A fitting used with a union nut and thread piece to form a union.
NSN 5996-01-261-4262
NSN 5990-01-652-7373
NSN 2925-00-833-9466
NSN 6135-01-187-4382
NSN 5920-01-174-8540
NSN 5930-01-147-5229
NSN 5999-01-421-1811
NSN 6685-01-590-0393
NSN 5985-00-721-1909
NSN 6320-01-573-6490
NSN 5920-01-461-6141
NSN 5910-01-479-1481