A fitting used with a union nut and a tailpiece to form a union.
NSN 5930-01-134-5038
NSN 5905-00-649-0425
NSN 6135-01-435-6503
NSN 5996-01-423-5630
NSN 6320-01-335-8336
NSN 6620-01-386-5543
NSN 5975-01-328-8968
NSN 5950-01-256-4094
NSN 6105-01-643-6024
NSN 5996-00-715-5615
NSN 6645-00-967-3429
NSN 6645-01-324-1956