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Setscrews and Thumbscrews


  • Single-Ended, Double-Ended, Nylon-Tipped, and Vented, Vacuum-Compatible Setscrews
  • Spring-Loaded or Vacuum-Compatible Thumbscrews
  • Imperial Sizes: 4-40, 6-32, 8-32, and 1/4"-20
  • Metric Sizes: M3 x 0.5, M4 x 0.7, and M6 x 1.0

SS8N013

8-32 Nylon-Tipped Setscrew, 1/8" Long

SS6MS12

M6 x 1.0 Stainless Steel Setscrew, 12 mm Long

SS8S050

8-32 Stainless Steel Setscrew, 1/2" Long

SS25S075V

Vented, Vacuum-Compatible
1/4"-20 Setscrew, 3/4" Long

TS25HV

1/4"-20 Vacuum-Compatible
Thumbscrew

TS25H

1/4"-20 Spring-Loaded Thumbscrew

Vent Hole

Related Items


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Features

  • Stainless Steel (Single- or Double-Ended) or Nylon-Tipped Alloy Steel Setscrews
    • Imperial Sizes: 4-40, 6-32, 8-32, and 1/4"-20
    • Metric Sizes: M3 x 0.5, M4 x 0.7, and M6 x 1.0
  • Vented, Vacuum-Compatible 1/4"-20 and M6 x 1.0 Setscrews Also Available
  • Spring-Loaded or Vacuum-Compatible Thumbscrews
    • 1/4"-20 or M6 x 1.0-Threaded

Setscrews
Standard stainless steel setscrews are available in many industry-standard sizes. In addition, we offer 6-32, 8-32, M3 x 0.5, and M4 x 0.7 threaded alloy steel setscrews with a non-marring nylon tip. We also offer 1/4"-20 and M6 vented, vacuum-compatible setscrews. Double-ended setscrews that are designed to be easily removed from posts or mounts are also available. With a hex socket on both ends, double-ended setscrews can be easily removed, eliminating the need for pliers and the frustration of stuck screws.

Thumbscrews
Our 1/4"-20 and M6 x 1.0 thumbscrews are available with a spring-loaded tip or a vacuum-compatible finish and are a direct replacement for the thumbscrews used on our Ø1/2" post holders. Thumbscrews with spring-loaded tips are available individually or in packages of five for ease of ordering.


Posted Comments:
TMORMILE  (posted 2018-03-21 09:07:15.477)
Good Morning, i'm looking for part number SS4S019 but nothing comes up when i search on your web site ? that number is called out on your part CP12 Tony Mormile
llamb  (posted 2018-03-22 08:53:56.0)
Hello, thank you for contacting Thorlabs. While we do not offer the SS4S019 as a standard part on our website, we can offer this as a special component item. Otherwise, you can also consider the stock SS4S025, which is 1/16" longer and can also be used in the CP12. I will reach out to you directly if you are interested in a special order of the SS4S019.
stepanenko  (posted 2016-02-03 09:47:44.303)
Metric nylon tipped M3 and M4 set screws would be great to have.
besembeson  (posted 2016-02-04 10:43:41.0)
Response from Bweh at Thorlabs USA: Thanks for your feedback. I will contact you regarding providing these as special items for now. We will also look into expanding our offerings for the nylon tipped set screws.
jim.jack  (posted 2014-06-26 15:27:32.553)
The drawing for the SS6N013 show an 8-32 thread but the description calls for a 6-32 thread. Can you clarify please.
myanakas  (posted 2014-06-30 05:00:19.0)
Response from Mike at Thorlabs: The 8-32 thread callout was an error in our PDF drawing. I apologize for any confusion this may have caused. Based on this feedback, the drawing has been corrected to show that the SS6N013 has a 6-32 thread. Thank you for taking the time to point out this error.
jack  (posted 2009-05-08 11:22:40.0)
Reply from Jack at Thorlabs: Yes, we can offer this in metric size. a quotation has been emailed to you.
loconnor  (posted 2009-05-07 09:44:46.0)
Hi, Do you provide these screws in metric sizes? Liam.

