A fitting used with a union nut and thread piece to form a union.
NSN 5996-01-437-6577
NSN 6610-01-069-1156
NSN 5975-00-706-7087
NSN 5895-00-144-8162
NSN 6105-01-362-4651
NSN 6610-01-539-9084
NSN 5935-01-519-8750
NSN 5950-00-463-9662
NSN 6110-00-620-0330
NSN 5975-01-328-1503
NSN 5998-00-305-4087
NSN 5930-01-624-7165