Thread forming tap cold-forms threads in through holes and blind holes without producing chips * Chromium nitride (CrN) coating reduces likelihood of buildup at the cutting edge and improves edge sharpness * Powdered-metal steel for performance approaching that of solid carbide tools, with the toughness and shock-resistance of high-speed steel * No lubricant grooves, for interrupted holes and through holes in thin sections * Modified bottoming chamfer has additional length to reduce chip load, add tool life, and permit higher tapping speeds