B 3868-86 Standard name: Technical conditions for welded carbide spiral end mills for processing light alloys. This technical condition applies to HB3860-86 ~ HB3867-86, welded carbide spiral end mills for processing light alloys on CNC milling machines. .
HB 3868-1986 history
1986HB 3868-1986 Technical conditions for helical milling cutter with welded hard alloy for machining light alloy