4-40 Stainless Steel Setscrews

Item #LengthHexMaterialQuantity
SS4S025 1/4" 0.050" 18-8 Stainless Steel 50

We also offer the HW-KIT5 4-40 cap screw and setscrew kit.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
SS4S025 Support Documentation
SS4S025Customer Inspired! 4-40 Stainless Steel Setscrew, 1/4" Long, Pack of 50
$9.64
Today

M3 x 0.5 Stainless Steel Setscrews

Item # Length Hex Material Quantity
SS3M6 6 mm 1.5 mm 18-8 Stainless Steel 50

We also offer the HW-KIT5/M M3 cap screw and setscrew kit.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Metric Price Available / Ships
SS3M6 Support Documentation
SS3M6Customer Inspired! M3 x 0.5 Stainless Steel Setscrew, 6 mm Long, Pack of 50
$9.64
Today

M3 x 0.5 Nylon-Tipped Setscrews

Nylon-Tipped Setscrew Length
Item # Lengtha Hex Material Quantity
SS3MN3 3 mm 1.5 mm Grade 8 Alloy Steel with Black Oxide Coating, 0.8 mm Tall Nylon Tip 10
SS3MN4 4 mm
SS3MN6 6 mm
  • The nylon tip extends beyond the end of the setscrew by approximately 0.8 mm.

These nylon-tipped setscrews are used in place of standard setscrews to avoid marring or stressing optics or other mating parts.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Metric Price Available / Ships
SS3MN3 Support Documentation
SS3MN3M3 x 0.5 Nylon-Tipped Setscrew, 3 mm Long, Pack of 10
$11.54
Today
SS3MN4 Support Documentation
SS3MN4Customer Inspired! M3 x 0.5 Nylon-Tipped Setscrew, 4 mm Long, Pack of 10
$12.05
Today
SS3MN6 Support Documentation
SS3MN6M3 x 0.5 Nylon-Tipped Setscrew, 6 mm Long, Pack of 10
$12.57
Today

6-32 Nylon-Tipped Setscrews

Nylon-Tipped Setscrew Length
Item # Lengtha Hex Material Quantity
SS6N013 1/8" 1/16" Grade 8 Alloy Steel with Black Oxide Coating, 1/32" Tall Nylon Tip 10
  • The nylon tip extends beyond the end of the setscrew by approximately 1/32".

These nylon-tipped setscrews are used in place of standard setscrews to avoid marring or stressing optics or other mating parts.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
SS6N013 Support Documentation
SS6N0136-32 Nylon-Tipped Setscrew, 1/8" Long, Pack of 10
$12.44
Today

8-32 Stainless Steel Single-Ended, Double-Ended, and Nylon-Tipped Setscrews

Item # Length Hex Material Quantity
SS8S050 1/2" 5/64" 18-8 Stainless Steel 50
SS8E50D 1/2" 5/64" on Both Ends 300 Series Stainless Steel 10
SS8N013a 1/8" 5/64" 18-8 Stainless Steel, 3/64" Tall Nylon Tip 10
  • These nylon-tipped setscrews are used in place of standard setscrews to avoid marring or stressing of mating parts.

We also offer the HW-KIT1 8-32 cap screw kit and HW-KIT3 8-32 setscrew kit.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
SS8S050 Support Documentation
SS8S050Customer Inspired! 8-32 Stainless Steel Setscrew, 1/2" Long, Pack of 50
$5.76
Today
SS8E50D Support Documentation
SS8E50D8-32 Stainless Steel Setscrew with Hex on Both Ends, 1/2" Long, Pack of 10
$9.38
Today
SS8N013 Support Documentation
SS8N0138-32 Stainless Steel Nylon-Tipped Setscrew, 1/8" Long, Pack of 10
$11.42
Today

M4 x 0.7 Stainless Steel Single- and Double-Ended Setscrews

Item #LengthHexMaterialQuantity
SS4MS12 12 mm 2 mm 18-8 Stainless Steel 50
SS4M12D 12 mm 2 mm on Both Ends 300 Series Stainless Steel 10

We also offer the HW-KIT1/M M4 cap screw kit and HW-KIT3/M M4 setscrew kit.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Metric Price Available / Ships
SS4MS12 Support Documentation
SS4MS12Customer Inspired! M4 x 0.7 Stainless Steel Setscrew, 12 mm Long, Pack of 50
$5.82
Today
SS4M12D Support Documentation
SS4M12DM4 x 0.7 Stainless Steel Setscrew with Hex on Both Ends, 12 mm Long, Pack of 10
$9.48
Today

M4 x 0.7 Nylon-Tipped Setscrews

Nylon-Tipped Setscrew Length
Item # Lengtha Hex Material Quantity
SS4MN4 4 mm 2 mm Grade 8 Alloy Steel with Black Oxide Coating, 1.2 mm Tall Nylon Tip 10
SS4MN6 6 mm
SS4MN10 10 mm
  • The nylon tip extends beyond the end of the setscrew by approximately 1.2 mm.

