A fitting used with a union nut and thread piece to form a union.
NSN 5925-01-650-5714
NSN 6620-00-514-4097
NSN 6135-00-100-8890
NSN 5975-01-451-1580
NSN 6145-00-345-2565
NSN 2925-01-484-8556
NSN 6685-01-658-9815
NSN 5945-01-146-4529
NSN 6110-01-024-9428
NSN 6650-01-237-4689
NSN 6105-01-574-6423
NSN 5915-00-909-8102