Double-Density Aluminum Breadboards with 45° Hole Pattern

Overview
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BB Selection Guide

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The LNR25D stage with 1"-spaced mounting holes can be mounted at 45° to the hole pattern on a standard optical table using the M45B6 breadboard.

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The tapped holes on the M45B4 (M45B1015/M) breadboard are arranged at 45° to the counterbored mounting holes.

Specification	Double-Density Breadboards with 45° Hole Pattern
Threading	Imperial	Metric
Material	Aluminum Plate
Finish	Matte Black Anodized
Breadboard Thickness	0.5"	12.7 mm
Flatness	±0.006" over 1 ft²	±0.15 mm over 0.09 m²
Hole Size and Spacing	1/4"-20 Tapped Holes on 1" Centers	M6 Tapped Holes on 25 mm Centers
Hole Pattern Alignment	45° Relative to Breadboard Edges and Counterbores
Number of Counterbored Holes	Four 1/4" Located at Corners, Inset 1"	Four M6 Located at Corners, Inset 25 mm

Features

Breadboards with Double-Density Hole Pattern at 45° to Traditional Breadboards
Mounting Counterbores Line Up with Standard 1" (25 mm) Hole Spacing
Imperial and Metric Breadboard Hole Patterns
Black Anodized Surface with Low Reflectance
Custom Breadboards Available; Contact Tech Support for Details

These breadboards feature a tapped hole pattern aligned at 45° compared to traditional aluminum breadboards. The 45° hole matrix is laid out as a double-density matrix with the tapped holes on 1" (25 mm) centers, allowing optomechanical components and bases with standard 1" mounting hole spacing to be mounted to these breadboards as shown in the image to the far right.

Each breadboard features four counterbored mounting holes aligned with the standard 1" (25 mm) spacing on traditional optical tables and breadboards. The mounting holes are located at each corner of the breadboard, inset 1" from each edge (25 mm on metric). These counterbored mounting holes may be used to attach the breadboards to variety of surfaces and mounts, including optical tables, other breadboards, mounting posts, and brackets.

The chamfered corners serve to visually distinguish these breadboards from traditional breadboards. These 1/2" (12.7 mm) thick breadboards are finished with a black, minimally reflective anodized coating, and the holes aligned at 45° are threaded completely through, allowing components to be mounted on both sides at once.

Custom Breadboards
We offer a service for custom breadboard orders, with options that include hole pattern and spacing, size, thickness, and anodizing. For a quote, please contact Tech Support.

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Breadboards	Nexus, Optimized Damping	Intrinsically Damped	Aluminum Honeycomb	Stainless Steel	Solid Aluminum	Optically Clear Acrylic
Construction
Breadboard Thickness	60 mm (2.4") 110 mm (4.3")	58 mm (2.28")	25 mm (0.98") 55 mm (2.2")	12.7 mm (0.5")	7.0 mm (0.28") 9.5 mm (0.375") 12.7 mm (0.5") 19.05 mm (0.75")	12.7 mm (0.5")
Working Surface	430 Grade Stainless Steel or 304L Grade Nonmagnetic Steel Top Plate	430 Grade Stainless Steel Top Plate	Aluminum	416 Grade Stainless Steel	Solid Aluminum Anodized or Unanodized	Acrylic
Top Skin	5 mm (0.20")	5 mm (0.20")	6 mm (0.24")	N/A	N/A	N/A
Bottom Skin	5 mm (0.20")	3 mm (0.12")	3 mm (0.12")	N/A	N/A	N/A
Core Design	High-Density Plated Steel Honeycomb, 0.26 mm Thick		High-Density Plated Aluminum Honeycomb	N/A	N/A	N/A
Side Panels	Rigid Steel Box Section	Unplasticized Polyvinyl Chloride (uPVC)	Black Laminated Aluminum Sides	N/A	N/A	N/A
Ferromagnetism	Magnetic or Non-Magnetic Options	Magnetic	Non-Magnetic	Magnetic	Non-Magnetic
Sealed Holes	Sealed (25 mm Depth) or Non-Sealed Options	Non-Sealed		N/A	N/A	N/A
Thread Options	1/4"-20 (M6) Tapped Holes	1/4"-20 (M6) Tapped Holes		1/4"-20 (M6) Tapped Holes	1/4"-20 (M6), 4-40 (M3), or 8-32 (M3) and 1/4"-20 (M6) Tapped Holes	1/4"-20 Tapped Holes
Spacing	1" (25 mm) Centers	1" (25 mm) Centers		1" (25 mm) Centers	1" (25 mm) Centers or 0.5" (12.7 mm) Centers	0.5" (12.7 mm) Centers
Distance from Edge to First Holes	0.5" (12.5 mm) on all Sides		0.5" (12.5 mm) or 1.0" (25 mm) on all Sides	0.5" (12.5 mm) on all Sides	0.5" (12.5 mm) on all Sides	1.0" (25.4 mm) on all Sides
Performance^a
Damping				N/A	N/A	N/A
Stiffness	60 mm (2.4") Thick	58 mm (2.28") Thick	25 mm (0.98") Thick	12.7 mm (0.5") Thick	7.0 mm (0.28") Thick	12.7 mm (0.5") Thick
Stiffness	110 mm (4.3") Thick	58 mm (2.28") Thick	55 mm (2.2") Thick	12.7 mm (0.5") Thick	19.05 mm (0.75") Thick	12.7 mm (0.5") Thick

