08IR 18 NPT INSERT GRADE IC228

IR/L National Pipe Taper (NPT) Internal Threading Inserts

IR/L - ground periphery and rake
IRB - with a chipformer and peripherally ground
IRM - with a chipformer.

IC228 PVD COATED (P30-P50 K25-K40) For alloy steels, aluminum alloys, austenitic stainless steel, carbon steel, cast steel, copper alloys and Exotic alloys. Suitable for roughing and semi-roughing in low speed / high feed and interrupted cut conditions. High resistance to mechanical & thermal shock.