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Optomechanics Multipacks


  • Multipacks of Many of Our Most Popular Optomechanical Assembly Parts
  • Simplify Ordering and Reduce Packaging Waste
  • Imperial and Metric Options Available

TR3-P5

Pack of 5 Ø1/2" Posts

PH3-P5

Pack of 5 Ø1/2" Post Holders

SWC-P5

Pack of 5
Rotating Clamps

ER3-P4

Pack of 4 Cage Assembly Rods

BA1-P5

Pack of 5 Mounting Bases

CF125-P5

Pack of 5 Clamping Forks

SM1L20-P5

Pack of 5 Lens Tubes

Related Items


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Features

  • Ø1/2" Posts and Construction Accessories, SM1 Lens Tubes, and Fixed Optic Mounts Available in Packs of 5
  • Cage Assembly Rods Available in Packs of 4
  • Packs of SM-Threaded Retaining Rings
  • Packs of Post-Mountable and Unmounted Iris Diaphragms
  • Packs Reduce Packaging Waste and Simplify Ordering
  • Ideal for Starting a New Lab or Restocking

Thorlabs offers a variety of multipacks of different optomechanical parts for ordering convenience. Many of our most popular parts, including Ø1/2" posts, Ø1/2" post holders, and angle clamps, are available in packs of five. Packs minimize packaging waste, making orders more sustainable and reducing unpacking time. To jump to information about specific packs, please click on any of the images in the Quick Links table below.


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Ø1/2"  and Ø12.0 mm Stainless Steel Optical Post Packs

Optical Post Mounts
Click to Enlarge

Each Post Features a
Ø1/8" (Ø3.2 mm) Hole
for Extra Leverage
During Tightening
  • Both Imperial and Metric Posts Available
  • Packs of Posts Come in Lengths of 0.75" to 6.0" (20 mm to 150 mm) 
  • Each Pack Includes Five Posts

Thorlabs’ Ø1/2" and Ø12.7 mm Optical Posts are a basic building block required in most rigid constructions. For convenience, Ø1/2" and Ø12.7 mm posts of varying lengths are available here in packs of 5. These precision-ground stainless steel posts are fabricated from 303 stainless steel and are compatible with our Ø1/2" post holders, which are also available in packs of 5.

All the posts on this page feature a bottom-located 1/4"-20 (M6) tapped hole and top-located 8-32 (M4) removable setscrew, providing compatibility with virtually all of our optic mounts. The 8-32 (M4) tapped hole provides additional flexibility by allowing
8-32 (M4) cap screws to be used with our universal mounts. Each post also features an Ø1/8" (Ø3.2 mm) hole for slipping a balldriver through the post for extra leverage when tightening components, as shown to the right.

Thorlabs also offers a line of Ø12.0 mm posts which are compatible with standard Japanese post holders and optomechanical components. Like the metric versions, these posts also feature an M4-threaded hole with removable setscrew on top and an M6-threaded tapped hole on the bottom, as well as an Ø1/8" (Ø3.2 mm) hole for tightening. In addition, these posts are compatible with our line of Ø1/2" post holders.

For other post options, or to order individual posts, please visit our Ø1/2" optical posts page.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
TR075-P5 Support Documentation
TR075-P5Ø1/2" Optical Post, SS, 8-32 Setscrew, 1/4"-20 Tap, L = 0.75", 5 Pack
$21.33
Today
TR1-P5 Support Documentation
TR1-P5Ø1/2" Optical Post, SS, 8-32 Setscrew, 1/4"-20 Tap, L = 1", 5 Pack
$21.33
Today
TR1.5-P5 Support Documentation
TR1.5-P5Ø1/2" Optical Post, SS, 8-32 Setscrew, 1/4"-20 Tap, L = 1.5", 5 Pack
$22.37
Today
TR2-P5 Support Documentation
TR2-P5Ø1/2" Optical Post, SS, 8-32 Setscrew, 1/4"-20 Tap, L = 2", 5 Pack
$23.36
Today
TR3-P5 Support Documentation
TR3-P5Ø1/2" Optical Post, SS, 8-32 Setscrew, 1/4"-20 Tap, L = 3", 5 Pack
$24.39
Today
TR4-P5 Support Documentation
TR4-P5Ø1/2" Optical Post, SS, 8-32 Setscrew, 1/4"-20 Tap, L = 4", 5 Pack
$26.42
Today
TR6-P5 Support Documentation
TR6-P5Ø1/2" Optical Post, SS, 8-32 Setscrew, 1/4"-20 Tap, L = 6", 5 Pack
$32.01
Today
+1 Qty Docs Part Number - Metric Price Available
TR20/M-P5 Support Documentation
TR20/M-P5Ø12.7 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 20 mm, 5 Pack
$21.33
Today
TR30/M-P5 Support Documentation
TR30/M-P5Ø12.7 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 30 mm, 5 Pack
$21.33
Today
TR40/M-P5 Support Documentation
TR40/M-P5Ø12.7 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 40 mm, 5 Pack
$22.37
Today
TR50/M-P5 Support Documentation
TR50/M-P5Ø12.7 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 50 mm, 5 Pack
$23.36
Today
TR75/M-P5 Support Documentation
TR75/M-P5Ø12.7 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 75 mm, 5 Pack
$24.39
Today
TR100/M-P5 Support Documentation
TR100/M-P5Ø12.7 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 100 mm, 5 Pack
$26.42
Today
TR150/M-P5 Support Documentation
TR150/M-P5Ø12.7 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 150 mm, 5 Pack
$32.01
Today
+1 Qty Docs Part Number - Japanese Price Available
TR100/M-JP-P5 Support Documentation
TR100/M-JP-P5Ø12 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 100 mm, 5 Pack
$26.42
Today
TR20/M-JP-P5 Support Documentation
TR20/M-JP-P5Ø12 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 20 mm, 5 Pack
$21.33
Today
TR30/M-JP-P5 Support Documentation
TR30/M-JP-P5Ø12 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 30 mm, 5 Pack
$21.33
Today
TR40/M-JP-P5 Support Documentation
TR40/M-JP-P5Ø12 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 40 mm, 5 Pack
$22.37
Today
TR50/M-JP-P5 Support Documentation
TR50/M-JP-P5Ø12 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 50 mm, 5 Pack
$23.36
Today
TR75/M-JP-P5 Support Documentation
TR75/M-JP-P5Ø12 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 75 mm, 5 Pack
$24.39
Today

