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Solid Aluminum Optical Breadboards

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Solid Aluminum Optical Breadboards

SpecificationImperial BoardsMetric Boards
MaterialSolid T6061
Aluminum Alloy
5083 Aluminum Tooling Plate
FinishMatte Black Anodized
Breadboard Thickness0.5"12.7 mm
Flatness±0.006" over 1 ft2±0.15 mm over 0.3 m2
Coating Thickness0.00015" - 0.00020"15 μm (Min)
Hole Size and Spacing1/4"-20 Tapped Holes on 1" CentersM6 Tapped Holes on 25 mm Centers
Distance from Edge
to First Hole
0.5" on All Sides12.5 mm on All Sides
Number of Counterbored HolesaFour 1/4"-20 located at corners - inset 1"Four M6 located at corners - inset 25 mm
  • 5th counterbored mounting hole placed at the center of larger imperial and metric boards (MB1218 through MB2448, MB1560/M through MB1520/M, and MB3045/M through MB60120/M)
Anodized Optical Breadboard
Click to Enlarge
A Fifth Mounting Hole in the Middle of the Breadboard Increases Rigidity and Reduces Stress When Mounting Heavy Loads


  • Low Reflection Anodized Surface
  • Standard Imperial and Metric Breadboard Hole Patterns
  • Offset Mounting Holes Allow a Full, Uninterrupted, Threaded Hole Matrix
  • Larger Breadboards Have a Fifth Center-Located Counterbore Mounting Hole (imperial: MB1218 through MB2448; metric: MB1560/M through MB15120/M, and MB3045/M through MB60120/M)
  • Double-Hole Density Versions and Custom Sizes Available
  • Metric Boards Stocked in Europe for Quick Delivery

These solid aluminum, nonmagnetic baseplates provide a convenient and cost-effective platform for assembling prototype optical assemblies, conducting experiments, and mounting small subsystems. They are finished with a black, minimally reflective anodized coating and are through-drilled with a standard 1" (imperial) or 25 mm (metric) hole pattern offset 1/2" or 12.5 mm respectively, from the edges of the board.

Each breadboard features four or five mounting holes, offset from the array of 1/4"-20 threaded holes, which are counterbored to create an uninterrupted surface for any intended application. The four standard mounting holes are located at each corner of the breadboard, inset 1" from each edge (25 mm on metric). The larger imperial and metric breadboards have a fifth counterbored mounting hole at the center of each board (imperial: MB1218 through MB2448; metric: MB1560/M through MB15120/M, and MB3045/M through MB60120/M). Utilizing the center mounting hole increases the mounting options available, reduces stress at the corner mounting holes, and increases rigidity when heavy loads are placed on the boards. The mounting holes may be used to attach the breadboards to optical tables, other breadboards, mounting posts, brackets, or a variety of other surfaces or mounts. Please see the Mounting Options tab for more details.

Because the holes are threaded completely through these breadboards, components can be mounted on both sides at once. Ø1.5" Mounting Posts allow for adjustments to the height of the optical axis by mounting the breadboards above the surface of an optical tabletop (or another board). The breadboards can also be mounted vertically using 90° or Vertical Mounting Brackets.

For vacuum applications, we recommend using our selection of Unanodized Breadboards.

Other Breadboard Options
Optical Breadboard Enclosures are available to protect sensitive equipment from dust, stray light, acoustic noise, and thermal variations. Enclosures are offered completely sealed or with sliding door access.

Thorlabs also offers SlimLine Double Hole Density Aluminum Breadboards with 1/2" offset hole spacing, doubling the density of mounting holes. These are offered in sizes ranging from 4" x 24" to 8" x 36" (100 mm x 600 mm to 200 mm x 900 mm) with thicknesses of 0.5" (12.7 mm), making their slim profile ideal for compact work areas. The same double-hole-density pattern is also available on our circular breadboards.

For limited space applications, Thorlabs offers the MS12B and MS12B/M Mini-Series Breadboards. These breadboards feature increased tapped hole density and thinner breadboard thickness.

Mounting Options

Vertical Arrangement

Vertical Arrangement

Thorlabs' aluminum breadboards can be mounted vertically (or perpendicular to a mounting surface) using a wide variety of 90 degree mounting plates. For tall arrangements, we recommend the setup shown to the left. Here, the MB12 breadboard is vertically oriented using two VB01 Vertical Brackets. For smaller arrangements, the AB90, AP90, or AP90L Right-Angle Brackets may be used.

Rubber Damping Feet

Vibration Isolating Feet

Thorlabs' aluminum breadboards may be mounted on a set of AV2 Vibration Isolating Feet, rated for 32 kg. These sorbothane bumpers may be used to isolate a small breadboard from its mounting surface.

Not shown: Standard RDF1 Rubber Damping Feet may also be used where high vibrational damping is not necessary.

Adjustable Feet Mounts

Elevated Arrangement with Adjustable Mounting Feet

A set of Ø1.5" Post Mounts can be used to elevate an aluminum breadboard off of the work surface. At left, an MB1824 breadboard is shown with four P6 Mounting Posts. An adjustable, self-leveling BMF4 Mounting Foot is attached to each mounting post. The self-leveling mounting feet feature rubberized feet and screw thread height adjustment.

Not shown: DP14A Damped Posts are available in 14" lengths for vibration sensitive elevated mounting applications.

1.5" Post Mounting

Fixed Elevated Arrangement with Pedestal-Style Feet

A more permanent Aluminum Breadboard mounting option, shown to the left, features pedestal-style Ø1.5" Post Mounts clamped to an optic bench. The MB1824 Aluminum Breadboard to the left is elevated off the optic bench surface using a set of four P6 Mounting Posts, each with a PB4 Pedestal Base Adapter and PF175 Clamping Fork.

Not shown: Ø1.5" Translating Posts or Ø1.5" Damped Posts may also be used in lieu of the P6 Mounting Posts for applications requiring further height adjustment or sensitivity to vibrations.


Breadboard Enclosure Systems

Enclosures may be added to Thorlabs' aluminum breadboards to house light and dust-sensitive equipment. Thorlabs offers a variety of plexiglass and standard darkening enclosures. The XE25C5 enclosure shown to the left has the front panel removed for access. Enclosures with sliding doors fabricated from plexiglass or black hardboard are also available.

Item #Dimensions
(L x W x H)
Mass (kg)Weight (lbs)Mass (kg)aWeight (lbs)a
MB44" x 6" x 0.5"0.501.100.521.15
MB66" x 6" x 0.5"0.751.650.811.78
MB6246" x 24" x 0.5"3.006.614.6010.13
MB6366" x 36" x 0.5"4.509.926.1413.50
MB6486"x 48" x 0.5"6.0013.236.1413.50
MB88" x 8" x 0.5"1.332.931.403.09
MB8108" x 10" x 0.5"1.663.661.763.87
MB101210" x 12" x 0.5"2.505.512.645.80
MB1212" x 12" x 0.5"3.006.613.367.40
MB121812" x 18" x 0.5"4.509.925.8412.85
MB122412" x 24" x 0.5"6.0013.237.3616.20
MB123612" x 36" x 0.5"9.0019.8410.5223.15
MB124812" x 48" x 0.5"12.0026.4514.3231.50
MB1818" x 18" x 0.5"6.7014.77.5016.5
MB182418" x 24" x 0.5"9.0019.8411.0224.25
MB183018" x 30" x 0.5"11.5025.3  
MB183618" x 36" x 0.5"13.529.715.033.0
MB242424" x 24" x 0.5"12.0026.4514.6132.15
MB243624" x 36" x 0.5"18.0039.6818.0439.68
MB244824" x 48" x 0.5"24.0052.9127.0559.52
MB3030" x 30" x 0.5"19.2042.24  
MB1015/M100 mm x 150 mm0.501.100.671.47
MB1515/M150 mm x 150 mm0.751.650.922.03
MB1560/M150 mm x 600 mm3.006.614.6010.13
MB1590/M150 mm x 900 mm4.509.926.1413.50
MB15120/M150 mm x 1200 mm6.0013.236.1413.50
MB2020/M200 mm x 200 mm1.332.931.423.12
MB2025/M200 mm x 250 mm1.663.661.824.00
MB2530/M250 mm x 300 mm2.505.512.736.00
MB3030/M300 mm x 300 mm3.006.613.648.00
MB3045/M300 mm x 450 mm4.509.925.6112.35
MB3060/M300 mm x 600 mm6.0013.237.2716.00
MB3090/M300 mm x 900 mm9.0019.8410.7423.63
MB30120/M300 mm x 1200 mm12.0026.4514.3231.50
MB4545/M450 mm x 450 mm6.7014.77.5016.5
MB4560/M450 mm x 600 mm9.0019.8410.7323.60
MB4575/M450 mm x 750 mm11.2024.64  
MB4590/M450 mm x 900 mm13.529.715.033.0
MB6060/M600 mm x 600 mm12.0026.4513.8630.50
MB6090/M600 mm x 900 mm18.0039.6824.5053.90
MB60120/M600 mm x 1200 mm23.0050.7127.0559.52
MB7575/M750 mm x 750 mm18.6040.92  
  • These weights are approximate and are subject to change. The information is only to be used as a guideline
BreadboardsAluminum Breaboard
Nexus, Optimized Damping
Steel Breaboard
Intrinsically Damped
Aluminum Breaboard
Aluminum Honeycomb
Solid Aluminum Breaboard
Solid Aluminum
Breadboard Thickness60 mm (2.4")
110 mm (4.3")
58 mm (2.28")25 mm (0.98")
55 mm (2.2")
12.7 mm (0.5")
Working Surface430 Grade Stainless Steel Top PlateAluminumSolid Aluminum
Anodized or Unanodized
Top Skin5 mm (0.20")5 mm (0.20")6 mm (0.24")N/A
Bottom Skin5 mm (0.20")3 mm (0.12")3 mm (0.12")N/A
Core DesignHigh-Density Plated Steel Honeycomb
0.26 mm Thick
High-Density Plated Aluminum HoneycombN/A
FerromagnetismMagnetic or Non-Magnetic OptionsMagneticNon-Magnetic
Sealed HolesSealed (25 mm Depth) or Non-Sealed OptionsNon-SealedN/A
Threads and Spacing1/4"-20 (M6) Tapped Holes on 1" (25 mm) Centers
Distance from Edge to First Holes0.5" (12.5 mm) on all Sides1.5" (37.5 mm) on all Sides1.0" (25 mm) on all Sides0.5" (12.5 mm) on all Sides
Damping Nexus Damping Bar Nexus Damping Bar Nexus Damping BarN/A
60 mm
Nexus Damping Bar
 Nexus Damping Bar
25 mm
Nexus Damping Bar
Nexus Damping Bar
110 mm
Nexus Damping Bar
55 mm
Nexus Damping Bar
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Posted Comments:
Poster: tcohen
Posted Date: 2012-06-25 08:59:00.0
Response from Tim at Thorlabs: Thank you for your feedback! The current design has the mounting holes for the breadboard counterbored and offset which allows the full surface of the table to be used for mounting components. We would like to discuss the details and benefits of your proposed design with you, but we do not have your email. Please email us at techsupport@thorlabs.com to further discuss your design.
Posted Date: 2012-06-18 10:25:09.0
Opposite mount hole spacing to the hole pattern would be useful. As would having the mount holes counterbored so that the corner three holes in the breadboard can be used.
Poster: bdada
Posted Date: 2011-09-20 17:34:00.0
Response from Buki at Thorlabs: Thank you for your feedback. The MB series breadboards are made from solid aluminum so they are non-magnetic. We will clarify this on our website.
Poster: mabdelrahman
Posted Date: 2011-09-14 08:58:35.0
Are these breadboards magnetized? It may be useful to add this to the item description. Mohamed Ramy
Poster: tor
Posted Date: 2010-12-08 08:31:01.0
Response from Tor at Thorlabs to bezdecny: Thank you for your suggestion. We are using it to help determine whether this should be added as a stock item. In the meantime, I will contact you for more details to see whether we can provide this to you as a custom item.
Poster: bezdecny
Posted Date: 2010-12-07 11:08:17.0
It would be very useful if you had an option to purchase breadboards with opposite mounting hole spacing to hole pattern. For example a 300mm x 300mm board with M6 thread, but with mounting holes 10" apart.
Poster: apalmentieri
Posted Date: 2010-03-05 10:48:42.0
A response from Adam at Thorlabs: Thanks for your suggestion, we will work to make it easier to submit any required drawings with an RFQ. Please note that all drawings can be emailed to techsupport@thorlabs.com for an immediate quote.
Posted Date: 2010-03-04 14:42:52.0
It would be benifical to be able to attach a drawing to the custom breadboard RFQ page
Poster: kbuffington
Posted Date: 2007-09-20 13:53:19.0
There was no place for feedback on the custom breadboard page. Customers should be able to enter more than one custom breadboard request at a time, before submitting.
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Solid Aluminum Breadboards, Imperial
  Breadboard Sizing: L x W x Thickness (inches)
  Threading: All Imperial Breadboards feature 1/4"-20 Threads on 1" Centers
  MB4 - MB12 Sizes Feature Four Counterbored Mounting Holes
  MB1218 - MB30 Sizes Feature Five Counterbored Mounting Holes
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
MB4 Support Documentation
MB4 Aluminum Breadboard, 4" x 6" x 1/2", 1/4"-20 Taps
MB6 Support Documentation
MB6 Aluminum Breadboard 6" x 6" x 1/2", 1/4"-20 Taps
MB624 Support Documentation
MB624 Aluminum Breadboard, 6" x 24" x 1/2", 1/4"-20 Taps
MB636 Support Documentation
MB636 Aluminum Breadboard, 6" x 36" x 1/2", 1/4"-20 Taps
MB648 Support Documentation
MB648 Aluminum Breadboard, 6" x 48" x 1/2", 1/4"-20 Taps
MB8 Support Documentation
MB8 Aluminum Breadboard, 8" x 8" x 1/2", 1/4"-20 Taps
MB810 Support Documentation
MB810 Aluminum Breadboard, 8" x 10" x 1/2", 1/4"-20 Taps
MB1012 Support Documentation
MB1012 Aluminum Breadboard, 10" x 12" x 1/2", 1/4"-20 Taps
MB12 Support Documentation
MB12 Aluminum Breadboard, 12" x 12" x 1/2", 1/4"-20 Taps
MB1218 Support Documentation
MB1218 Aluminum Breadboard, 12" x 18" x 1/2", 1/4"-20 Taps
MB1224 Support Documentation
MB1224 Aluminum Breadboard, 12" x 24" x 1/2", 1/4"-20 Taps
MB1236 Support Documentation
MB1236 Aluminum Breadboard, 12" x 36" x 1/2", 1/4"-20 Taps
MB1248 Support Documentation
