SteelSteel <35 HRC<35 HRC SteelSteel 36–48 HRC36–48 HRC PH and FerriticPH and Ferritic Stainless SteelStainless Steel <35 HRC<35 HRC PH and FerriticPH and Ferritic Stainless SteelStainless Steel >35 HRC>35 HRC Stainless SteelStainless Steel Cast IronCast Iron WroughtWrought AluminiumAluminium CastCast AluminiumAluminium Copper,Copper, Copper AlloysCopper Alloys Iron BasedIron Based Cobalt BasedCobalt Based Nickel BasedNickel Based Titanium AlloysTitanium Alloys Hardened SteelsHardened Steels 49–55 HRC49–55 HRC Hardened SteelsHardened Steels 56–68 HRC56–68 HRC High-Performance Thread Mills High-Performance Thread Mills Selection Guide • Solid Carbide Thread Mills P M K N S H 1, 2, 3,4, 6, 7 5, 9,10, 11 12, 13.1 13.2 14.1, 14.2, 15, 16,14.3, 14.4 17, 18, 192021 22, 23,24, 25 26, 27,28 31, 32 33, 34,35 36 37 38.1, 38.2,40.1, 40.2,41.1 39.1,41.2 recommended cutting page(s) parameters               Y69 Y77               Y71 Y77      Y73 Y77             Y75 Y78       Y76 Y78 P M K N S H 1, 2, 3,4, 6, 7 5, 9,10, 11 12, 13.1 13.2 14.1, 14.2, 15, 16,14.3, 14.4 17, 18, 192021 22, 23,24, 25 26, 27,28 31, 32 33, 34,35 36 37 38.1, 38.2,40.1, 40.2,41.1 39.1,41.2 recommended cutting page(s) parameters               Y70 Y77      Y72 Y77             Y74 Y78 widia.com Y67