A fitting used with a union nut and thread piece to form a union.
NSN 6150-01-237-4898
NSN 5985-01-232-4684
NSN 4140-01-634-0330
NSN 5996-00-820-4703
NSN 5990-01-212-2037
NSN 6240-01-316-0488
NSN 6220-00-961-0783
NSN 5996-01-323-5269
NSN 2925-01-360-3575
NSN 6145-00-500-5679
NSN 5905-00-408-8671
NSN 5915-00-564-2490