thick. An optic is secured in the mounting hole with the two included SM05RR SM05 (0.535"-40) threaded retaining rings, which can be attached using the SPW603 or SPW603L spanner wrench. This mount is also compatible with SM05-threaded components, including our Ø1/2" lens tubes. The KM05T(/M) mount is post-mountable via one of two 8-32 (M4) threaded mounting holes to allow for left- or right-handed operation. The KMCP(/M) adapter can also be used to center the KM05T(/M) mount over the center of a post.

SM-threaded kinematic mounts are also suitable for mounting cylindrical components such as fiber collimators using adapters.

Ø1" Standard Kinematic Mirror Mounts

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Table G6.1 KM100 Mount & Mirror Kits
Kit Item #	Mirror Item #	Wavelength Range
KM100-E01	BB1-E01	350 - 400 nm
KM100-E02	BB1-E02	400 - 750 nm
KM100-E03	BB1-E03	750 - 1100 nm
KM100-E04	BB1-E04	1280 - 1600 nm

Double-Bored Mounting Cell with Nylon-Tipped Setscrew Secures Ø1" Optics at Least 0.12" (3 mm) Thick
Two Designs Available:
- KM100 Front-Loaded Mirror Mount
- KM100CP(/M) Rear-Loaded Mirror Mount Aligns Front Surface of Mirror with Post-Mounting Hole to Simplify Beam Alignment
Angular Range: ±4°
Resolution: 8 mrad (0.5°) per Revolution via Two 1/4"-80 Adjusters
Two Mounting Holes Allow for Left-Handed or Right-Handed Orientation
- KM100: #8 (M4) Counterbored Holes
- KM100CP(/M): 8-32 (M4) Threaded Holes

The KM100 and KM100CP(/M) kinematic mirror mounts are compatible with Ø1" optics at least 0.12" (3 mm) thick. The KM100 mount is also available with one of four different broadband dielectric mirrors for ease of ordering (see Table G6.1 for details). A nylon-tipped setscrew (replacement Item # SS8N013) secures the mirror along the two lines of contact created by a double bore. The two 1/4"-80 actuators utilize a 5/64" (2.0 mm) hex socket that is accessible with or without knobs removed. An optional accessory, the LN2580 bronze locking nut, is available to lock the adjusters once the desired position is reached.

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Figure G6.5 The KM100CP places the optic's front surface over the center of the post.

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Figure G6.4 KM100 Mount Shown with a PIAK10 Piezo Inertia Actuator

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Figure G6.3 KM100CP Shown with Colored Adjustment Knobs
(Sold Separately)

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Figure G6.2 The actuator knobs are removable.

Front-Loaded Mount
The KM100 is our most popular Ø1" mirror mount. This mount can be attached to a Ø1/2" post or Ø1" post via one of two #8 (M4) counterbores for either a right- or left-handed adjuster orientation. For customer convenience, the KM100 is stocked with one of four different broadband dielectric mirrors (see Table G6.1).

The KM100 mount puts the center of the mirror 1" (25.4 mm) above the post. We also offer the KCP1(/M) centering plate to position the front surface of a 6 mm thick mirror in a KM100 mount over the center of a post.

Rear-Loaded Mount with Post-Centered Front Plate
The KM100CP(/M) mirror mount is designed to place the front surface of a mirror over the center of the mounting post. This design allows for coarse rotational adjustment without beam walk-off by rotating the mounting post. The mount can be attached to either a Ø1/2" post or Ø1" post via one of two 8-32 (M4) taps for either a right- or left-handed adjuster orientation. If the mirror's front surface is aligned over one of the breadboard's holes, a beam incident at 45° can be easily aligned with the table's hole matrix.

The KM100CP(/M) mount puts the center of the mirror 1.25" (31.8 mm) above the post due to the design of the post mounting feature.

