Besly GL-8106 M54-914-664 Hand Tap

Besly GL-8106 M54-914-664 Hand Tap is a four-flute, high-speed steel hand tapping tool designed for cutting internal threads with a 2-3/4"-8 UNS-3B size. Identified by the GL-8106 and M54-914-664 part numbers, this Besly hand tap is intended for manual use with a tap wrench to form precise internal threads in holes prepared for UNS-3B class fasteners. The four-flute geometry helps with chip evacuation and steady cutting, while the high-speed steel construction provides durability for reuse in typical metalworking tasks. This model is part of Besly’s hand-tap line and creates female threads that match the corresponding UNS-3B threads, enabling reliable assembly with compatible fasteners. Use in maintenance, repair, and fabrication where a 2.75 inch major diameter and 8 TPI UNS thread are required.