Helical Insert

A helical insert is a wire thread insert that repairs or strengthens a threaded hole. It is often used when a thread in a softer material has stripped or when a stronger thread is needed.

A helical insert repairs or reinforces a tapped hole in a softer material. It takes a matching installation tool and a tang break-off tool where the insert has a tang. The host hole is drilled and tapped to the insert's own size before fitting.

Plain finish means no coating is applied. Zinc plating is a coating that gives some corrosion resistance and is often used for indoor or dry conditions.

This kind of insert is often made in stainless steel. Stainless steel gives good corrosion resistance and strength. It can be used in many environments.

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 or a mill test certificate if you need to verify the material. On receipt, check the insert for correct thread size and length. Look for damage such as bent coils or burrs.