A: Current customers can call us directly at +44 (0) 1473 553540, or email their P.O. over to their designated sales representative, through the RFQ form, or contact form located on our website. We will then process and acknowledge receipt of your order with your scheduled delivery date.

New customers can also call us directly at +44 (0) 1473 553540, or through our website’s RFQ form or contact form. We will then process and acknowledge receipt of their inquiry with more information on how to proceed. We will need a P.O. from the new customer to process the order if accepted.

A: Yes! If custom-made parts are required, please supply a drawing when you enquire. This will help speed up the quote process.

A: We strive to ensure all parts arrive exactly as ordered. That being said, unforeseen issues can occur. If there is any problem with your order, please get in touch with us as soon as possible via email or telephone so we can resolve the issue.

A: 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.

A: Anything within a vacuum system that hurts, or inhibits, what you are trying to accomplish with the vacuum technology is considered a contaminant. There are two categories of contaminants – ones that are introduced into the system during normal operation and ones arising from the system components within.

A: Outgassing, also called offgassing, refers to the release of gas that has become trapped, frozen, dissolved, or absorbed in another material. If left in a high-vacuum system, the gas will eventually condense on sensitive equipment and other surfaces, which could potentially render the system inoperable. Outgassing is a common problem when creating, or maintaining, a clean high-vacuum environment. A significant source of contamination in HV and UHV systems is outgassing from water and volatile organic compounds.

A: In High Vacuum and Ultra High Vacuum systems, like materials can become cold-fused together—called galling—due to thermal expansion and the lack of moisture created by the vacuum. Screws threaded into blind tapped holes are commonly affected by galling, and components made of stainless steel are especially susceptible.

A: 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.

A: Vented screws are commonly used in various applications to facilitate pressure equalization in sealed enclosures, prevent gas or fluid buildup, prevent moisture buildup, improve airflow and ventilation, reduce noise or vibration, and more. They can be found in electronic enclosures, automotive parts, aerospace components, medical devices, and more.

Some typical applications for vented screws outside of vacuum applications include (but are not limited to):

  • Electronic enclosures: Vented screws can be used in electronic enclosures to prevent the buildup of pressure due to temperature changes and protect sensitive components from overheating.
  • Automotive parts: Vented screws can be used in automotive parts to equalize pressure and prevent moisture buildup in the engine and other critical systems.
  • Aerospace components: Vented screws are used in aerospace components to improve airflow and reduce pressure differentials that can cause structural damage.
  • Medical devices: Vented screws can be used in medical devices to equalize pressure and prevent contamination during sterilization.
  • Industrial equipment: Vented screws are used in industrial equipment where a hole in a screw can provide other uses besides vacuum or pressure. Equipment such as:
  • Sprayer nozzles (in some applications),
  • Suspension of lighting fixtures,
  • Facilitate fibers or cable pass-throughs,
  • Fabricate optical or pressure sensors,
  • And more.

In general, vented screws are useful in any application where pressure or vacuum must be controlled and airflow or gas exchange is necessary to prevent the buildup of moisture, heat, or other contaminants.