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Products HomeVacuum-Compatible Screws
- Vented Cap Screws, Vented Setscrews, and Thumbscrews for Vacuum Use
- All Screws are Shipped Double Vacuum Bagged
- Constructed of 316 and A4 Stainless Steel or 2024-T3 Aluminum
SS25S075V
1/4"-20 Vented Setscrews
SH25S063V
1/4"-20 Vented Cap Screws
TS25HV
Vacuum-Compatible
Thumbscrews
Please Wait
Click to EnlargeVented screws allow trapped gases to escape while under vacuum.
Additional Vacuum-Compatible Components
Many of our other Optomechanical Components can be special ordered for vacuum use. Contact Tech Support for details.
Features
- Vented 1/4"-20 and M6 Cap Screws and Setscrews
- Vacuum-Compatible Thumbscrews
- All Components Usable with 10-6 Torr Environments Directly Out of the Packaging
- Compatible with Lower Pressures with Additional User Processing
- All Components are Shipped Double Vacuum Bagged for Cleanroom Use
This page features vacuum-compatible versions of our most popular screws. These screws are fabricated from specially selected grades of stainless steel and aluminum for vacuum and cleanroom use. All components are packaged in double airtight bags for cleanroom and vacuum chamber applications. The cross section of a vented screw to the right illustrates the benefits of vented screws when used within a vacuum chamber.
Vacuum Compatibility Information
Our vacuum-compatible screws are 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 or stainless steel (see the Vacuum Specs tab or the Specs tables below). The material properties of the aluminum or stainless steel and the cleaning methods completed by the end user should be used to determine the appropriateness of these products and materials in a specific vacuum system.
We also offer other optomechanical components which may be used in vacuum applications. Many of our Polaris™ Mirror Mounts are vacuum compatible. We also offer Unanodized Aluminum Breadboards, which may be used in vacuum applications after undergoing cleaning and processing by the end user.
Vacuum Compatibility Specs
| Item | Vented Cap Screws & Washers | Vented Setscrews | Thumbscrews |
|---|---|---|---|
| Vacuum Compatibility as Packageda | >10-6 Torr | ||
| Materials | 316 Stainless Steel (Imperial) A4 Stainless Steel (Metric) | 2024-T3 Aluminum | |
| Preparation and Packaging | Chemically Cleaned and Double Vacuum Bagged | ||
| Aluminum / Stainless Steel Outgassing Rate at 20 °C | 1.8 x 10-8 Torr-Liters/s/cm2 | 7.6 x 10-9 Torr-Liters/s/cm2 | |
| Posted Comments: | |
ojanguren
(posted 2018-05-04 07:55:49.787) Dear Sirs,
Is it posible to purchase Vented cap screws made of Titanium?
Regards,
Inigo llamb
(posted 2018-05-04 05:42:13.0) Hello Inigo, thank you for contacting Thorlabs. We cannot offer titanium vented cap screws unfortunately. Perhaps a different vendor, such as Vacom in Germany, may be able to offer such titanium screws. |
Zoom| Vacuum Compatibility Specifications | |
|---|---|
| Vacuum Compatibility as Packageda | >10-6 Torr |
| Materials | 316 Stainless Steel (Imperial) A4 Stainless Steel (Metric) |
| Preparation and Packaging | Chemically Cleaned and Double Vacuum Bagged |
| Stainless Steel Outgassing Rate at 20 °C | 1.8 x 10-8 Torr-Liters/s/cm2 |
Click to Enlarge
These Cap Screws have a Central Ø0.0625" (Ø1.6 mm) Vent
- 1/4"-20 and M6 x 1.0 Cap Screws with Vents for Vacuum Applications
- Constructed of 316 or A4 Stainless Steel
- Vacuum-Compatible Design (>10-6 Torr)
- Double Vacuum Bagged for Cleanroom Environments
- We Also Offer Standard Cap Screws in a Variety of Sizes
These cap screws and washers are constructed from 316 or A4 stainless steel. They 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.
| Item # | Length | Hex | Material | Quantity |
|---|---|---|---|---|
| SH25S038V | 3/8" (9.5 mm) | 3/16" | 316 Stainless Steel | 5 |
| SH25S050V | 1/2" (12.7 mm) | 5 | ||
| SH25S063V | 5/8" (15.9 mm) | 5 | ||
| SH25S075V | 3/4" (19.1 mm) | 5 | ||
| SH25S100V | 1" (25.4 mm) | 5 | ||
| SH6MS10V | 10 mm (0.39") | 5 mm | A4 Stainless Steel | 5 |
| SH6MS12V | 12 mm (0.47") | 5 | ||
| SH6MS16V | 16 mm (0.63") | 5 | ||
| SH6MS20V | 20 mm (0.79") | 5 | ||
| SH6MS25V | 25 mm (0.98") | 5 | ||
| W25S050V | 1/4" Washer (M6 Compatible) | 316 Stainless Steel | 25 | |
Zoom| Vacuum Compatibility Specifications | |
|---|---|
| Vacuum Compatibility as Packageda | >10-6 Torr |
| Materials | 316 Stainless Steel (Imperial) A4 Stainless Steel (Metric) |
| Preparation and Packaging | Chemically Cleaned and Double Vacuum Bagged |
| Stainless Steel Outgassing Rate at 20 °C | 1.8 x 10-8 Torr-Liters/s/cm2 |
Click to Enlarge
These Setscrews Have a Central Ø0.0625" (Ø1.6 mm) Vent
- 1/4"-20 and M6 x 1.0 Setscrews with Vents for Vacuum Applications
- Constructed of 316 or A4 Stainless Steel
- Vacuum-Compatible Design (>10-6 Torr)
- Double Vacuum Bagged for Cleanroom Environments
- We Also Offer Standard Setscrews in a Variety of Sizes
These setscrews are constructed from 316 or A4 stainless steel. They 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.
| Item # | Length | Hex | Material | Quantity |
|---|---|---|---|---|
| SS25S050V | 1/2" | 1/8" | 316 Stainless Steel | 5 |
| SS25S075V | 3/4" | 5 | ||
| SS6MS12V | 12 mm | 3 mm | A4 Stainless Steel | 5 |
| SS6MS20V | 20 mm | 5 |
Zoom| Specifications | |
|---|---|
| Vacuum Compatibility as Packageda |
>10-6 Torr |
| Materials | 2024-T3 Aluminum |
| Preparation and Packaging |
Chemically Cleaned and Double Vacuum Bagged |
| Aluminum Outgassing Rate at 20 °C |
7.6 x 10-9 Torr-Liters/s/cm2 |
| Maximum Torque | 28 in·lbs (3.2 N·m) |
The TS25HV and TS6HV/M are 1/4"-20 or M6 x 1.0-threaded for compatibility with our imperial or metric Vacuum-Compatible Ø1/2" Post Holders, respectively. Please note that we do not recommend using an L wrench hex key to tighten these thumbscrews, as this may break off the screw head. The recommended maximum torque is 28 in·lbs (3.2 N·m). We also offer standard spring-loaded thumbscrews.
TS25HV Drawing
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