Overview Reviews Product Description HSSE - for toughness and increased wear resistance TiAlN coated - increases wear resistance, improves chip flow and reduces chip welding Designed to produce a 2B class of fit ANSI shank / ISO length Spiral point forces the chips ahead of the tap - designed for through hole applications Designed for high tensile materials such as tool steel, high tensile steel, case hardening steel Clarkson Osborn Catalog Product Videos Custom Field Size 1/2"-20 NF Flute length 1-3/16" Overall length 3-3/8" Package quantity/sold as each 1 Product Reviews Write a Review Write a Review × Clarkson-Osborn 1/2"-20 NF HSSE Red Ring Spiral Point Tap CT52508 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *