General description Conical Union 1 inch BSP Female - Female A4 (T316) marine Grade Stainless Steel - Parallel Threads (BSPP / G Thread) is a British Standard Pipe Fitting designed for reliable connections in marine and industrial applications. Technical specifications Material: A4 (T316) marine Grade Stainless Steel Thread Type: Female / Female Standard: EN 10226-1 (EX ISO 7-1) Taper: 1:16 on diameter Angle of threads: 55° Maximum operating pressure: 150 lbs = 10.34 Bar PN 10