A fitting used with a union nut and thread piece to form a union.
NSN 6105-00-575-9720
NSN 5990-00-172-9260
NSN 2925-01-553-0181
NSN 6220-01-201-8216
NSN 5996-00-205-2933
NSN 6685-00-043-0749
NSN 5990-01-414-7618
NSN 6645-00-574-9712
NSN 6135-01-156-4627
NSN 6130-01-287-1424
NSN 6685-01-010-3234
NSN 6145-00-117-8861