Anti-Turn Head Threaded Insert

A threaded insert provides durable threads in a softer parent material. The anti-turn head resists rotation during installation and under load.

An anti-turn head threaded insert fits into a drilled or moulded hole in a panel or casting. Its head bites into the material to stop the insert turning when a bolt or screw is fitted. It takes a matching bolt or screw of the same thread, and a washer can be added under the head.

This kind of insert is often made in stainless steel 304 for corrosion resistance, or in steel for general use. The choice depends on the parent material and the environment.

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 and check the thread form and head shape on receipt. Confirm the material grade matches the order.