Watertight Threaded Insert

A watertight threaded insert provides a threaded hole in thin materials and seals against moisture. It is used where a leak-proof joint is needed.

A watertight threaded insert gives a strong machine thread in thin or soft material while sealing against water and dust. It is set into a drilled or punched hole with a setting tool, and it takes a matching screw or bolt of the same thread. The insert suits outdoor equipment, enclosures and marine fittings where moisture is present.

These inserts are often made in stainless steel 304, stainless steel 316, or steel. Stainless steel 316 offers better corrosion resistance than 304, and steel is used for general purpose applications.

This is a general guide to checking this kind of part. It says nothing about any supplier's parts.

Ask for a mill test certificate for the material and a certificate of conformance for the sealing performance. On receipt, check the thread, the seal, and the insert for damage.