The damping and stiffness performance shown here is qualitative and does not relate to exact specifications of each breadboard.

Optical Breadboard Selection Guides

The selection guides below list every size offered for our honeycomb, solid aluminum, and acrylic breadboards. Simply locate the specific width and length needed and then select the type of breadboard. Expand each table by clicking the More [+] button within the header.

Thorlabs also offers several unique breadboard solutions. For applications requiring temperature control, we offer anodized aluminum water cooled breadboards in several sizes, in addition to a temperature-controlled mini-series breadboard for small-scale operations. Our anodized aluminum large-area translation stages and rotating breadboards offer hand-operated positioning control, while our manual and motorized translating mounting platforms are ideal for use in microscopy applications.

Imperial Optical Breadboard Size Options
Width	Length	Honeycomb					Stainless Steel	Solid Aluminum^a			Acrylic, Transparent
Width	Length	Nexus (60 mm Thick)^b	Nexus (110 mm Thick)^b	Intrinsically Damped (58 mm Thick)	Aluminum (25 mm Thick)	Aluminum (55 mm Thick)	Stainless Steel	Standard	Double Density	High Density	Acrylic, Transparent

Solid aluminum breadboards are offered with four different thicknesses: 0.5" (item # prefix MB), 0.75" (item # prefix MBH), 3/8" (item # prefix MS), or 0.28" (item # prefix MS). Select sizes are also available in hard-coat anodized aluminum (item # CMMP1818) or without an anodized coating (item #s ending with U).
Item Number Suffix:

F, A, B, or G: Non-Sealed Mounting Holes
T, L, U, or N: Sealed Mounting Holes
FN or AN: Nonmagnetic Mounting Holes
Y or Z: No Mounting Holes
S: Stainless Steel

Tapped Hole Pattern Aligned at 45°
Build-to-Order
Includes a T-Slot in Side Panels for Compatibility with 25 mm Rail Accessories
This product has an access aperture.

Metric Optical Breadboard Size Options
Width	Length	Honeycomb					Stainless Steel	Solid Aluminum^a
Width	Length	Nexus (60 mm Thick)^b	Nexus (110 mm Thick)^b	Intrinsically Damped (58 mm Thick)	Aluminum (25 mm Thick)	Aluminum (55 mm Thick)	Stainless Steel	Standard	Double Density	High Density

