Free-cutting steel zinc plated threaded straight knurled turned parts - This precision free-cutting steel zinc plating straight knurled threaded bolts & plugs produced by screw machine or CNC turning machine.

This custom precision high speed steel zinc plating straight knurled threaded bolts & plugs machined by CNC turning machine. Our factory produce various of free-cutting steel or mild steel inner & outer threaded turned parts and CNC turning parts for many industries.