Standard Ø1/2" Post Holder Packs

TS25 Spring Loaded Thumbscrew
Click to Enlarge

Each Post Holder Includes a Spring-Loaded Thumbscrew that Holds Posts in Place Before Tightening
  • 1/4"-20 (M6) Tapped Hole on Bottom
  • Aluminum, Spring-Loaded, Hex-Locking Thumbscrew (3/16" or 5 mm) for Positioning Ease
  • Each Pack Includes Five Post Holders

These Standard Post Holders are designed with wide, square relief cuts that provide two lines of contact for highly stable post mounting. For convenience in ordering, post holders are available here in packs of 5. A spring-loaded plunger within each aluminum thumbscrew holds a steel post firmly within the post holder prior to final tightening. This design allows one-handed positioning of post-mounted devices. Thorlabs' imperial and metric post holders are equipped with our 3/16" (TS25H) and 5 mm (TS6H/M) spring-loaded hex-locking thumbscrews, respectively. The post holders are compatible with our entire line of Ø1/2" optical posts and mounting bases, which are both also available in packs of 5.

To order individual post holders, or for more options, including other post holder lengths, please see our Ø1/2" post holders page.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
PH1-P5 Support Documentation
PH1-P5Ø1/2" Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L = 1", 5 Pack
$35.15
Today
PH1.5-P5 Support Documentation
PH1.5-P5Ø1/2" Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L=1.5", 5 Pack
$36.10
Today
PH2-P5 Support Documentation
PH2-P5Ø1/2" Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L = 2", 5 Pack
$38.50
Today
PH3-P5 Support Documentation
PH3-P5Ø1/2" Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L = 3", 5 Pack
$41.35
Today
PH4-P5 Support Documentation
PH4-P5Ø1/2" Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L = 4", 5 Pack
$45.85
Today
+1 Qty Docs Part Number - Metric Price Available
PH20/M-P5 Support Documentation
PH20/M-P5Ø12.7 mm Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L=20 mm, 5 Pack
$35.15
Today
PH30/M-P5 Support Documentation
PH30/M-P5Ø12.7 mm Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L=30 mm, 5 Pack
$35.15
Today
PH40/M-P5 Support Documentation
PH40/M-P5Ø12.7 mm Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L=40 mm, 5 Pack
$36.10
Today
PH75/M-P5 Support Documentation
PH75/M-P5Ø12.7 mm Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L=75 mm, 5 Pack
$41.35
Today
PH100/M-P5 Support Documentation
PH100/M-P5Ø12.7 mm Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L=100 mm, 5 Pack
$45.85
Today

Swivel Base Adapter

  • Convert Your Existing Post Holders into Universal Post Holder Style Mounts
  • 360° Swiveling Base Fastens to Existing Ø1/2" Post Holders via a 1/4"-20 (M6) Cap Screw
  • Magnets in Base Hold Position of Components on Breadboard During Initial Setup
  • Each Pack Includes Five Adapters

Our 360° swivel base adapter fits standard Ø1/2" post holders (sold above) with 1/4"-20 (M6) mounting holes and minimizes the amount of time it takes to assemble an optical system. In addition, the swivel design is ideal for applications that require a large number of components to be packed into a small area. When our Ø1/2" post holders are used with this adapter, the combination is nearly that of our very popular Universal Post Holders (common sizes also available below). This anodized aluminum adapter has the benefit of compatibility with any of our existing Ø1/2" post holders but does not offer the same height flexibility of the swiveling post holders, which allow the post to be lowered all the way to the table.

To order individual swivel base adapters, please visit our Ø1/2" post holders page.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
UPHA-P5 Support Documentation
UPHA-P5Swivel Base Adapter, 5 Pack
$104.53
Today

Swiveling Magnetic Base Ø1/2" Post Holders

UPH Drawing
  • Base Swivels 360° for Mounting Convenience
  • Post can Pass Through Base, Enabling Minimum Beam Height
  • Magnets in Base Provide Holding Force Prior to Fastening to an Optical Table
  • Spring-Loaded Hex Locking Thumbscrews for Positioning Ease
  • Each Pack Includes Five Post Holders

Our line of Universal Post Holders offers several convenient features that make it easy to construct a new assembly. The swiveling base allows you to place your optic mount at the desired location and then simply swivel the base until it lines up with a convenient mounting hole on the optical table. Additionally, the post holder base is equipped with magnets that provide holding force for rough optic alignment prior to final lockdown. For additional height adjustment, the hollow base allows a Ø1/2" Post to rest upon the optical table, allowing the largest range of height adjustment of the post. These post holders are equipped with a TS25H(/M) 3/16" (5 mm) drive spring-loaded hex locking thumbscrew.

To order individual post holders, or for more options, including other post holder lengths, please see our Ø1/2" universal post holders page. To order these post holders without magnets, please contact Tech Support.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
UPH1-P5 Support Documentation
UPH1-P5Ø1/2" Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 1", 5 Pack
$152.34
Today
UPH1.5-P5 Support Documentation
UPH1.5-P5Ø1/2" Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 1.5", 5 Pack
$154.96
Today
UPH2-P5 Support Documentation
UPH2-P5Ø1/2" Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 2", 5 Pack
$156.54
Today
UPH3-P5 Support Documentation
UPH3-P5Ø1/2" Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 3", 5 Pack
$160.74
Today
+1 Qty Docs Part Number - Metric Price Available
UPH30/M-P5 Support Documentation
UPH30/M-P5Ø12.7 mm Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 30 mm, 5 Pack
$152.34
Today
UPH40/M-P5 Support Documentation
UPH40/M-P5Ø12.7 mm Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 40 mm, 5 Pack
$154.96
Today
UPH50/M-P5 Support Documentation
UPH50/M-P5Ø12.7 mm Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 50 mm, 5 Pack
$156.54
Today
UPH75/M-P5 Support Documentation
UPH75/M-P5Ø12.7 mm Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 75 mm, 5 Pack
$160.74
Today

Slip-On Post Collars


Click to Enlarge

A vertical setscrew allows for fine adjustment of the post height.
  • 0.44" (11.2 mm) Thick
  • Includes Vertically Aligned 4-40 Setscrew
  • Each Pack Includes Five Post Collars

The R2(/M) Slip-On Collar locks onto a Ø1/2" post with a thumbscrew. By positioning the collar on a post so that it rests on the top of the post holder, the post can be rotated without altering the height of the mounted component. In addition, the R2 is equipped with a 4-40 setscrew. By using a 0.050" (1.3 mm) hex key, this adjustment screw allows for approximately 0.25" (6.4 mm) of post height adjustment (see photo to the right) without the need for a translating post or post holder. To restrict the rotation of the post, the R2 can be paired with the TRK05 anti-rotation adapter. 

