Brownells High-Speed Steel Cutting Kits For Lathes – 1/2" Threader

Tooling kits include hardened steel toolholders and high speed steel inserts for turning, threading, profiling, and cut-off work. Inserts are T-15 High Speed Steel (HSS) hardened to Rc 65-67, then finish ground on all sides. They deliver excellent slow speed performance, precision interrupted cuts, and a smooth finish on stainless steel, Inconel, Monel, exotic metals, and plastics. Square shank toolholders and boring bars are CNC machined from 4140/4142 steel bar stock, hardened to Rc 48-50, and then black oxide coated to resist corrosion. Includes a 6" long bar with offset end pocket for cutting ID and OD threads; plus, two high-speed steel inserts, TNMC-32NV and TPMC-32NV. Mfg: Brownells SPECS: Bar – .500" shank, 6.0" OAL, end pocket is offset for ID and OD thread, 1.375" minimum bore diameter, 60deg. Inserts – 11deg positive, .250 IC, .125 thick, .110 hole, .146 top opening, .015 radius. T-15 HSS, one TNMC-32NV and one TPMC-32NV. Includes two MS-1153 screws and T