This tapered screw is used along with the ID jaw on the AMWFH-WP clamping module for pneumatic clamping on the inside shape of a workpiece. This tapered screw is pulled down when air is supplied to the module turbo port, which causes the sections of the jaw to expand and clamp on the internal form of the workpiece. Made from electroless nickle-plated 4135 steel, quenched and tempered.