A fitting used with a union nut and thread piece to form a union.
NSN 6110-00-900-0673
NSN 6135-01-100-3593
NSN 6130-01-392-0596
NSN 5985-01-017-5140
NSN 5998-00-517-9170
NSN 5925-00-321-8040
NSN 6145-00-372-3713
NSN 6145-00-964-5194
NSN 5930-00-329-2778
NSN 6145-01-494-8591
NSN 5996-00-141-3945
NSN 5910-00-581-7132