To order individual post collars, see our alignment stops page.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
R2-P5 Support Documentation
R2-P5Customer Inspired! Slip-On Post Collar for Ø1/2" Posts, 1/4"-20 Thumbscrew, 5 Pack
$25.00
Today
+1 Qty Docs Part Number - Metric Price Available
R2/M-P5 Support Documentation
R2/M-P5Customer Inspired! Slip-On Post Collar for Ø1/2" Posts, M6 Thumbscrew, 5 Pack
$25.00
Today

Thin Slip-On Post Collar


Click to Enlarge

Turning the 8-32 brass-tipped screw locks the RT2 collar onto a post. 

Click to Enlarge

The R2T collar marks the vertical position of a post inside a post holder.
  • 0.23" (5.7 mm) Thick
  • Thin Design Enables Easy Incorporation in Tightly Spaced Setups
  • Sold in Packs of Five

The R2T is a thinner version of the R2 Post Collar featured above and can be secured to a Ø1/2" post by turning the included 8-32 brass-tipped locking screw. By placing the collar on a post so that it rests on the top of the post holder, the post can be rotated or removed and replaced without altering the height of the mounted component. At a thickness of only 0.23", the R2T collar occupies minimal space on the post and allows any mounted component to be positioned vertically close to the post holder.

To restrict the rotation of the post, the R2T can be paired with the TRK05 anti-rotation adapter. Alternatively, each R2T has a small groove, shown in the photo to the left, that allows it to be used as an extra post collar in setups using the RMC Position-Maintaining Post Collar (available below).

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
R2T Support Documentation
R2TThin Slip-On Post Collar for Ø1/2" Posts, 5 Pack
$37.56
Today

Ø1/2" Post Spacers


Click to Enlarge

TR4M Post Spacer Underneath a TR3 Post with a KM100 Mirror Mount.
The 1/4"-20 setscrew is threaded directly into the optical table.
  • Available in 1 mm Increments from 1 mm to 10 mm
  • 1/4" (M6) Clearance Hole
  • Thickness Tolerance of ±0.001"
  • Each Pack Includes Five Post Spacers

These stainless steel post spacers, also known as shims, are designed for achieving intermediate heights of our TR series Ø1/2" posts without compromising structural rigidity. They have a diameter of 0.50" (12.7 mm) to fit underneath the Ø1/2" posts sold above. The center clearance hole allows 1/4"-20 (M6) setscrews to pass through to the mating tap of the components on either side of the spacer.

By adding a Ø1/2" post spacer to a TR series post, it is easy to adjust the height of the center of optical components. An optic mounted in our LMR1(/M) or FMP1(/M) mount has its center at a height of 0.87" (22.1 mm) above the top of the post. Placing a TR3M post spacer under the post brings the optical axis height to 0.99" (25.1 mm).

Setscrews are not included with these post spacers. 1/4"-20 and M6 setscrews are available here.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
TR1M Support Documentation
TR1MØ1/2" Post Spacer, 1 mm Thick, Qty. 5
$17.23
Today
TR2M Support Documentation
TR2MØ1/2" Post Spacer, 2 mm Thick, Qty. 5
$17.23
Today
TR3M Support Documentation
TR3MØ1/2" Post Spacer, 3 mm Thick, Qty. 5
$17.23
Today
TR4M Support Documentation
TR4MØ1/2" Post Spacer, 4 mm Thick, Qty. 5
$19.33
Today
TR5M Support Documentation
TR5MØ1/2" Post Spacer, 5 mm Thick, Qty. 5
$19.86
Today
TR6M Support Documentation
TR6MØ1/2" Post Spacer, 6 mm Thick, Qty. 5
$20.17
Today
TR7M Support Documentation
TR7MØ1/2" Post Spacer, 7 mm Thick, Qty. 5
$21.22
Today
TR8M Support Documentation
TR8MØ1/2" Post Spacer, 8 mm Thick, Qty. 5
$21.22
Today
TR9M Support Documentation
TR9MØ1/2" Post Spacer, 9 mm Thick, Qty. 5
$22.59
Today
TR10M Support Documentation
TR10MØ1/2" Post Spacer, 10 mm Thick, Qty. 5
$22.59
Today

Ø1/2" Post Angle Clamp Packs

Click Image to Enlarge RA45(/M) RA90(/M) RA180(/M) SWC(/M)
Item # RA45(/M)-P5 RA90(/M)-P5 RA180(/M)-P5 SWC(/M)-P5
Clamp Angle 45° 90° 90° Continuous 360°
  • Rigid Construction Accessories Required for Many Complex 3D Assemblies
  • Double-Bored Through Holes for Stable Two-Line Contact
  • Aluminum Thumbscrew Provides Secure Holding Force for Locking
  • Each Pack Includes Five Angle Clamps

Thorlabs' Angle Clamps securely fasten our Ø1/2" posts at a variety of angles. In addition to fixed 45° and 90° options, we also offer the SWC-P5, a variant for 360° continuous adjustment. All of our angle clamps are available here in packs of 5 for ease of ordering.

The holes of these clamps are double-bored to provide two lines of stable contact. The RA180(/M)-P5 clamps have one double-bored hole and a 1/4"-20 (M6) threaded stud on the bottom of each clamp, which allows them to be directly threaded onto a post. The 3/16" (5 mm) hex thumbscrews located at either side of the clamps secure the Ø1/2" posts in place once the desired position is achieved. 

For more angle options, or to order individual angle clamps, please see our Ø1/2" construction accessories page.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
RA45-P5 Support Documentation
RA45-P5Right-Handed 45° Angle Clamp for Ø1/2" Posts, 3/16" Hex, 5 Pack
$62.50
Today
RA90-P5 Support Documentation
RA90-P5Right-Angle Clamp for Ø1/2" Posts, 3/16" Hex, 5 Pack
$48.80
Today
RA180-P5 Support Documentation
RA180-P5Right-Angle Post Clamp for Ø1/2" Posts, 1/4"-20 Stud and 3/16" Hex, 5 Pack
$55.65
Today
SWC-P5 Support Documentation
SWC-P5Rotating Clamp for Ø1/2" Posts, 360° Continuously Adjustable, 3/16" Hex, 5 Pack
$121.34
Today
+1 Qty Docs Part Number - Metric Price Available
RA45/M-P5 Support Documentation
RA45/M-P5Right-Handed 45° Angle Clamp for Ø1/2" Posts, 5 mm Hex, 5 Pack
$62.50
Today
RA90/M-P5 Support Documentation
RA90/M-P5Right-Angle Clamp for Ø1/2" Posts, 5 mm Hex, 5 Pack
$48.80
Today
RA180/M-P5 Support Documentation
RA180/M-P5Right-Angle End Clamp for Ø1/2" Posts, M6 Stud and 5 mm Hex, 5 Pack
$55.65
Today
SWC/M-P5 Support Documentation
SWC/M-P5Rotating Clamp for Ø1/2" Posts, 360° Continuously Adjustable, 5 mm Hex, 5 Pack
$121.34
Today

