Closed End Threaded Insert

A closed end threaded insert is a rivet nut with a sealed base that stops liquid or debris passing through the fixing. It provides a threaded hole in thin sheet or tube.

A closed end threaded insert gives a sealed threaded hole in thin sheet, so liquids and gases cannot pass through the joint. It takes a setting tool that pulls the insert and upsets the body. A large flange insert spreads load over a wider area, while a low profile insert sits close to the surface.

This kind of insert is often made from steel, stainless steel or aluminium. Steel gives high strength. Stainless steel resists corrosion.

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

Ask for a certificate of conformance. On receipt, check the closed end is intact and the thread is clean. Confirm the thread size and material match the order.