Overview Reviews Product Description HSS These dies are suitable for cutting new threads Used for threading studs, bolts and rods that require external threads Clarkson Osborn Catalog Product Videos Custom Field Size 1/2"-20 NF Outer diameter 1.100" Package quantity/sold as each 1 Product Reviews Write a Review Write a Review × Clarkson-Osborn 1/2"-20 NF HSS Hex Die Nut TA81308 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *