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Stainless Steel Optical Posts: Ø1/2", Ø12.7 mm, and Ø12 mm


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Stainless Steel Optical Posts: Ø1/2, Ø12.7 mm, and Ø12 mm

Features

  • Precision Ground Nonmagnetic Stainless Steel
  • Available Diameters: 1/2", 12.7 mm, and 12 mm
  • Bottom-Located 1/4"-20 (M6) Tapped Hole
  • Top-Located 8-32 (M4) Removable Stud
  • Available in a Variety of Lengths Ranging from 0.75" (20 mm) to 12" (300 mm)
  • Graduated Posts Aid Optic Alignment
  • Ø12 mm Versions for our Japanese Customers (See -JP Item Numbers Below)

Thorlabs’ solid stainless steel posts are a basic building block required in most rigid constructions.  The precision-ground Ø1/2" (12.7 mm) posts, which are fabricated from nonmagnetic 303 stainless steel, are compatible with our Ø1/2" post holders and construction accessories. A bottom-located 1/4"-20 (M6) tapped hole and top-located 8-32 (M4) removable mounting stud provide compatibility with virtually all of our optic mounts. The 8-32 (M4) removable stud provides additional flexibility by allowing 8-32 (M4) cap screws to be used with our universal mounts. For convenience, a Ø1/8” hole is provided to slip a 5/64" (2.5 mm) balldriver through the post for extra leverage when tightening components. A wide range of post lengths is available, ranging from 0.75” (20 mm) to 12” (300 mm).

Thorlabs offers a line of adapters and accessories which increase the usability of these posts; please see our complete line of Ø1/2" Posts Assemblies for more information.

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Posted Comments:
Poster: daniel.weber
Posted Date: 2014-04-05 14:35:41.703
Dear Sir or Madam, do you offer adapter from 8-32 to 1/4"-20 studs for the optical posts. So one could use at the top part of the posts for both thread sizes? Best regards Daniel Weber
Poster: ChristianTMWeber
Posted Date: 2013-06-10 14:08:30.8
Hello, what is the magnetic permeability of the steel used for the posts? Regards
Poster: cdaly
Posted Date: 2013-06-11 14:59:00.0
Response from Chris at Thorlabs: Thank you for using our web feedback. Unfortunately, we have not measured the magnetic permeability, but the stainless steel used is 303 grade.
Poster: cdaly
Posted Date: 2012-11-30 16:23:33.093
Response from Chris at Thorlabs: Thank you for using our feedback feature. We are unable to provide 2010 SolidWorks files directly as the version we use for design (2012) restricts us from creating backwards compatible files, but we do have Step files available for download as well. These files can be opened in SolidWorks 2010 and then saved as an .sldprt file, which will give you the format you require.
Poster: xiaoqiang026403
Posted Date: 2012-11-29 02:12:56.95
I use SolidWorks 2010,but some of your products' Drawing and Documents (SolidWorks) are opened by SolidWorks 2012. Could you send the SolidWorks Documents in version 2010?
Poster: tcohen
Posted Date: 2012-05-22 12:32:00.0
Response from Tim at Thorlabs: Our standard 1/2" Diameter Stainless Steel Optical Posts are machined to a diameter of .499" +.000" -.002".
Poster: ygan1129
Posted Date: 2012-05-21 15:14:28.0
What are the tolerances on the diameter of the posts?
Poster: tcohen
Posted Date: 2012-02-27 11:03:00.0
Response from Tim at Thorlabs: Thank you for your feedback. There are different mounting methods and so your part list will depend on your preferred setup. I have contacted you directly to discuss your options.
Poster: ahmadvand
Posted Date: 2012-02-27 02:32:19.0
Dear Thorlabs; I want to buy below parts for my university. Unfortunatly, I can not choose relevant optomechanic parts, due to the different options. It would be very appreciated if you give me a complete optomechanic list(post, post holder, lens mount, mirror mount, polarizor mount, laser mount) for constructing a setup with the below parts. Best Regards Hossein Ahmadvand Parts: - HNL050L-EC - HeNe Laser, 632.8 nm, 5 mW, Polarized, 220 VAC - GTH10M-A - Mounted Glan Thompson Calcite Polarizer, 10 mm x 10 mm Clear Aperture, 350 - 700 nm AR Coating - LPVISB050-MP - Ø12.5 mm SM05-Mounted Linear Polarizer, VIS B (500 - 720 nm) - DET36A/M - Si Detector, 350-1100 nm, 14 ns Rise Time, 13 mm2, Metric - DET10A/M - Si Detector, 200-1100 nm, 1 ns Rise Time, 0.8 mm2, Metric - CM1-PBS252 - Cube-Mounted Polarizing Beamsplitter, 620 - 1000 nm - MC2000 - Optical Chopper System with MC1F10 10-slot (36°) Chopper Blade - MC1F100 - 100 Slot Blade for Optical Chopper, 250 Hz - 10kHz - PF05-03-P01 - Ø1/2" (Ø12.7 mm) Protected Silver Mirror, 0.24" (6.0 mm) Thick - BB05-E02 - Ø1/2" Broadband Dielectric Mirror, 400-750 nm - LB4915 - f = 50.0 mm, Ø1/2" UV Fused Silica Bi-Convex Lens, Uncoated
Poster: bdada
Posted Date: 2012-02-02 18:54:00.0
Response from Buki at Thorlabs: Thank you for using our feedback forum. We understand that it may not always be convenient to adjust the height of the post within the post holder. We have passed on your suggestion to our design team and we will consider it as we continue to expand our selection of posts. Please contact TechSupport@thorlaabs.com if you have any questions.
Poster:
Posted Date: 2012-02-02 15:37:56.0
I would like to see 2.5" tall posts offered. The gap from 2" to 3" can be critical and hard to fill without a post size in between.
Poster: klee
Posted Date: 2009-12-03 10:46:47.0
A response from Ken at Thorlabs to eoconnor: The tolerance on the length of the post is ±0.005".
Poster: eoconnor
Posted Date: 2009-12-02 21:22:32.0
Can you please give me the tolerance on the length of the post? Thank you!
Poster: Laurie
Posted Date: 2009-01-12 18:46:24.0
Response from Laurie at Thorlabs to wenzao_li: All of the documentation for the product line can be found by clicking on the "Drawings & Documents" Tab on this page. If you experience problems with any of the files, please let us know.
Poster: wenzao_li
Posted Date: 2009-01-12 18:08:13.0
The drawings are missing on this web page http://www.thorlabs.com/NewGroupPage9.cfm?ObjectGroup_ID=1266
Poster: Tyler
Posted Date: 2008-04-09 14:29:12.0
Response from Tyler at Thorlabs: Thank you for the product feedback on the 2.5 mm hole on the post that is used for tightening. I will forward this comment to our product engineers so that they can consider this when designing any future post or post holder products.
Poster:
Posted Date: 2008-04-09 12:31:33.0
The 5/64" (2.5mm) hole is always getting caught in the post holder. This can be somewhat irritating. However, I do like the ability to tighten something down without damaging the outside shank.
Poster: technicalmarketing
Posted Date: 2008-02-08 11:00:42.0
If you are looking for a 12.5 mm diameter post with M4 taps on both ends, you have two options: (1)You can purchase one of our TR series posts and an AS4M6M adapter, which will allow you to switch from the internal M6 threading on the one side of the post to internal M4 threads. (2) Contact our technical support staff (techsupport@thorlabs.com) and request a quote for a custom TR post with M4 taps on both ends.
Poster: hholst-pedersen
Posted Date: 2008-02-08 10:14:39.0
Hi! I need more Ø 12,5mm posts with #8-32 (m4) tapped holes in both top and base. Where can I find that? I only find Ø1/2" posts with #8-32 tapped hole in top and #4-40 in base! Best regards, Hege Holst-Pedersen
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Ø1/2" Stainless Steel Optical Posts - Imperial
  One 8-32 Tapped Hole on Top and One 1/4"-20 Tapped Hole at Base
  Removable 8-32 Threaded Stud
  Available Individually in Lengths Ranging from 3/4" to 12"
  Packs of 5 Also Available for 3/4" to 6" Lengths

These nonmagnetic stainless steel posts are precision ground to Ø1/2". One end has a 1/4"-20 tapped hole, while the other end has a removable 8-32 threaded stud. A side-located Ø0.13" (Ø3.1 mm) hole is bored straight through the post; a balldriver can be inserted through the hole to provide extra leverage when tightening mounted components. To reduce packaging waste, we offer our most popular sizes in packs of five. 

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
TR075 Support Documentation
TR075 Ø1/2" x 3/4" Stainless Steel Optical Post, 8-32 Stud, 1/4"-20 Tapped Hole
$4.74
Today
TR075-P5 Support Documentation
TR075-P5 Ø1/2" x 3/4" Stainless Steel Optical Post, 8-32 Stud, 1/4"-20 Tapped Hole, 5 Pack
$22.55
Today
TR1 Support Documentation
TR1 Ø1/2" x 1" Stainless Steel Optical Post, 8-32 Stud, 1/4"-20 Tapped Hole
$4.74
Today
TR1-P5 Support Documentation
TR1-P5 Ø1/2" x 1" Stainless Steel Optical Post, 8-32 Stud, 1/4"-20 Tapped Hole, 5 Pack
$22.55
Today
TR1.5 Support Documentation
TR1.5 Ø1/2" x 1.5" Stainless Steel Optical Post, 8-32 Stud, 1/4"-20 Tapped Hole
$4.97
Today
TR1.5-P5 Support Documentation
TR1.5-P5 Ø1/2" x 1.5" Stainless Steel Optical Post, 8-32 Stud, 1/4"-20 Tapped Hole, 5 Pack
$23.60
Today
TR2 Support Documentation
TR2 Ø1/2" x 2" Stainless Steel Optical Post, 8-32 Stud, 1/4"-20 Tapped Hole
$5.19
Today
TR2-P5 Support Documentation
TR2-P5 Ø1/2" x 2" Stainless Steel Optical Post, 8-32 Stud, 1/4"-20 Tapped Hole, 5 Pack
$24.65
Today
TR3 Support Documentation
TR3 Ø1/2" x 3" Stainless Steel Optical Post, 8-32 Stud, 1/4"-20 Tapped Hole
$5.42
Today
TR3-P5 Support Documentation
TR3-P5 Ø1/2" x 3" Stainless Steel Optical Post, 8-32 Stud, 1/4"-20 Tapped Hole, 5 Pack
$25.75
Today
TR4 Support Documentation
TR4 Ø1/2" x 4" Stainless Steel Optical Post, 8-32 Stud, 1/4"-20 Tapped Hole
$5.87
Today
TR4-P5 Support Documentation
TR4-P5 Ø1/2" x 4" Stainless Steel Optical Post, 8-32 Stud, 1/4"-20 Tapped Hole, 5 Pack
$27.90
Today
TR6 Support Documentation
TR6 Ø1/2" x 6" Stainless Steel Optical Post, 8-32 Stud, 1/4"-20 Tapped Hole
$6.77
Today
TR6-P5 Support Documentation
TR6-P5 Ø1/2" x 6" Stainless Steel Optical Post, 8-32 Stud, 1/4"-20 Tapped Hole, 5 Pack
$32.15
Today
TR8 Support Documentation
TR8 Ø1/2" x 8" Stainless Steel Optical Post, 8-32 Stud, 1/4"-20 Tapped Hole
$8.12
Today
TR10 Support Documentation
TR10 Ø1/2" x 10" Stainless Steel Optical Post, 8-32 Stud, 1/4"-20 Tapped Hole
$9.02
Today
TR12 Support Documentation
TR12 Ø1/2" x 12" Stainless Steel Optical Post, 8-32 Stud, 1/4"-20 Tapped Hole
$10.82
Today
Ø12.7 mm Stainless Steel Optical Posts - Metric
  One M4 Tapped Hole at Top and One M6 Tapped Hole at Base
  Removable M4-Threaded Stud
  Available Individually in Lengths Ranging from 20 to 300 mm
  Packs of 5 Also Available for 20 to 150 mm lengths

These nonmagnetic stainless steel posts are precision ground to Ø12.7 mm. One end has an M6 tapped hole, while the other end has a removable M4-threaded stud. To easily distinguish these metric posts from their imperial counterparts featured above, the metric posts have an extra ring-shaped groove at the upper end of the post. A side-located Ø0.13" (Ø3.1 mm) hole is bored straight through the post; a balldriver can be inserted through the hole to provide extra leverage when tightening mounted components. To reduce packaging waste, we offer our most popular sizes in packs of five. 

