A fitting used with a union nut and a tailpiece to form a union.
NSN 5915-00-259-3772
NSN 5945-01-459-0163
NSN 5905-01-067-8164
NSN 5985-01-620-9359
NSN 6240-01-485-3116
NSN 5925-01-401-5314
NSN 5930-00-014-6536
NSN 5990-00-681-2789
NSN 4140-00-182-1454
NSN 6240-01-478-8488
NSN 5930-00-430-6539
NSN 5990-01-559-0578