Threaded Insert

A threaded insert is a metal or plastic fitting placed into a hole to provide strong threads in soft material. It can be installed with a tool or moulded in place.

A threaded insert gives a strong machine thread in soft material such as plastic, aluminium or wood. It is set into a drilled or moulded hole, and it then takes a screw or bolt of the matching thread.

Threaded inserts are often made in steel, alloy steel, stainless steel, brass, plastic, or nickel alloys such as 400 nickel. Stainless steel grades resist corrosion, while brass and plastic suit light loads.

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 if you need to confirm the material and dimensions. On receipt, check the thread, the external form, and that the insert sits correctly in a test hole.