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Metric Price Available / Ships
TR20/M Support Documentation
TR20/M Ø12.7 mm x 20 mm Stainless Steel Optical Post, M4 Stud, M6-Tapped Hole
$4.74
Today
TR20/M-P5 Support Documentation
TR20/M-P5 Ø12.7 mm x 20 mm Stainless Steel Optical Post, M4 Stud, M6-Tapped Hole, 5 Pack
$22.55
Today
TR30/M Support Documentation
TR30/M Ø12.7 mm x 30 mm Stainless Steel Optical Post, M4 Stud, M6-Tapped Hole
$4.74
Today
TR30/M-P5 Support Documentation
TR30/M-P5 Ø12.7 mm x 30 mm Stainless Steel Optical Post, M4 Stud, M6-Tapped Hole, 5 Pack
$22.55
Today
TR40/M Support Documentation
TR40/M Ø12.7 mm x 40 mm Stainless Steel Optical Post, M4 Stud, M6-Tapped Hole
$4.97
Today
TR40/M-P5 Support Documentation
TR40/M-P5 Ø12.7 mm x 40 mm Stainless Steel Optical Post, M4 Stud, M6-Tapped Hole, 5 Pack
$23.60
Today
TR50/M Support Documentation
TR50/M Ø12.7 mm x 50 mm Stainless Steel Optical Post, M4 Stud, M6-Tapped Hole
$5.19
Today
TR50/M-P5 Support Documentation
TR50/M-P5 Ø12.7 mm x 50 mm Stainless Steel Optical Post, M4 Stud, M6-Tapped Hole, 5 Pack
$24.65
Today
TR75/M Support Documentation
TR75/M Ø12.7 mm x 75 mm Stainless Steel Optical Post, M4 Stud, M6-Tapped Hole
$5.42
Today
TR75/M-P5 Support Documentation
TR75/M-P5 Ø12.7 mm x 75 mm Stainless Steel Optical Post, M4 Stud, M6-Tapped Hole, 5 Pack
$25.75
Today
TR100/M Support Documentation
TR100/M Ø12.7 mm x 100 mm Stainless Steel Optical Post, M4 Stud, M6-Tapped Hole
$5.87
Today
TR100/M-P5 Support Documentation
TR100/M-P5 Ø12.7 mm x 100 mm Stainless Steel Optical Post, M4 Stud, M6-Tapped Hole, 5 Pack
$27.90
Today
TR150/M Support Documentation
TR150/M Ø12.7 mm x 150 mm Stainless Steel Optical Post, M4 Stud, M6-Tapped Hole
$6.77
Today
TR150/M-P5 Support Documentation
TR150/M-P5 Ø12.7 mm x 150 mm Stainless Steel Optical Post, M4 Stud, M6-Tapped Hole, 5 Pack
$32.15
Today
TR200/M Support Documentation
TR200/M Ø12.7 mm x 200 mm Stainless Steel Optical Post, M4 Stud, M6-Tapped Hole
$8.12
Today
TR250/M Support Documentation
TR250/M Ø12.7 mm x 250 mm Stainless Steel Optical Post, M4 Stud, M6-Tapped Hole
$9.02
Today
TR300/M Support Documentation
TR300/M Ø12.7 mm x 300 mm Stainless Steel Optical Post, M4 Stud, M6-Tapped Hole
$10.82
Today
Ø1/2" (Ø12.7 mm) Graduated Stainless Steel Optical Posts
  • Engraved Scale for Accurate Post Height Adjustments
  • Labeled Increments Every 0.05" (1 mm)
  • Ideal for Use with Lenses in Series

These are identical to our Ø1/2" TR posts above, but feature an engraved scale along their side. This scale provides a means to quickly and accurately align optics to your optical axis. A removable 8-32 (M4) mounting stud at the top of each post is compatible with many components such as fixed optic mounts, while a 1/4"-20 (M6) tap is on the other end of the post for mounting larger components.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
TR2E Support Documentation
TR2E Ø1/2" x 2" Graduated Stainless Steel Optical Post
$12.00
Today
TR3E Support Documentation
TR3E Ø1/2" x 3" Graduated Stainless Steel Optical Post
$14.00
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
TR50E/M Support Documentation
TR50E/M Ø12.7 mm x 50 mm Graduated Stainless Steel Optical Post, Metric
$12.00
Today
TR75E/M Support Documentation
TR75E/M Ø12.7 mm x 75 mm Graduated Stainless Steel Optical Post, Metric
$14.00
Today
Ø12 mm Stainless Steel Optical Posts
  One M4 Tapped Hole at Top and One M6 Tapped Hole at Base
  Removable M4 Threaded Stud

