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Ø1/2" Universal Post Holders


  • Precision Wide, Square Relief Provides a Highly
    Stable Two-Line Contact with the Mounting Post
  • Each Post Holder Includes One Spring-Loaded
    Hex Locking Thumbscrew

TS25H

UPH6

UPH4

UPH3

UPH2

UPH1.5

UPH1

Front

Back

UPH2

360° Continuously
Adjustable

Magnets in Base Provide Holding
Force Before Lock Down

Related Items


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Universal Post Holder Features

Features

  • Reduce Time to Construct Assemblies
  • Spring-Loaded Thumbscrew Secures Post Prior to Final Locking
  • Universal Post Holders Provide a Swiveling Clamping Fork and Magnetic Base for Easy Alignment

Thorlabs' Ø1/2" Universal Post Holders simplify the task of mounting a Ø1/2" optical post on an optical table or breadboard. These post holders incorporate a swiveling base, allowing a choice between multiple mounting holes on the breadboard. Magnets in the bottom of the base aid in rough alignment prior to final positioning. Additionally, the base is hollow, which allows the post to rest on the optical table and enables maximum height adjustment.

These Universal Post Holders have been designed with the same key features of our popular Standard Post Holders. They feature and extra wide square relief cut machined vertically along the length of the part, as shown in the drawing to the right. This channel provides a highly-stable two-line contact between the post and post holder. Other post holder designs that do not have a relief cut provide less holding power, which leads to a downward drift in the post's position with time. Each post holder comes with a 3/16" (5 mm) hex spring-loaded thumbscrew. Additional quantities can be purchased separately below.

Thorlabs' large selection of standard post holders can all be converted into universal post holders by using a Thorlabs swivel base adapter.


Posted Comments:
tcohen  (posted 2012-02-29 15:51:00.0)
Response from Tim at Thorlabs: Thank you for your feedback. The TR50/M will be able to fit in the UPH2/M and you will be able to adjust its height with the thumbscrew. However, because the length of the post is shorter than the length of the post holder, the TR50/M will be under the top of the UPH2/M when sitting near the bottom. If this is a concern, we do offer shorter UPH at http://www.thorlabs.com/NewGroupPage9.cfm?ObjectGroup_ID=1982&pn=UPH1 and taller posts at http://www.thorlabs.com/NewGroupPage9.cfm?ObjectGroup_ID=1266.
user  (posted 2012-02-28 11:55:56.0)
TR50/M (50 mm) is compatible with UPH2/M(50.8 mm) or not? Is it possible to use TR50/M (50 mm) with UPH2/M(50.8 mm)? Thank you.
mathieu.perrin  (posted 2010-03-24 16:37:30.0)
The universal post holder is a component I personally highly recommend. No need to find a clamp, no need to change everything when you realize youre not right in front of the hole, magnets give a certain stiffness while allowing to move the optics parallel to the table : setting up an experiment suddenly becomes twice easier!

Ø1/2" Swiveling Magnetic Base Post Holders

UPH Post Holder Application
Click to Enlarge
View Imperial Product List
Item #QtyDescription
UPH31Ø1/2" Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 3"
TR31Ø1/2" Optical Post, SS, 8-32 Setscrew, 1/4"-20 Tap, L = 3"
KM100C1Kinematic Mount for up to 1.3" (33 mm) Tall Rectangular Optics, Right Handed
View Metric Product List
Item #QtyDescription
UPH75/M1Ø12.7 mm Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 75 mm
TR75/M1Ø12.7 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 75 mm
KM100C1Kinematic Mount for up to 1.3" (33 mm) Tall Rectangular Optics, Right Handed
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
  • Packs of 5 Also Available for 1" to 3" Lengths (30 mm to 75 mm)

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. Popular post holders are also available in packages of five for ease of ordering.