SM1 Lens Tube Packs

SM1Lxx Lens Tube Diagram
  • Stackable Design Enables Multi-Element Optical Systems
  • SM1-Threaded (1.035"-40) Bore Accepts Ø1" (Ø25.4 mm) Optics
  • Compatible with Our 30 mm Cage Systems
  • Each Pack Includes Five Lens Tubes and Five Retaining Rings

These stackable Ø1" lens tubes provide a fast and easy means for building compact optical assemblies. Their stackable design and direct interfacing with any SM1-threaded (1.035"-40) components provide flexibility for complex optomechanical assemblies. Each 5-pack includes one retaining ring per lens tube for a total of five rings.

Item # L1 L2 Thread Depth
SM1L03-P5 0.45" (11.4 mm) 0.12" (3.0 mm) 0.30" (7.6 mm)
SM1L05-P5 0.65" (16.5 mm) 0.50" (12.7 mm)
SM1L10-P5 1.15" (29.2 mm) 1.00" (25.4 mm)
SM1L20-P5 2.15" (54.6 mm) 2.00" (50.8 mm)

Alternatives Individual Ø1" Lens Tubes Ø1/2", Ø30 mm, Ø2", and Ø3" Lens Tubes
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
SM1L03-P5 Support Documentation
SM1L03-P5SM1 Lens Tube, 0.30" Thread Depth, SM1RR Retaining Ring, 5 Pack
$57.75
Today
SM1L05-P5 Support Documentation
SM1L05-P5SM1 Lens Tube, 0.50" Thread Depth, SM1RR Retaining Ring, 5 Pack
$59.80
Today
SM1L10-P5 Support Documentation
SM1L10-P5SM1 Lens Tube, 1.00" Thread Depth, SM1RR Retaining Ring, 5 Pack
$67.70
Today
SM1L20-P5 Support Documentation
SM1L20-P5SM1 Lens Tube, 2.00" Thread Depth, SM1RR Retaining Ring, 5 Pack
$78.40
Today

Base Adapter Pack for Ø1/2" Post Holders and Ø1" Posts

PH2 on a BE1 Base
Click to Enlarge
View Imperial Product List
Item #QtyDescription
Imperial Product List
CF1251Clamping Fork, 1.24" Counterbored Slot, Universal
BE11Ø1.25" Studded Pedestal Base Adapter, 1/4"-20 Thread
PH21Ø1/2" Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L = 2"
TR1.51Ø1/2" Optical Post, SS, 8-32 Setscrew, 1/4"-20 Tap, L = 1.5"
LMR11Lens Mount with Retaining Ring for Ø1" Optics, 8-32 Tap
SH25S05011/4"-20 Stainless Steel Cap Screw, 1/2" Long, Pack of 25
W25S05011/4" Washer, M6 Compatible, Stainless Steel, Pack of 100
View Metric Product List
Item #QtyDescription
Metric Product List
CF1251Clamping Fork, 1.24" Counterbored Slot, Universal
BE1/M1Ø31.8 mm Studded Pedestal Base Adapter, M6 Thread
PH50/M1Ø12.7 mm Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L=50 mm
TR40/M1Ø12.7 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 40 mm
LMR1/M1Lens Mount with Retaining Ring for Ø1" Optics, M4 Tap
SH6MS121M6 x 1.0 Stainless Steel Cap Screw, 12 mm Long, Pack of 25
W25S05011/4" Washer, M6 Compatible, Stainless Steel, Pack of 100
A CF125 fork is used to secure a Ø1/2" post holder to an optical table with a BE1 base.
BE1 Includes a Hex Key for Mounting
Click to Enlarge
These base adapters feature a 1/8" (3 mm) hex socket on the bottom for tightening.

The BE1(/M) pedestal base adapter features 1/4"-20 (M6)-threaded studs that fit into the bottom of our standard Ø1/2" post holders or Ø1" post extensions (see photos to the right), converting them into pedestal-style mounts for added stability. Made from solid 303 stainless steel with a 1.25" (31.8 mm) outer diameter, these adapters allow Ø1/2" post holders and Ø1" pillar posts to be used with the CF series of clamping forks, and can be tightened onto the post or post holder using a 1/8" (3 mm) hex.

Alternatively, Thorlabs offers pedestal pillar posts that do not require a BE1(/M) base adapter. We also offer the BE1R(/M) magnetic base adapters (sold individually), which provide additional stability during alignment for temporary setups.

To order an base adapter, or for more options, please see our base adapters page.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
BE1-P5 Support Documentation
BE1-P5Customer Inspired! Ø1.25" Studded Pedestal Base Adapter, 1/4"-20 Thread, 5 Pack
$48.85
Today
+1 Qty Docs Part Number - Metric Price Available
BE1/M-P5 Support Documentation
BE1/M-P5Customer Inspired! Ø31.8 mm Studded Pedestal Base Adapter, M6 Thread, 5 Pack
$48.85
Today

Clamping Fork Packs

Optical Post Mounts
Click to Enlarge

Bottom View of the Captive Screw
Held in Place by the Retainer

Click to Enlarge

 Available with Three Slot Lengths
  • Secure Pedestal-Style Mount to a Breadboard or Optical Table
  • Forks Swivel 360° to Select Most Convenient Mounting Hole
  • Each Pack Includes Five Clamping Forks

These Clamping Fork Packs are designed to provide exceptional clamping force when used with our Ø1/2" post holders and Ø1" post extensions that have been adapted using the BE1(/M) to pedestal-style mounts. These clamping fork packs can also be used with our pedestal-style Ø1" posts and pedestal-style Ø1/2" post holders without any need for the BE1(/M). Each pack include 5 forks for ordering convenience.

