Application Guide P M K N S H Carbon Steels AlloyList No.Low10101018Med.10351045HighSteelsDie10654140Steels4340Stainless SteelsCastIron30040017-4 PHAluminumNickelAlloyTitaniumHardened Steels60617075CastingInconel6Al4V(30 HRC)~35HRC35-4545-50HRCHRC50-70HRC Spiral Pointed Taps 142 122 917 11118 S111 Straight Fluted Taps 16615 16610 311 341 329 359 319 10059 10061 349 356 10051 11051 305 10052 11052 10053 good best WWW.OSGTOOL.COM Illustrated Index/Application Guide 351