50 mm	75 mm	-	-	-	-	-	-	-	-	MSB5075/M
75 mm	100 mm	-	-	-	-	-	-	-	-	MSB7510/M
75 mm	150 mm	-	-	-	-	-	-	-	-	MSB7515/M
100 mm	100 mm	-	-	-	-	-	MB10S/M	-	-	-
100 mm	150 mm	-	-	-	-	-	MB1015S/M	MB1015/M MB1015U/M	M45B1015/M^c	MSB1015/M
100 mm	300 mm	-	-	-	-	-	-	MB1030/M	-	-
100 mm	600 mm	-	-	-	-	-	-	-	MB1060/M	-
100 mm	900 mm	-	-	-	-	-	-	-	MB1090/M	-
Ø149 mm		-	-	-	-	-	-	-	MBR150U/M	-
Ø150 mm		-	-	-	-	-	-	-	MBR150/M	-
150 mm	150 mm	-	-	-	-	-	MB15S/M	MB1515/M MB1515U/M	M45B1515/M^c	MSB15/M
150 mm	300 mm	-	-	-	-	-	-	MB1530F/M	MB1530/M M45B1530/M^c	-
150 mm	450 mm	-	-	-	-	-	-	MB1545/M	-	-
150 mm	600 mm	-	-	-	-	-	-	MB1560/M	-	-
150 mm	900 mm	-	-	-	-	-	-	MB1590/M	-	-
150 mm	1200 mm	-	-	-	-	-	-	MB15120/M	-	-
180 mm	230 mm	-	-	-	-	-	-	-	-	MSB1823/M MSBU1823/M
200 mm	200 mm	-	-	-	-	-	-	MB2020/M MB2020U/M	-	-
200 mm	250 mm	-	-	-	-	-	-	MB2025/M	-	-
200 mm	600 mm	-	-	-	-	-	-	-	MB2060/M	-
200 mm	900 mm	-	-	-	-	-	-	-	MB2090/M	-
250 mm	300 mm	-	-	-	-	-	-	MB2530/M MB2530U/M	-	-
Ø300 mm		-	-	-	-	-	-	-	MBR300/M MBR300U/M	-
300 mm	300 mm	B3030A^d B3030L^d	-	-	PBG3030A^e	-	-	MB3030/M MB3030U/M	MB3030D/M	MS12B/M MSB30/M
300 mm	450 mm	B3045A^d B3045L^d	-	B3045AX	PBG3045A^e	-	-	MB3045/M MB3045A/M^f MB3045U/M	-	MSB3045/M
300 mm	600 mm	B3060A^d B3060L	-	B3060AX^d	PBG3060A	PBG52502^d	-	MB3060/M MB3060U/M	-	-
300 mm	900 mm	B3090A^d B3090L^d	-	-	PBG3090A^e	PBG52503^d	-	MB3090/M	-	-
300 mm	1200 mm	-	-	-	-	-	-	MB30120/M	-	-
350 mm	1150 mm	-	-	-	-	-	-	MB35115/M	-	-
350 mm	1425 mm	-	-	-	-	-	-	MB35142/M	-	-
450 mm	450 mm	B4545A^d B4545L^d	-	-	PBG4545A	-	-	MB4545/M	-	-
450 mm	600 mm	B4560A^d B4560L^d	-	B4560AX^d	PBG4560A^e	PBG52522^d	-	MB4560/M MB4560A/M^f MB4560U/M	-	-
450 mm	750 mm	-	-	-	-	-	-	MB4575/M	-	-
450 mm	900 mm	-	-	-	-	-	-	MB4590/M	-	-
600 mm	600 mm	B6060A^d B6060L	-	B6060AX^d	PBG6060A^e	PBG52505^d	-	MB6060/M	-
600 mm	900 mm	B6090A B6090L B6090AN^d B6090Z	B6090B^d B6090N^d	B6090AX	PBG6090A^e	PBG52506^d	-	MB6090/M	-	-
600 mm	1200 mm	B60120A B60120L	B60120B^d B60120N^d	B60120AX	PBG60120A^e	-	-	MB60120/M	-	-
600 mm	1500 mm	-	B60150B^d B60150N^d	-	-	PBG52508^d	-	-	-	-
750 mm	750 mm	B7575A B7575L	-	-	-	-	-	MB7575/M	-	-
750 mm	900 mm	B7590A B7590L B7590AN^d B7590Z	B7590B^d B7590N^d	B7590AX	PBG7590A^e	PBG52510^d	-	-	-	-
750 mm	1200 mm	B75120A B75120L B75120AN^d B75120Z	B75120B B75120N^d	B75120AX	PBG75120A^e	PBG52511	-	-	-	-
750 mm	1500 mm	-	B75150B B75150N	B75150AX	-	-	-	-	-	-
900 mm	900 mm	B9090A B9090L	B9090B^d B9090N^d	-	-	-	-	-	-	-
900 mm	1200 mm	B90120A B90120L B90120AN B90120Z	B90120B B90120N	B90120AX	PBG90120A^e	PBG52513	-	-	-	-
900 mm	1500 mm	-	B90150B B90150N	B90150AX	-	PBG52514	-	-	-	-
900 mm	1800 mm	-	B90180B B90180N	B90180AX	-	-	-	-	-	-
1200 mm	1500 mm	-	B120150B^d B120150N^d	-	-	-	-	-	-	-
1200 mm	1800 mm	-	B120180B B120180N^d	-	-	-	-	-	-	-
1250 mm	1800 mm	-	-	-	-	PBG52521	-	-	-	-

Solid aluminum breadboards are offered with four different thicknesses: 12.7 mm (item # prefix MB), 19.05 mm (item # prefix MBH), 9.5 mm (item # prefix MS), or 7.0 mm (item # prefix MS). Select sizes are also available without an anodized coating (item #s ending with U).
Item Number Suffix:

F, A, B, or G: Non-Sealed Mounting Holes
T, L, U, or N: Sealed Mounting Holes
FN or AN: Nonmagnetic Mounting Holes
Y or Z: No Mounting Holes
S: Stainless Steel

Tapped Hole Pattern Aligned at 45°
Build-to-Order
Includes a T-Slot in Side Panels for Compatibility with 25 mm Rail Accessories
This product has an access aperture.

View All »Matching Part Numbers

Double-Density Aluminum Breadboards with 45° Hole Pattern

Features

Optical Breadboard Selection Guides

Double-Density Aluminum Breadboards with 45° Hole Pattern, Imperial

Double-Density Aluminum Breadboards with 45° Hole Pattern, Metric