Weld nut

These nuts have a long threaded cylinder with a large circular base to make welding easy.

[1] Tab base nuts are designed for spot welding on flat workpieces.

The retainer is welded to the work piece while the nut is allowed to float.

[4] Single Tab Weld Nuts Single button projection weld nut for use on heavier gage materials.

Aftermarket products such as zinc plating are sometimes used to coat low carbon weld nuts giving it the rust resistant properties of stainless steel at a substantial cost saving.