A fitting used with a union nut and thread piece to form a union.
NSN 5960-00-177-2953
NSN 4140-01-411-6666
NSN 5999-01-448-4898
NSN 5960-01-004-5483
NSN 6645-01-445-2841
NSN 6135-00-833-9909
NSN 5998-01-087-5155
NSN 5930-00-174-7746
NSN 5975-00-624-6949
NSN 5905-01-350-3146
NSN 5915-01-370-1213
NSN 6685-01-101-0261