These nylon-tipped setscrews are used in place of standard setscrews to avoid marring or stressing optics or other mating parts.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Metric Price Available / Ships
SS4MN4 Support Documentation
SS4MN4Customer Inspired! M4 x 0.7 Nylon-Tipped Setscrew, 4 mm Long, Pack of 10
$11.54
Today
SS4MN6 Support Documentation
SS4MN6M4 x 0.7 Nylon-Tipped Setscrew, 6 mm Long, Pack of 10
$12.05
Today
SS4MN10 Support Documentation
SS4MN10M4 x 0.7 Nylon-Tipped Setscrew, 10 mm Long, Pack of 10
$13.60
Today

1/4"-20 Stainless Steel Single- and Double-Ended Setscrews

Item # Length Hex Material Quantity
SS25S050 1/2" 1/8" 18-8 Stainless Steel 25
SS25E63D 5/8" 1/8" on Both Ends 10
SS25S075 3/4" 1/8" 25
SS25S10 1" 1/8" 25

We also offer the HW-KIT2 1/4"-20 cap screw and setscrew kit and the HW-KIT4 1/4"-20 setscrew kit.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
SS25S050 Support Documentation
SS25S050Customer Inspired! 1/4"-20 Stainless Steel Setscrew, 1/2" Long, Pack of 25
$5.76
Today
SS25E63D Support Documentation
SS25E63D1/4"-20 Stainless Steel Setscrew with Hex on Both Ends, 5/8" Long, Pack of 10
$11.53
Today
SS25S075 Support Documentation
SS25S075Customer Inspired! 1/4"-20 Stainless Steel Setscrew, 3/4" Long, Pack of 25
$6.53
Today
SS25S10 Support Documentation
SS25S101/4"-20 Stainless Steel Setscrew, 1" Long, Pack of 25
$8.29
Today

Vented, Vacuum-Compatible 1/4"-20 Setscrews

Item #LengthHexMaterialQuantity
SS25S050V1/2"1/8"316 Stainless Steel5
SS25S075V3/4"5

These setscrews are constructed from 316 stainless steel and chemically cleaned and prepared for vacuum applications before packaging. They also have a central Ø0.0625” (Ø1.6 mm) hole through the body of the screw to serve as a vent, allowing trapped gas to escape from a blind hole when a vacuum chamber is pumped down.

They are compatible directly out of the packaging with vacuum environments down to 10-6 Torr. With additional cleaning and processing, they can be used at even lower pressures, only limited by the outgassing rate of the stainless steel, which is 1.8 x 10-8 Torr-Liters/s/cm2. The material properties of the stainless steel and the cleaning methods that are completed by the end user should be used to determine the appropriateness of these products and materials in a specific vacuum system operating at pressures under 10-6 Torr.

These setscrews are packaged in double airtight bags for cleanroom and vacuum chamber applications. We also offer additional vacuum-compatible screws.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
SS25S050V Support Documentation
SS25S050V1/4"-20 Vacuum-Compatible Vented Setscrew, 316 Stainless, 1/2" Long, 5 Pack
$6.75
Today
SS25S075V Support Documentation
SS25S075V1/4"-20 Vacuum-Compatible Vented Setscrew, 316 Stainless, 3/4" Long, 5 Pack
$7.57
Today

M6 x 1.0 Stainless Steel Single- and Double-Ended Setscrews

Item # Length Hex Material Quantity
SS6MS12 12 mm 3 mm 18-8 Stainless Steel 25
SS6M16D 16 mm 3 mm on Both Ends 10
SS6MS20 20 mm 3 mm 25
SS6MS25 25 mm 3 mm 25

