HY-PRO® DIN is the original "Do it All" premium spiral point tap for a wide range of materials. Features HSSE material Spiral Point Bright, Steam Oxide surface treatment TiCN coating Inch & Metric Benefits Increased wear resistance For through hole applications S/O increases mechanical lubricity Improves wear resistance for extended tap life Complete Offering Medium & High Carbon Steels, Alloy Steels Cast iron, Low Carbon Steel, Die Steel, SS, Hardened Steel up to ~35 HrC