Overview Reviews Product Description HSSE - for toughness and increased wear resistance TiAlN coated - increases wear resistance, improves chip flow and reduces chip welding 15° Degree helix Designed to produce a 2B class of fit Shorter thread length for better chip evacuation and reduced contact with workpiece ANSI shank / ISO length Suitable for use on abrasive materials such as cast iron Clarkson Osborn Catalog Product Videos Custom Field Size 1/4-28 NF Flute length 13/16" Overall length 2-1/2" Package quantity/sold as each 1 Product Reviews Write a Review Write a Review × Clarkson-Osborn 1/4-28 NF HSSE White Ring Spiral Flute Tap CT60504 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *