Whitworth Internal & External Thread File – Goliath Filon premium quality Thread Restorer Files are manufactured in France Thread Files are a hardened steel four-sided bar with different thread pitches cut into the body and can be used for both external and internal threads. BSW (Whitworth) Thread Files have a 55º thread angle and are suitable for repairing damaged BSW and BSF threads. The depth of cut is self-limiting making thread restoration quick and simple. TPI: 10, 11, 12, 14, 16, 18, 20, 24 TPI