Fabricated from solid 303 stainless steel, all of these clamping forks create three points of contact with the table for high stability. For flexibility in the positioning of post assemblies, the CF038-P5 and CF038C(/M)-P5 forks offer 0.38" (9.5 mm) long counterbored slots, the CF125-P5 and CF125C(/M)-P5 forks offer 1.24" (31.5 mm) long counterbored slots, and the CF175-P5 and CF175C(/M)-P5 fork packs have 1.76" (44.8 mm) long counterbored slots. The counterbored slots on the CF038-P5, CF125-P5, and CF175-P5 forks are designed for user-supplied 1/4"-20 (M6)-threaded cap screws. The CF038C(/M)-P5, CF125C(/M)-P5, and CF175C(/M)-P5 each include 1/4"-20 (M6)-threaded captive screws which are pre-installed on each fork. Please note that significant over tightening of clamping forks can deform the surface of an optical table, which can cause misalignment of components and decrease stability.

To order individual clamping forks, or for more options, please visit our base adapters and clamping forks page.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
CF038C-P5 Support Documentation
CF038C-P5Clamping Fork, 0.38" Counterbored Slot, 1/4"-20 Captive Screw, 5 Pack
$49.65
Today
CF125C-P5 Support Documentation
CF125C-P5Clamping Fork, 1.24" Counterbored Slot, 1/4"-20 Captive Screw, 5 Pack
$54.03
Today
CF175C-P5 Support Documentation
CF175C-P5Clamping Fork, 1.76" Counterbored Slot, 1/4"-20 Captive Screw, 5 Pack
$59.30
Today
+1 Qty Docs Part Number - Universal Price Available
CF038-P5 Support Documentation
CF038-P5Customer Inspired! Clamping Fork, 0.38" Counterbored Slot, Universal, 5 Pack
$40.19
Today
CF125-P5 Support Documentation
CF125-P5Clamping Fork, 1.24" Counterbored Slot, Universal, 5 Pack
$42.45
Today
CF175-P5 Support Documentation
CF175-P5Clamping Fork, 1.76" Counterbored Slot, Universal, 5 Pack
$50.38
Today
+1 Qty Docs Part Number - Metric Price Available
CF038C/M-P5 Support Documentation
CF038C/M-P5Clamping Fork, 9.5 mm Counterbored Slot, M6 x 1.0 Captive Screw, 5 Pack
$49.65
Today
CF125C/M-P5 Support Documentation
CF125C/M-P5Clamping Fork, 31.5 mm Counterbored Slot, M6 x 1.0 Captive Screw, 5 Pack
$54.03
Today
CF175C/M-P5 Support Documentation
CF175C/M-P5Clamping Fork, 44.8 mm Counterbored Slot, M6 x 1.0 Captive Screw, 5 Pack
$59.30
Today

Table Clamp Packs

CL5A Clamping a Base
Click for Details

CL5A Clamp Holding Down a BA2S6 0.5" Thick Base
CL2 Clamping a Spacer
Click for Details

CL2 Clamp Holding BA2S7 Spacer on Table
  • Secure Optomechanical Assemblies to Optical Tables and Breadboards
  • Solid One-Piece Construction
  • Each Pack Includes Five Clamps

Thorlabs' Table Clamps are useful when constructing optomechanical assemblies. Their ability to adapt complex, unforgiving layouts to any mounting hole pattern saves time and headaches, significantly reducing setup times. The design of our clamps makes each one suitable for securing bases and other optomechanical components using 1/4"-20 (M6) cap screws and washers, which are available as part of our Screw Kits. For ordering convenience, the CL5, CL5A, CL2(/M), and CL3(/M), are available here in packs of 5.

The CL5-P5 and CL5A-P5 clamps have a simple L-shape design for use with a wide variety of optomechanical components. Each clamp only requires one 1/4"-20 (M6) cap screw to use. The CL5 can be used to secure components up to 0.50" thick. The additional rounded lip of the CL5A-P5 clamps maintains contact with the top surface of the optomechanic when the clamp is used at higher angles, making it compatible with components up to 0.80" thick.

Both the CL2(/M)-P5, our heavy-duty option, and the CL3(/M)-P5, our more compact version, require two 1/4"-20 (M6) cap screws for each clamp, as seen in the image above. Both of these options feature variable height that depends on the length of the cap screws used. The CL2(/M)-P5 is 1" (25.4 mm) longer than the CL3(/M)-P5, providing maximum torque on the contact surface. The CL3(/M)-P5, on the other hand, is smaller, and significantly reduces footprint on the work surface.

To order an individual clamp, or for more options, please see our table clamps page.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
CL2-P5 Support Documentation
CL2-P5Heavy-Duty Variable Height Clamp, 1/4"-20 Tapped, 5 Pack
$35.99
5-8 Days
CL3-P5 Support Documentation
CL3-P5Compact Variable Height Clamp, 1/4"-20 Tapped, 5 Pack
$26.50
Today
+1 Qty Docs Part Number - Universal Price Available
CL5-P5 Support Documentation
CL5-P5Table Clamp, L-Shape, 5 Pack
$21.24
Today
CL5A-P5 Support Documentation
CL5A-P5Table Clamp, L-Shape, Rounded Lip, 5 Pack
$19.77
Today
+1 Qty Docs Part Number - Metric Price Available
CL2/M-P5 Support Documentation
CL2/M-P5Heavy-Duty Variable Height Clamp, M6 Tapped, 5 Pack
$35.99
Today
CL3/M-P5 Support Documentation
CL3/M-P5Compact Variable Height Clamp, M6 Tapped, 5 Pack
$26.50
Today

Mounting Base Packs

Click Image
to Enlarge
BA1S BA1 BA2
Item # BA1S(/M)-P5 BA1(/M)-P5 BA2(/M)-P5
Slots 1 2 2
Slot Length 1.10" (27.9 mm) 0.81" (20.1 mm) 1.25" (31.8 mm)
Dimensions
(W x L x H)
1" x 2.3" x 3/8"
(25 x 58 x 10 mm)
1" x 3" x 3/8"
(25 x 75 x 10 mm)
2" x 3" x 3/8"
(50 x 75 x 10 mm)
  • Compatible with Imperial and Metric Breadboards, Posts, and Post Holders
  • Fabricated from Black Anodized Aluminum with Bottom Relief Cuts for Stable Mounting
  • Each Pack Includes Five Bases

Thorlabs offers a variety of anodized aluminum bases to best utilize space on an optical breadboard. Our most popular bases, the BA1S(/M), BA1(/M), and BA2(/M), are available here in 5 packs.

For close positioning of components, our BA1S(/M)-P5 bases feature the smallest footprint. For increased stability while maintaining a small footprint, the two-slotted BA1(/M)-P5 is a good option. For the greatest stability, consider our BA2(/M)-P5 bases, which offer a larger contact area.

