Used on sentinel class fast response cutter b (frc-b). npt threaded to hose barb, straight tailpiece next higher assembly 7.9 ft boat npt 1st end thread series
3a 1st end thread class 20 1st end thread quantity per inch fitting assembly, flared tube end to modified screen end bushing is made of 2024-T4 aluminum per qq-a-225 anodize body surface treated flared unjf 1st end thread series