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 / Ships
UPH1 Support Documentation
UPH1Ø1/2" Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 1"
$30.35
Today
UPH1-P5 Support Documentation
UPH1-P5Ø1/2" Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 1", 5 Pack
$147.90
Today
UPH1.5 Support Documentation
UPH1.5Ø1/2" Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 1.5"
$30.86
Today
UPH1.5-P5 Support Documentation
UPH1.5-P5Ø1/2" Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 1.5", 5 Pack
$150.45
Today
UPH2 Support Documentation
UPH2Ø1/2" Universal Post Holder, Spring Loaded Locking Thumbscrew, L = 2"
$31.11
Today
UPH2-P5 Support Documentation
UPH2-P5Ø1/2" Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 2", 5 Pack
$151.98
Today
UPH3 Support Documentation
UPH3Ø1/2" Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 3"
$31.88
Today
UPH3-P5 Support Documentation
UPH3-P5Ø1/2" Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 3", 5 Pack
$156.06
Today
UPH4 Support Documentation
UPH4Ø1/2" Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 4"
$34.17
Today
UPH6 Support Documentation
UPH6Ø1/2" Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 6"
$36.72
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
UPH30/M Support Documentation
UPH30/MØ12.7 mm Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 30 mm
$30.35
3-5 Days
UPH30/M-P5 Support Documentation
UPH30/M-P5Ø12.7 mm Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 30 mm, 5 Pack
$147.90
Today
UPH40/M Support Documentation
UPH40/MØ12.7 mm Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 40 mm
$30.86
Today
UPH40/M-P5 Support Documentation
UPH40/M-P5Ø12.7 mm Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 40 mm, 5 Pack
$150.45
Today
UPH50/M Support Documentation
UPH50/MØ12.7 mm Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 50 mm
$31.11
3-5 Days
UPH50/M-P5 Support Documentation
UPH50/M-P5Ø12.7 mm Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 50 mm, 5 Pack
$151.98
Today
UPH75/M Support Documentation
UPH75/MØ12.7 mm Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 75 mm
$31.88
Today
UPH75/M-P5 Support Documentation
UPH75/M-P5Ø12.7 mm Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 75 mm, 5 Pack
$156.06
Today
UPH100/M Support Documentation
UPH100/MØ12.7 mm Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 100 mm
$34.17
Today
UPH150/M Support Documentation
UPH150/MØ12.7 mm Universal Post Holder, Spring-Loaded Locking Thumbscrew, L = 150 mm
$36.72
Today

Spring-Loaded 1/4"-20 and M6 x 1.0 Thumbscrews for Post Holders

Specification
Maximum Torquea 28 in·lbs (3.2 N·m)
  • Please note that we do not recommend using an L wrench to tighten the thumbscrew, as this may break off the screw head.

Click to Enlarge

Exploded View of the TS25H Thumbscrew
TS25H Mechanical Drawing
TS25H Drawing

These hex-locking, anodized aluminum thumbscrews have spring-loaded, completely retractable Delrin® tips that provide sufficient force on a post to hold it in place as final positional adjustments are being made. They can then be locked into place using a 3/16" (for the TS25H) or 5 mm (for the TS6H/M) balldriver to prevent any further movement of the post. The hex size is also engraved on the face of the thumbscrew, thereby enabling easy identification in the lab.

The TS25H has 1/4"-20 threads while the TS6H/M has M6 x 1.0 threads for compatibility with our imperial and metric Ø1/2" post holders, respectively. The recommended maximum torque is 28 in·lbs (3.2 N·m). Please note that we do not recommend using an L wrench to tighten the thumbscrew, as this may break off the screw head.

If a thumbscrew without a spring-loaded tip is preferred, we recommend our vacuum-compatible thumbscrews. Alternatively, the tips can be removed from these thumbscrews by unthreading the setscrew in the front of the thumbscrew with a 1/16" (1.5 mm) balldriver. The spring and tip can then be removed from the thumbscrew, in the order shown in the image to the right. However, the resulting contact face of the thumbscrew will have a center hole, unlike the contact face of our vacuum-compatible thumbscrews.

For ease of ordering, these thumbscrews are available individually or in packages of five.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
TS25H Support Documentation
TS25HSpring-Loaded 3/16" Hex-Locking Thumbscrew, 1/4"-20 Thread
$2.50
Today
TS25H-P5 Support Documentation
TS25H-P5Spring-Loaded 3/16" Hex-Locking Thumbscrew, 1/4"-20 Thread, 5 Pack
$12.50
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
TS6H/M Support Documentation
TS6H/MSpring-Loaded 5 mm Hex-Locking Thumbscrew, M6 x 1.0 Thread
$2.50
Today
TS6H/M-P5 Support Documentation
TS6H/M-P5Spring-Loaded 5 mm Hex-Locking Thumbscrew, M6 x 1.0 Thread, 5 Pack
$12.50
Today

Swivel Base Adapter

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

Our 360° swivel base adapter adds the swivel and magnetic retention functionality of our universal post holders to our standard Ø1/2" post holders. This allows users to minimize 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. Please note that this anodized aluminum adapter does not offer the same height flexibility of the universal post holders above, which allow the post to be lowered all the way to the table.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
UPHA Support Documentation
UPHASwivel Base Adapter
$20.71
Today
UPHA-P5 Support Documentation
UPHA-P5Swivel Base Adapter, 5 Pack
$101.49
Today
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