Please note that a 3/8" long, 1/4"-20 (10 mm long M6) cap screw is recommended for attaching post holders to each of our standard mounting bases.

To order an individual base, or for other mounting base options, please see our post holder bases page

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
BA1S-P5 Support Documentation
BA1S-P5Mounting Base, 1" x 2.3" x 3/8", 5 Pack
$23.40
Today
BA1-P5 Support Documentation
BA1-P5Mounting Base, 1" x 3" x 3/8", 5 Pack
$25.20
Today
BA2-P5 Support Documentation
BA2-P5Mounting Base, 2" x 3" x 3/8", 5 Pack
$32.85
Today
+1 Qty Docs Part Number - Metric Price Available
BA1S/M-P5 Support Documentation
BA1S/M-P5Mounting Base, 25 mm x 58 mm x 10 mm, 5 Pack
$23.40
Today
BA1/M-P5 Support Documentation
BA1/M-P5Mounting Base, 25 mm x 75 mm x 10 mm, 5 Pack
$25.20
Today
BA2/M-P5 Support Documentation
BA2/M-P5Mounting Base, 50 mm x 75 mm x 10 mm, 5 Pack
$32.85
Today

16 mm Cage System Construction Packs

  • For Use with our 16 mm Compact Cage Systems
  • Ø4 mm Precision-Ground Stainless Steel Rods
  • Cage Rod Adapters Allow Components to be Easily Added or Removed from Cage Assemblies
  • Each Pack Includes Four Items

For ordering convenience, many of our Stainless Steel Compact Cage Components are available in packs of 4. These 16 mm cage rods are made from stainless steel and are designed for use with our Compact Series Components. The 4-40 threaded setscrew at each end of the cage rod can be removed, leaving a 4-40 tapped hole. This allows multiple cage rods to be connected end-to-end.

To order individual assembly rods, or for more length options, please see our 16 mm cage system construction rods pageReplacement Setscrews can also be purchased in packs of 50.

The SRSCA is a stud adapter that will allow any cage assembly to be easily separated when adding or removing components. This adapter has an internal bore on one end that accepts a Ø4 mm SR series rod with its setscrew removed. The mounting stud collar must be tightened using the locking setscrew with a 5/64" (2 mm) hex key to hold the SR rod in place. On the other side of the adapter, there is an externally 4-40 threaded stud that can be threaded into the end of another SR series rod or 4-40 internally threaded cage component.

As seen in the images below, the SRSCA is particularly useful for connecting two internally 4-40 threaded cage system components with Ø4 mm SR series cage rods.

View Imperial Product List
Item #QtyDescription
SC6W116 mm Cage Cube
SRSCA-P41Rod Adapter for Ø4 mm SR Rods, 4 Pack
SR3-P42Mini Series Cage Assembly Rod, 3" Long, Ø4 mm, 4 Pack
KCB051Right-Angle Kinematic Mirror Mount, 16 mm Cage System and SM05 Compatible, 4-40 and 8-32 Mounting Holes
|
View Metric Product List
Item #QtyDescription
SC6W116 mm Cage Cube
SRSCA-P41Rod Adapter for Ø4 mm SR Rods, 4 Pack
SR3-P42Mini Series Cage Assembly Rod, 3" Long, Ø4 mm, 4 Pack
KCB05/M1Right-Angle Kinematic Mirror Mount, 16 mm Cage System and SM05 Compatible, M3 and M4 Mounting Holes

Thread the SR series cage rods directly into the KCB05 16 mm Right-Angle Kinematic Cage Mount as shown above. Then thread four SRSCA adapters into the SC6W Compact 6-Way Cage Cube. Finally, insert the Ø4 mm SR series rods into the internal bores on the SRSCA adapters and secure using the 2-56 locking setscrews.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
SR05-P4 Support Documentation
SR05-P4Compact Cage Assembly Rod, 1/2" Long, Ø4 mm, 4 Pack
$23.16
Today
SR1-P4 Support Documentation
SR1-P4Compact Cage Assembly Rod, 1" Long, Ø4 mm, 4 Pack
$25.35
Today
SR1.5-P4 Support Documentation
SR1.5-P4Compact Cage Assembly Rod, 1.5" Long, Ø4 mm, 4 Pack
$27.35
Today
SR2-P4 Support Documentation
SR2-P4Compact Cage Assembly Rod, 2" Long, Ø4 mm, 4 Pack
$29.55
Today
SR3-P4 Support Documentation
SR3-P4Compact Cage Assembly Rod, 3" Long, Ø4 mm, 4 Pack
$31.54
Today
SR4-P4 Support Documentation
SR4-P4Compact Cage Assembly Rod, 4" Long, Ø4 mm, 4 Pack
$33.73
Today
SRSCA-P4 Support Documentation
SRSCA-P4Customer Inspired! Rod Adapter for Ø4 mm SR Rods, 4 Pack
$59.26
Today

30 and 60 mm Cage System Construction Packs

ERSCA 1D Construction
Click to Enlarge
View Imperial Product List
Item #QtyDescription
Imperial Product List
ERSCA-P41Rod Adapter for Ø6 mm ER Rods, 4 Pack
ST1XY-A1XY Translator with 100 TPI Drives
ER6-P42Cage Assembly Rod, 6" Long, Ø6 mm, 4 Pack
View Metric Product List
Item #QtyDescription
Metric Product List
ERSCA-P41Rod Adapter for Ø6 mm ER Rods, 4 Pack
ST1XY-A/M1XY Translator with 100 TPI Drives, Metric
ER6-P42Cage Assembly Rod, 6" Long, Ø6 mm, 4 Pack
ST1XY-A translator with ERSCA adapters installed. This allows the translator to be mounted to other cage components with internal 4-40 threads.
  • For Use with Our Standard 30 mm Cage Systems and 60 mm Cage Systems
  • Ø6 mm Precision-Ground Stainless Steel Assembly Rods with Removable Setscrew at Both Ends
  • Cage Rod Adapters Allow Components to be Easily Added or Removed from Cage Assemblies
  • Each Pack Includes Four Items

For ordering convenience, many of our Stainless Steel Cage Assembly Rods are available in packs of 4. These rods are most commonly used as precision guides for our cage assembly plates and are available with a Ø6 mm diameter for 30 mm or 60 mm cage systems. The 4-40 threaded setscrew at each end of the cage rod can be removed, leaving a 4-40 tapped hole. This allows multiple cage rods to be connected end-to-end.

