BSP 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. BSP Thread Files have a 55º thread angle and are suitable for repairing damaged British Standard Pipe threads. The depth of cut is self-limiting making thread restoration quick and simple. TPI: 28, 19, 14, 11 TPI
