Overview Reviews Product Description HSS General purpose - 55° degree thread form This thread is not tapered (parallel) and needs a gasket or seal to be gas/liquid tight. Used to create external pipe and conduit threads. Clarkson Osborn Catalog Product Videos Custom Field Size 1/4"-19 BSPF Outer diameter 1-5/16" Package quantity/sold as each 1 Product Reviews Write a Review Write a Review × Clarkson-Osborn 1/4"-19 BSPF x 1-5/16" HSS Round Die TA28116 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *