Screws

Inch Screws Catalog and CAD Library
Metric Screws Catalog and CAD Library
Shoulder Screws Catalog and CAD Library
UC Metric Screw Sizes
Center & Slot-Vented Screws
UC RediVacâ„¢ Nickel Plated Screws
RediVac™ Nickel Plated Screws

UC Components is the premier manufacturer of vented screws and fasteners for High Vacuum and Ultra High Vacuum equipment and other clean-critical applications. Our RediVac™ screws are designed to provide complete evacuation of trapped volumes of air during pump-down and eliminate “virtual leaks.”

Why A Vented Screw?

UC Components’ vented screws provide a path for trapped air to be pumped away from the bottoms, sides, and shoulders of blind-tapped holes. This allows for faster, more thorough pump-down of vacuum systems and eliminates virtual leaks* and potential contaminants found in these voids. RediVac™ vented screws promote higher system throughput and improved yield.

Our vented screws are available with center or slot (side) vents. Both vent types offer effective venting in any HV or UHV application. UC offers both inch and metric screw sizes, as well as non-vented screws for through-holes in HV and UHV systems and other applications.

UC Components’ screw inventory includes:

We also supply complementary washers, nuts, and O-rings for more complete system evacuation.

* Virtual leaks are volumes of trapped gas connected to the vacuum side of a chamber that cannot easily be pumped out due to restrictions of the paths between the trapped gas and the rest of the chamber.

Precision Cleaned Fasteners & Galling

All UC Components parts are precision cleaned and packaged in our certified Class 100 cleanroom prior to shipment. Our RediVac™ products are ready for immediate vacuum service in most applications. Precision cleaned parts can present a galling problem, however, making removal of the fastener extremely difficult and time consuming. To reduce the threat of galling, we offer numerous vacuum-stable solutions, including WS2 and MoS2 coatings, gold, silver, and nickel plated screws, and more.

Reusing A Screw

When tightening down a screw, small stress fractures occur; removal of the fastener causes additional stress. With repeated use, a fastener will eventually fail. Additionally, many vacuum processes leave behind materials which build up on the fastener, then flake off, causing particulate contamination and, subsequently, reduced yield. The savings gleaned from screw re-use are often not worth the ramifications of screw failure.

Request a quote on vented Inch or metric screw sizes for your application, or contact UC Components for more information.

Inch Screws Catalog and CAD Library

Metric Screws Catalog and CAD Library

Shoulder Screws Catalog and CAD Library