Hex Weld Nut

A hex weld nut is a nut with a hexagonal shape and projections for welding. It is welded to a metal part to provide a threaded hole.

A hex weld nut is welded to a metal sheet or plate so that a bolt can be turned into it from the other side. It is often projection welded, where small projections on the nut face melt and fuse to the sheet. The nut takes a bolt of the same thread and class, and the joint usually needs no washer under the nut.

Hex weld nuts are often made in low carbon steel. This material is easy to weld and form.

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 to confirm the dimensions and material. On receipt, check the thread and the weld projections. Check that the nut sits flat against the mating surface.