RWMA Stud Electrodes are designed for projection welding screws, bolts or pins whether they pass through the sheet or are directly attached to the sheet metal. The stud hole is lined with an insulated bushing with high wear resistance. The RWMA Stud Electrodes mount with a standard 5RW taper.

A refractory metal face is made of RWMA Class 11 (75% tungsten, 25% copper) (ASTM 702 C1D) is brazed onto the base material. This face is typically used for welding at higher pressure and heat common with projection welding.