A fitting used with a union nut and a tailpiece to form a union.
NSN 5925-01-173-7286
NSN 6145-00-879-0312
NSN 5960-00-187-0429
NSN 6145-01-292-2496
NSN 6620-01-121-0736
NSN 6130-01-128-9358
NSN 6145-01-157-2042
NSN 5990-01-463-2279
NSN 6130-01-446-7166
NSN 4140-01-513-0767
NSN 5965-01-503-0699
NSN 6620-01-242-9247