Based on your currency / country selection, your order will ship from Newton, New Jersey

+1 Qty Docs Part Number - Imperial Price Available

KM100CP Kinematic Mirror Mount for Ø1" Optics with Post-Centered Front Plate, 8-32 Taps

$89.61

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+1 Qty Docs Part Number - Universal Price Available

KM100 Kinematic Mirror Mount for Ø1" Optics

$44.78

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KM100-E01 Kinematic Mirror Mount for Ø1" Optics with UV Laser Quality Mirror

$189.41

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KM100-E02 Kinematic Mirror Mount for Ø1" Optics with Visible Laser Quality Mirror

$129.50

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KM100-E03 Kinematic Mirror Mount for Ø1" Optics with Near IR Laser Quality Mirror

$129.50

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KM100-E04 Kinematic Mirror Mount for Ø1" Optics with 1.2 to 1.6 µm Laser Quality Mirror

$185.67

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+1 Qty Docs Part Number - Metric Price Available

KM100CP/M Kinematic Mirror Mount for Ø1" Optics with Post-Centered Front Plate, M4 Taps

$89.61

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Ø1" SM1-Threaded Kinematic Mount

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Figure 238C In this image, the KM100T is mounted with one of two back-located #8 (M4) counterbores, which are orthogonal to the optic mounting bore and to each other. Both Figures 238B and 238C show the F280APC-B fiber collimator mounted in the KM100T kinematic mount using an AD11F adapter.

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Figure 238B In this image, the KM100T is mounted upwards using the #8 (M4) counterbore accessed by a through hole in the front plate.

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Figure 238A Mirror Surface Aligned Over the Post Axis Using Our
KMCP Centering Plate

SM1-Threaded Optic Cell Uses Two Retaining Rings to Secure Ø1" Optics up to 0.14" (3.5 mm) Thick
Angular Range: ±4°
Resolution: 8 mrad (0.5°) per Revolution via Two 1/4"-80 Adjusters
Three Counterbored #8 (M4) Through Holes Allow for Left-Handed, Right-Handed, or Upward-Facing Orientation
Ø1" Lens Tube Compatible via SM1 Threading

The KM100T SM1-Threaded Kinematic Mirror Mount is designed for use with thin Ø1" optics up to 0.14" (3.5 mm) thick. An optic is secured in the mounting hole with the two included SM1RR SM1 (1.035"-40) threaded retaining rings, which can be attached using the SPW602 spanner wrench. This mount is also compatible with SM1-threaded components, including our Ø1" lens tubes.

The KM100T mount is compatible with both imperial and metric threaded Ø1/2" mounting posts via #8 (M4) counterbored through holes, and can be attached to the post in a right-handed, left-handed, or upward-facing orientation, as shown in Figures 238A, 238B, and 238C. The two 1/4"-80 actuators utilize a 5/64" (2.0 mm) hex socket that is accessible with or without knobs removed. An optional accessory, the LN2580 bronze locking nut, is available to lock the adjusters once the desired position is reached. The KMCP(/M) adapter can also be used to center the KM100T mount over the center of a post.

SM-threaded kinematic mounts are also suitable for mounting cylindrical components such as fiber collimators using adapters such as the AD11F, as shown in Figures 238B and 238C.

Ø2" Standard Kinematic Mirror Mounts

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Table G8.1 KM200 Mount & Mirror Kits
Kit Item #	Mirror Item #	Wavelength Range
KM200-E02	BB2-E02	400 - 750 nm
KM200-E03	BB2-E03	750 - 1100 nm

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Figure G8.3 Rear of KM200 Shown with a DMLP425L Dichroic Mirror and Colored Adjustment Knobs
(Sold Separately)

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Figure G8.2 The KM200CP places the optic's front surface over the center of the post.

Double-Bored Mounting Cell with Nylon-Tipped Setscrew Secures Ø2" Optics at Least 0.16" (4 mm) Thick
Two Designs Available:
- KM200 Front-Loaded Mirror Mount
- KM200CP(/M) Rear-Loaded Mirror Mount Aligns Front Surface of Mirror with Post-Mounting Hole to Simplify Beam Alignment
Angular Range: ±3°
Resolution: 5 mrad (0.3°) per Revolution via Two 1/4"-80 Adjusters
Two Mounting Holes Allow for Left-Handed or Right-Handed Orientation
- KM200: #8 (M4) Counterbored Holes
- KM200CP(/M): 8-32 (M4) Threaded Holes

The KM200 and KM200CP(/M) kinematic mirror mounts are compatible with Ø2" optics at least 0.16" (4 mm) thick. The KM200 mount is also available with one of two different broadband dielectric mirrors for ease of ordering (see Table G8.1 for details). A nylon-tipped setscrew (replacement Item # SS8N013) secures the mirror along the two lines of contact created by a double bore. The two 1/4"-80 actuators utilize a 5/64" (2.0 mm) hex socket that is accessible with or without knobs removed. An optional accessory, the LN2580 bronze locking nut, is available to lock the adjusters once the desired position is reached.

