Besly X1603 NS HS GH3 hand tap, 8-flute, high-speed steel (HSS), is a manual threading tool designed for cutting internal threads in metal workpieces. The model designation X1603 NS HS GH3 identifies the specific geometry and catalog line of this hand tap, with a thread size listed as 3-1/2-12. This eight-flute configuration supports efficient chip evacuation during hand tapping of larger-diameter holes, making it suitable for through-hole and blind-hole applications when used with a tap wrench. Built for durability in common machinist environments, this Besly hand tap is intended for precision, hand-cut threads in steel and other machinable metals.