MB1248 Aluminum Breadboard, 12" x 48" x 1/2", 1/4"-20 Taps
MB18 Support Documentation
MB18 Aluminum Breadboard, 18" x 18" x 1/2", 1/4"-20 Taps
MB1824 Support Documentation
MB1824 Aluminum Breadboard, 18" x 24" x 1/2", 1/4"-20 Taps
MB1830 Support Documentation
MB1830 Aluminum Breadboard 18" x 30" x 1/2", 1/4"-20 Taps
Lead Time
MB1836 Support Documentation
MB1836 Aluminum Breadboard 18" x 36" x 1/2", 1/4"-20 Taps
MB2424 Support Documentation
MB2424 Aluminum Breadboard, 24" x 24" x 1/2", 1/4"-20 Taps
MB2436 Support Documentation
MB2436 Aluminum Breadboard, 24" x 36" x 1/2", 1/4"-20 Taps
MB2448 Support Documentation
MB2448 Aluminum Breadboard, 24" x 48" x 1/2", 1/4"-20 Taps
MB30 Support Documentation
MB30 Aluminum Breadboard 30" x 30" x 1/2", 1/4"-20 Taps
Solid Aluminum Breadboards, Metric
  Breadboard Sizing: L x W x Thickness (mm)
  Threading: All Metric Breadboards feature M6 Threads on 25 mm Centers
  MB1015/M - MB1515/M and MB2020/M - MB3030/M Sizes Feature Four Counterbored Mounting Holes
  MB1560/M - MB15120/M and MB3045/M - MB7575/M Sizes Feature Five Counterbored Mounting Holes
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Metric Price Available / Ships
MB1015/M Support Documentation
MB1015/M Aluminum Breadboard, 100 mm x 150 mm x 12.7 mm, M6 Taps
MB1515/M Support Documentation
MB1515/M Aluminum Breadboard, 150 mm x 150 mm x 12.7 mm, M6 Taps
MB1560/M Support Documentation
MB1560/M Aluminum Breadboard, 150 mm x 600 mm x 12.7 mm, M6 Taps
2 Weeks
MB1590/M Support Documentation
MB1590/M Aluminum Breadboard, 150 mm x 900 mm x 12.7 mm, M6 Taps
2 Weeks
MB15120/M Support Documentation
MB15120/M Aluminum Breadboard, 150 mm x 1200 mm x 12.7 mm, M6 Taps
2 Weeks
MB2020/M Support Documentation
MB2020/M Aluminum Breadboard, 200 mm x 200 mm x 12.7 mm, M6 Taps
MB2025/M Support Documentation
MB2025/M Aluminum Breadboard, 200 mm x 250 mm x 12.7 mm, M6 Taps
2 Weeks
MB2530/M Support Documentation
MB2530/M Aluminum Breadboard, 250 mm x 300 mm x 12.7 mm, M6 Taps
MB3030/M Support Documentation
MB3030/M Aluminum Breadboard, 300 mm x 300 mm x 12.7 mm, M6 Taps
MB3045/M Support Documentation
MB3045/M Aluminum Breadboard, 300 mm x 450 mm x 12.7 mm, M6 Taps
2 Weeks
MB3060/M Support Documentation
MB3060/M Aluminum Breadboard, 300 mm x 600 mm x 12.7 mm, M6 Taps
MB3090/M Support Documentation
MB3090/M Aluminum Breadboard, 300 mm x 900 mm x12.7 mm, M6 Taps
2 Weeks
MB30120/M Support Documentation
MB30120/M Aluminum Breadboard, 300 mm x 1200 mm x 12.7 mm, M6 Taps
2 Weeks
MB4545/M Support Documentation
MB4545/M Aluminum Breadboard 450 mm x 450 mm x 12.7mm M6 Taps
2 Weeks
MB4560/M Support Documentation
MB4560/M Aluminum Breadboard, 450 mm x 600 mm x 12.7 mm, M6 Taps
MB4575/M Support Documentation
MB4575/M Aluminum Breadboard, 450 mm x 750 mm x 12.7 mm, M6 Taps
Lead Time
MB4590/M Support Documentation
MB4590/M Aluminum Breadboard 450 mm x 900 mm x 12.7 mm M6 Taps
2 Weeks
MB6060/M Support Documentation
MB6060/M Aluminum Breadboard, 600 mm x 600 mm x 12.7 mm, M6 Taps
MB6090/M Support Documentation
MB6090/M Aluminum Breadboard, 600 mm x 900 mm x 12.7 mm, M6 Taps
2 Weeks
MB60120/M Support Documentation
MB60120/M Aluminum Breadboard, 600 mm x 1200 mm x 12.7 mm, M6 Taps
2 Weeks
MB7575/M Support Documentation
MB7575/M Aluminum Breadboard, 750 mm x 750 mm x 12.7 mm, M6 Taps
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