This is unique custom 304 stainless steel M6×19.5mm set screw.

It is manufacturing by multi-station cold heading machine, then using specialized drilling hole machine to drilling a holes in the head, the last step is thread rolling. Because the drilling hole speed is slower than cold heading forming, that we are through 4 units deep hole drilling machine at a time.

This M6 set screw order quantity approximately 50,000piecse in every month, we supplied to a BBQ grill manufacturer in the United States.