A fitting used with a union nut and thread piece to form a union.
NSN 5975-01-422-3800
NSN 6645-00-946-8588
NSN 6135-01-419-2794
NSN 5998-00-606-8813
NSN 5996-00-428-8130
NSN 6610-00-391-7888
NSN 5855-00-688-9954
NSN 5975-01-579-0676
NSN 6240-00-121-7628
NSN 5945-00-081-9140
NSN 5945-01-496-7857
NSN 4140-01-301-4651