To order individual assembly rods, or for more length options, please see our cage system construction rods page

Our ERSCA Adapters enable any cage assembly to be easily separated when adding or removing components. This adapter has an internal bore on one end that accepts a Ø6 mm ER series rod with its setscrew removed. The 4-40 locking setscrew with a 0.05" (1.3 mm) hex must be tightened to hold the ER rod in place. On the other side of the adapter, there is an externally 4-40 threaded stud that can be threaded into the end of another ER series rod or 4-40 internally-threaded cage component.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
ER05-P4 Support Documentation
ER05-P4Cage Assembly Rod, 1/2" Long, Ø6 mm, 4 Pack
$19.19
Today
ER1-P4 Support Documentation
ER1-P4Cage Assembly Rod, 1" Long, Ø6 mm, 4 Pack
$19.19
Today
ER1.5-P4 Support Documentation
ER1.5-P4Cage Assembly Rod, 1.5" Long, Ø6 mm, 4 Pack
$22.22
Today
ER2-P4 Support Documentation
ER2-P4Cage Assembly Rod, 2" Long, Ø6 mm, 4 Pack
$23.18
Today
ER3-P4 Support Documentation
ER3-P4Cage Assembly Rod, 3" Long, Ø6 mm, 4 Pack
$25.08
Today
ER4-P4 Support Documentation
ER4-P4Cage Assembly Rod, 4" Long, Ø6 mm, 4 Pack
$26.98
Today
ER6-P4 Support Documentation
ER6-P4Cage Assembly Rod, 6" Long, Ø6 mm, 4 Pack
$32.87
Today
ER8-P4 Support Documentation
ER8-P4Cage Assembly Rod, 8" Long, Ø6 mm, 4 Pack
$44.46
Today
ERSCA-P4 Support Documentation
ERSCA-P4Rod Adapter for Ø6 mm ER Rods, 4 Pack
$44.31
Today

Fixed SM-Threaded Lens Mount Packs

  • SM Threaded Mounts for Ø1/2", Ø1", and Ø2" Optics
  • Each Mount Includes an 8-32 (M4) Tapped Hole for Post Mounting
  • Each Pack Includes Five Mounts and Five Compatible Retaining Rings

Traditional fixed optic mounts are available in 5 packs for optic diameters of Ø1/2", Ø1", and Ø2". Each mount in the pack features internal SM threading, and comes complete with one retaining ring per mount for securing the optic in place. Externally threaded lens tubes are available and allow for multi-element optic systems to be attached directly to each fixed lens mount. Each fixed mount features an 8-32 (M4) tapped hole for post mounting. 

For small optics (i.e., less than Ø10 mm), we offer stainless steel adapters that allow these optics to be mounted in our SM05-threaded LMR05(/M) mounts. We also offer a line of small optic adapters with external SM1 threading, which can mount optics from Ø5 mm to Ø20 mm in SM1-threaded LMR1(/M) lens mounts.

To order individual optic mounts, or for more options, including mounts for other optic diameters, please see our fixed lens mount page

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
LMR05-P5 Support Documentation
LMR05-P5Lens Mount with Retaining Ring for Ø1/2" Optics, 8-32 Tap, 5 Pack
$74.62
Today
LMR1-P5 Support Documentation
LMR1-P5Lens Mount with Retaining Ring for Ø1" Optics, 8-32 Tap, 5 Pack
$72.30
Today
LMR2-P5 Support Documentation
LMR2-P5Lens Mount with Retaining Ring for Ø2" Optics, 8-32 Tap, 5 Pack
$125.98
Today
+1 Qty Docs Part Number - Metric Price Available
LMR05/M-P5 Support Documentation
LMR05/M-P5Lens Mount with Retaining Ring for Ø1/2" Optics, M4 Tap, 5 Pack
$74.62
Today
LMR1/M-P5 Support Documentation
LMR1/M-P5Lens Mount with Retaining Ring for Ø1" Optics, M4 Tap, 5 Pack
$72.30
Today
LMR2/M-P5 Support Documentation
LMR2/M-P5Lens Mount with Retaining Ring for Ø2" Optics, M4 Tap, 5 Pack
$125.98
Today

Fixed Optical Mount Packs

Item # Minimum Optic Thickness
FMP05(/M)-P5 0.147" (3.73 mm)
FMP1(/M)-P5 0.147" (3.73 mm)
FMP2(/M)-P5 0.227" (5.76 mm)
  • Accommodates Ø1/2" (Ø12.5 mm), Ø1" (Ø25.0 mm), or Ø2" (Ø50.8 mm) Optics
  • Post-Mountable via 8-32 (M4) Tapped Hole
  • Double Bored for Stable Contact
  • 8-32 (M4) Nylon-Tipped Locking Screw
  • Each Pack Contains Five Optic Mounts

Thorlabs' line of Fixed Optical Mounts, available here in packs of 5, hold Ø1/2" (Ø12.5 mm), Ø1" (Ø25.0 mm), or Ø2" (Ø50.8 mm) optics. Each mount features 8-32 (M4) tapped holes at the base, which allow them to be directly attached to our Ø1/2 posts. The double-bored design of the optic cavity provides two stable lines of contact, holding the optic securely in place via a top-located 8-32 (M4) nylon-tipped setscrew. The rear of the optic rests against a small shoulder, which leads to a clear aperture that is nearly as large as the optic itself.

To order individual mounts, please visit our Fixed Optical Mounts page

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
FMP05-P5 Support Documentation
FMP05-P5Fixed Ø1/2" Mirror Mount, 8-32 Tap, 5 Pack
$66.21
Today
FMP1-P5 Support Documentation
FMP1-P5Fixed Ø1" Mirror Mount, 8-32 Tap, 5 Pack
$76.61
Today
FMP2-P5 Support Documentation
FMP2-P5Fixed Ø2" Mirror Mount, 8-32 Tap, 5 Pack
$101.93
Today
+1 Qty Docs Part Number - Metric Price Available
FMP05/M-P5 Support Documentation
FMP05/M-P5Fixed Ø1/2" Mirror Mount, M4 Tap, 5 Pack
$66.21
Today
FMP1/M-P5 Support Documentation
FMP1/M-P5Fixed Ø1" Mirror Mount, M4 Tap, 5 Pack
$76.61
Today
FMP2/M-P5 Support Documentation
FMP2/M-P5Fixed Ø2" Mirror Mount, M4 Tap, 5 Pack
$101.93
Today

Retaining Ring Packs

  • Standard SM-Threaded Aluminum Retaining Rings
  • Compatible with SM-Threaded Optic Mounts and Lens Tubes
  • Maximizes Clear Aperture While Providing Uniform Force

Three of our most popular SM-Threaded Retaining Rings are available in multipacks. The SM05-threaded (0.535"-40) SM05RR retaining ring and SM1-threaded (1.035"-40) SM1RR retaining ring are both available in packs of 10, while the SM2-threaded (2.035"-40) SM2RR retaining ring is available in packs of 5. Each ring is made from black-anodized aluminum and is machined with two slots for compatibility with our selection of spanner wrenches.

