Overview Reviews Product Description HSS General purpose British standard pipe (BSP) - 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 1-1/4"-11 BSPF Outer diameter 3" Package quantity/sold as each 1 Product Reviews Write a Review Write a Review × Clarkson-Osborn 1-1/4"-11 BSPF x 3" HSS Round Die TA28580 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *