Precision made of superior quality, H13 type, thermal, shock-resisting hotwork die steelHot-forged heads provide uniform grain flow, higher tensile strengthCore hardness 40-45 HRCOutside diameter nitrided to 65-74 HRC hardness and finished to minimize wearHeads annealed for easy machiningCenterless ground D diameterSpecial Pins, Sleeves and Blades Quote Request Form