These nonmagnetic stainless steel posts, which are especially designed for our Japanese customers, are precision ground to Ø12 mm. The Ø12 mm Posts are compatible with our PH-Series of Post Holders and all Ø1/2" TR related products. One end has an M6 tapped hole, while the other end has a removable M4-threaded stud

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
TR20/M-JP Support Documentation
TR20/M-JP Ø12 mm x 20 mm Stainless Steel Optical Post, Japanese
$4.74
Today
TR30/M-JP Support Documentation
TR30/M-JP Ø12 mm x 30 mm Stainless Steel Optical Post, Japanese
$4.74
Today
TR40/M-JP Support Documentation
TR40/M-JP Ø12 mm x 40 mm Stainless Steel Optical Post, Japanese
$4.97
Today
TR50/M-JP Support Documentation
TR50/M-JP Ø12 mm x 50 mm Stainless Steel Optical Post, Japanese
$5.19
Today
TR75/M-JP Support Documentation
TR75/M-JP Ø12 mm x 75 mm Stainless Steel Optical Post, Japanese
$5.42
Today
TR100/M-JP Support Documentation
TR100/M-JP Ø12 mm x 100 mm Stainless Steel Optical Post, Japanese
$5.87
Today
TR150/M-JP Support Documentation
TR150/M-JP Ø12 mm x 150 mm Stainless Steel Optical Post, Japanese
$6.77
Today
TR200/M-JP Support Documentation
TR200/M-JP Ø12 mm x 200 mm Stainless Steel Optical Post, Japanese
$8.12
Today
TR250/M-JP Support Documentation
TR250/M-JP Ø12 mm x 250 mm Stainless Steel Optical Post, Japanese
$9.02
Today
TR300/M-JP Support Documentation
TR300/M-JP Ø12 mm x 300 mm Stainless Steel Optical Post, Japanese
$10.82
Today
Ø1/2" (Ø12.7 mm) Translating Optical Posts
  Provides 0.25" (6.4 mm) of Travel
  0.04" (1 mm) Travel per Revolution of Adjustment Ring
  Anti-Backlash Spring Design
  Lockable Design with Non-Rotating Tip

The TRT2 translating post has been designed to provide quick, stable height adjustment of a mounted component within an optical setup. Utilizing a knurled collet, the TRT2 can translate ±0.13" (±3 mm) from its nominal position via 0.04 (1 mm) translation per revolution. When fully compressed, the post is 2.01" (50.1 mm) and a maximum length of 2.26" (57.4 mm). Once the desired height is achieved, the TRT2 can be locked into place with a locking ring. Both the adjustment collar and locking ring have diameters slightly smaller than the post diameter, allowing the entire post to pass through all of our Ø1/2" construction accessories without interference.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
TRT2 Support Documentation
TRT2 Translating Ø1/2" Optical Post: 2" to 2 1/4"
$89.00
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
TRT2/M Support Documentation
TRT2/M Translating Ø12.7 mm Optical Post: 51 mm to 57 mm, Metric
$89.00
Today
Ø1/2" (Ø12.7 mm) Optical Construction Posts
TR3T Application
Click to Enlarge
Side-Mounted KM100 Rests Flat on TR3T
  • Counterbored and Tapped Posts for Constructing Custom Mounting Configurations
  • TR3C (TR75C/M): Five #8 (M4) Counterbores
  • TR3T (TR75T/M): Three 8-32 (M4) Tapped Holes

These TR posts are designed for mounting optomechanical components in non-standard configurations. By using a combination of a tapped construction post along with a counterbored construction post, components can be mounted at an arbitrary angle to keep your beam path unobstructed. The TR3C (TR75C/M) offers five #8 (M4) counterbores and a mounting flat while the TR3T (TR75T/M) offers three 8-32 (M4) tapped holes and a mounting flat. The posts can be combined by using an 8-32 (M4) cap screw. Additionally, a single post may be used to mount an optomechanical component on its side using the mounting flat on each post (see image to the right).

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
TR3T Support Documentation
TR3T 90° 8-32 Tapped Ø1/2" Optical Construction Post
$16.00
Today
TR3C Support Documentation
TR3C 90° #8 Counterbored Ø1/2" Optical Construction Post
$16.00
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
TR75T/M Support Documentation
TR75T/M 90° M4 Tapped Ø12.7 mm Optical Construction Post, Metric
$16.00
Today
TR75C/M Support Documentation
TR75C/M 90° M4 Counterbored Ø12.7 mm Optical Construction Post, Metric
$16.00
Today
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