Front-Loaded Mount
The KM200 is our most popular Ø2" mirror mount. This mount can be attached to a Ø1/2" post or Ø1" post via one of two #8 (M4) counterbores for either a right- or left-handed adjuster orientation. For customer convenience, the KM100 is stocked with one of four different broadband dielectric mirrors (see Table G8.1).

The KM200 mount puts the center of the mirror 1.56" (39.6 mm) above the post. We also offer the KCP2(/M) centering plate to position the front surface of a 12 mm thick mirror in a KM200 mount over the center of a post.

Rear-Loaded Mount with Post-Centered Front Plate
The KM200CP(/M) mirror mount is designed to place the front surface of a mirror over the center of the mounting post. This design allows for coarse rotational adjustment without beam walk-off by rotating the mounting post. The mount can be attached to either a Ø1/2" post or Ø1" post via one of two 8-32 (M4) taps for either a right- or left-handed adjuster orientation. If the mirror's front surface is aligned over one of the breadboard's holes, a beam incident at 45° can be easily aligned with the table's hole matrix.

The KM200CP(/M) mount puts the center of the mirror 1.85" (47.0 mm) above the post due to the design of the post mounting feature.

Ø2" SM2-Threaded Kinematic Mount

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Figure 342B KM200T Shown with a PIAK10 Piezo Inertia Actuator

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Figure 342A KM200T with Dichroic Mirror and Color-Coded Knobs Mounted on a Ø1/2" Post

SM2-Threaded Optic Cell Uses Two Retaining Rings to Secure Ø2" Optics up to 0.10" (2.5 mm) Thick
Angular Range: ±3°
Resolution: 5 mrad (0.3°) per Revolution via Two 1/4"-80 Adjusters
Seven Counterbored #8 (M4) Through Holes Allow for Left-Handed, Right-Handed, or Upward-Facing Orientation
Ø2" Lens Tube Compatible via SM2 Threading

The KM200T SM2-Threaded Kinematic Mirror Mount is designed for use with thin Ø2" optics up to 0.10" (2.5 mm) thick. An optic is secured in the mounting hole with the two included SM2RR SM2 (2.035"-40) threaded retaining rings, which can be attached with the SPW604 spanner wrench. This mount is also compatible with SM2-threaded components, including our Ø2" Lens Tubes.

The KM200T mount is compatible with both imperial and metric threaded Ø1/2" mounting posts via #8 (M4) counterbored through holes, and can be attached to the post in a right-handed, left-handed, or upward-facing orientation. The two 1/4"-80 actuators utilize a 5/64" (2.0 mm) hex socket that is accessible with or without knobs removed. An optional accessory, the LN2580 bronze locking nut, is available to lock the adjusters once the desired position is reached. The KMCP(/M) adapter can also be used to center the KM200T mount over the center of a post.

Hex Key Adjusters

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Figure G10.2 MK05 Mini-Series Kinematic Mirror Mount with HKTS-050 Thumbscrew

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Figure G10.1 POLARIS-K1E2 with HKTS-5/64 Adjuster

For Convenient Adjustment of 0.050" (1.3 mm) or 5/64" (2 mm) Hex-Driven Actuators
Red, Anodized Adjustment Knob with Engraved Hex Size
Replaceable Hex Tip
Sold in Packs of 4

Hex key thumbscrews allow for quick, low-profile adjustment of hex-driven actuators, cap screws, and setscrews. Unlike balldrivers, they can be left in the screw's hex socket between adjustments for convenience.

The HKTS-050 thumbscrew's 0.050" hex is compatible with the MK mini-series mounts sold above, while the HKTS-5/64 thumbscrew's 5/64" hex is compatible with the KM series mounts (with or without the knobs removed). An 8-32 setscrew (5/64" hex) secures the replaceable hex bit, which can be reversed if the tip is stripped. Contact Tech Sales to order replacement hex key bits.

Additional hex key thumbscrews are available in sizes from 1/8" to 3/16" and 2 mm to 5 mm.