Tapping Insert

A tapping insert is a threaded metal insert that cuts its own thread when installed into a drilled hole. It provides strong threads in softer materials.

A tapping insert provides strong threads in soft materials. It cuts its own thread when driven into a drilled hole. A bolt or screw of the same thread then fits it.

This kind of insert is usually made in steel or stainless steel. Some are made in brass for electrical or non-magnetic use. The material affects corrosion resistance and load capacity.

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 for material and dimensions. On receipt, check the external and internal threads for damage. Check that the insert is free of burrs and that the driving feature is intact.