Thorlabs also offers a line of compatible spanner wrenches and spanner bits for SM05, SM1, and SM2 retaining rings. 

To order individual retaining rings, or for stress-free, stainless steel, and plastic ring options, see our retaining rings page.

Item # Thread Thickness Thread Specs Compatible Spanner Wrench Compatible Optic Mounts Number of Rings Included
SM05RR-P10 SM05 (0.535"-40) 0.07" (1.7 mm) info SPW603 or SPW801 All Internally SM05-Threaded Mounts 10
SM1RR-P10 SM1 (1.035"-40) 0.08" (2.0 mm) info SPW606, SPW602, or SPW801 All Internally SM1-Threaded Mounts 10
SM2RR-P5 SM2 (2.035"-40) 0.10" (2.5 mm) info SPW604 or SPW801 All Internally SM2-Threaded Mounts 5
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
SM05RR-P10 Support Documentation
SM05RR-P10SM05 Retaining Ring for Ø1/2" Lens Tubes and Mounts, 10 Pack
$36.00
Today
SM1RR-P10 Support Documentation
SM1RR-P10SM1 Retaining Ring for Ø1" Lens Tubes and Mounts, 10 Pack
$40.50
Today
SM2RR-P5 Support Documentation
SM2RR-P5SM2 Retaining Ring for Ø2" Lens Tubes and Mounts, 5 Pack
$31.05
Today

Iris Diaphragm Packs

Item # Aperturea O.D. / Thickness
D8S-P5b Ø0.7 - Ø8 mm 0.58" / 0.18" (14.8 mm / 4.5 mm)
D12S-P5b Ø0.8 - Ø12 mm 0.78" / 0.20" (19.8 mm / 5.0 mm)
IDA12-P5 (IDA12/M-P5)c Ø0.8 - Ø12 mm 1.04" / 0.23" (26.4 mm / 5.8 mm)
D15S-P5b Ø0.8 - Ø15 mm 0.95" / 0.20" (24.0 mm / 5.0 mm)
IDA15-P5 (IDA15/M-P5)c Ø0.8 - Ø15 mm 1.20" / 0.26" (30.6 mm / 6.5 mm)
D20S-P5b Ø0.8 - Ø20 mm 1.18" / 0.22" (30.0 mm / 5.5 mm)
IDA20-P5 (IDA20/M-P5)c Ø0.8 - Ø20 mm 1.44" / 0.28" (36.6 mm / 7.2 mm)
IDA25-P5 (IDA25/M-P5)c Ø1 - Ø25 mm 1.72" / 0.26" (43.7 mm / 6.6 mm)
  • Aperture Tolerance is ±0.13 mm (±0.005")
  • These irises are unmounted and do not have mounting holes.
  • These irises are mounted in an aluminum housing and include a bottom-located 8-32 (M4) setscrew for post mounting.
  • Lever-Actuated, Continuously Variable Iris
  • Black Spring Steel Leaves
  • Maximum Apertures Ranging from Ø8 mm to Ø25 mm
  • DxS Irises: Unmounted (No Mounting Holes)
  • IDAx Irises: Bottom-Located 8-32 (M4) Setscrew for Post Mounting
  • Each Pack Contains Five Irises

These lever-actuated, continuously variable iris diaphragms are designed to provide smooth operation over many thousands of cycles. The individual steel leaves pivot within a black-anodized aluminum housing. Maximum Aperture sizes range from Ø8 mm to Ø25 mm. Irises are available either unmounted (without mounting holes) or within a black-anodized aluminum housing with a bottom-located 8-32 (M4) setscrew for post mounting. 

To order individual iris diaphragms, see our post-mountable and unmounted iris diaphragms.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available
IDA12-P5 Support Documentation
IDA12-P5Post-Mountable Standard Iris, Ø12.0 mm Max Aperture, 8-32 Threaded Stud, Pack of 5
$217.47
Today
IDA15-P5 Support Documentation
IDA15-P5Post-Mountable Standard Iris, Ø15.0 mm Max Aperture, 8-32 Threaded Stud, Pack of 5
$216.42
Today
IDA20-P5 Support Documentation
IDA20-P5Post-Mountable Standard Iris, Ø20.0 mm Max Aperture, 8-32 Threaded Stud, Pack of 5
$223.78
Today
IDA25-P5 Support Documentation
IDA25-P5Post-Mountable Standard Iris, Ø25.0 mm Max Aperture, 8-32 Threaded Stud, Pack of 5
$265.80
Today
+1 Qty Docs Part Number - Universal Price Available
D8S-P5 Support Documentation
D8S-P5Standard Iris, Ø8.0 mm Max Aperture, Pack of 5
$212.75
Today
D12S-P5 Support Documentation
D12S-P5Standard Iris, Ø12.0 mm Max Aperture, Pack of 5
$200.93
Today
D15S-P5 Support Documentation
D15S-P5Standard Iris, Ø15.0 mm Max Aperture, Pack of 5
$210.10
Today
D20S-P5 Support Documentation
D20S-P5Standard Iris, Ø20.0 mm Max Aperture, Pack of 5
$229.82
Today
+1 Qty Docs Part Number - Metric Price Available
IDA12/M-P5 Support Documentation
IDA12/M-P5Post-Mountable Standard Iris, Ø12.0 mm Max Aperture, M4 Threaded Stud, Pack of 5
$217.47
Today
IDA15/M-P5 Support Documentation
IDA15/M-P5Post-Mountable Standard Iris, Ø15.0 mm Max Aperture, M4 Threaded Stud, Pack of 5
$216.42
Today
IDA20/M-P5 Support Documentation
IDA20/M-P5Post-Mountable Standard Iris, Ø20.0 mm Max Aperture, M4 Threaded Stud, Pack of 5
$223.78
Today
IDA25/M-P5 Support Documentation
IDA25/M-P5Post-Mountable Standard Iris, Ø25.0 mm Max Aperture, M4 Threaded Stud, Pack of 5
$265.80
Today
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