We also offer the HW-KIT2/M M6 cap screw kit and HW-KIT4/M M6 setscrew kit.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Metric Price Available / Ships
SS6MS12 Support Documentation
SS6MS12Customer Inspired! M6 x 1.0 Stainless Steel Setscrew, 12 mm Long, Pack of 25
$5.76
Today
SS6M16D Support Documentation
SS6M16DM6 x 1.0 Stainless Steel Setscrew with Hex on Both Ends, 16 mm Long, Pack of 10
$11.53
Today
SS6MS20 Support Documentation
SS6MS20Customer Inspired! M6 x 1.0 Stainless Steel Setscrew, 20 mm Long, Pack of 25
$6.53
Today
SS6MS25 Support Documentation
SS6MS25M6 x 1.0 Stainless Steel Setscrew, 25 mm Long, Pack of 25
$8.21
Today

Vented, Vacuum-Compatible M6 x 1.0 Setscrews

Item # Length Hex Material Quantity
SS6MS12V 12 mm 3 mm A4 Stainless Steel 5
SS6MS20V 20 mm 5

These setscrews are constructed from A4 stainless steel and chemically cleaned and prepared for vacuum applications before packaging. They also have a central Ø1.6 mm (Ø0.0625") hole through the body of the screw to serve as a vent, allowing trapped gas to escape from a blind hole when a vacuum chamber is pumped down.

They are compatible directly out of the packaging with vacuum environments down to 10-6 Torr. With additional cleaning and processing, they can be used at even lower pressures, only limited by the outgassing rate of the stainless steel, which is 1.8 x 10-8 Torr-Liters/s/cm2. The material properties of the stainless steel and the cleaning methods that are completed by the end user should be used to determine the appropriateness of these products and materials in a specific vacuum system operating at pressures under 10-6 Torr.

These setscrews are packaged in double airtight bags for cleanroom and vacuum chamber applications. We also offer additional vacuum-compatible screws.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Metric Price Available / Ships
SS6MS12V Support Documentation
SS6MS12VM6 x 1.0 Vacuum-Compatible Vented Setscrew, A4 Stainless, 12 mm Long, 5 Pack
$6.75
Today
SS6MS20V Support Documentation
SS6MS20VM6 x 1.0 Vacuum-Compatible Vented Setscrew, A4 Stainless, 20 mm Long, 5 Pack
$7.57
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, sold below. 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

Vacuum-Compatible 1/4"-20 and M6 x 1.0 Thumbscrews for Post Holders

Specifications
Vacuum Compatibility
as Packageda
>10-6 Torr
Materials2024-T3 Aluminum
Preparation and PackagingChemically Cleaned and Double Vacuum Bagged
Aluminum Outgassing Rate7.6 x 10-9 Torr-Liters/s/cm2
Maximum Torqueb28 in·lbs (3.2 N·m)
  • This is the pressure at which these components can be used with no additional processing. They can be used at even lower pressures with additional cleaning and processing.
  • Please note that we do not recommend using an L wrench to tighten the thumbscrew, as this may break off the screw head.
TS25HV Mechanical Drawing
TS25HV Drawing

These hex-locking thumbscrews are constructed from 2024-T3 aluminum and chemically cleaned and prepared for vacuum applications before packaging. They are compatible directly out of the packaging with vacuum environments down to 10-6 Torr. With additional cleaning and processing, they can be used at even lower pressures, only limited by the outgassing rate of the aluminum, which is 7.6 x 10-9 Torr-Liters/s/cm2. The material properties of the 2024-T3 aluminum and the cleaning methods that are completed by the end user should be used to determine the appropriateness of these products and materials in a specific vacuum system operating at pressures under 10-6 Torr.

These unanodized thumbscrews are packaged in double airtight bags for cleanroom and vacuum chamber applications.

The thumbscrews may be adjusted using our selection of balldrivers. The TS25HV has 1/4"-20 threads while the TS6HV/M has M6 x 1.0 threads for compatibility with our imperial or metric Vacuum-Compatible Ø1/2" Post Holders, respectively. We also offer additional vacuum-compatible Ø1/2" post system components.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Imperial Price Available / Ships
TS25HV Support Documentation
TS25HV3/16" Hex-Locking Thumbscrew, 1/4"-20 Thread, Vacuum Compatible
$6.75
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
TS6HV/M Support Documentation
TS6HV/M5 mm Hex-Locking Thumbscrew, M6 x 1.0 Thread, Vacuum Compatible
$6.75
Today
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