A fitting used with a union nut and thread piece to form a union.
NSN 5996-00-172-7553
NSN 5999-01-324-6433
NSN 5905-01-304-9428
NSN 7035-00-020-2227
NSN 5920-01-220-3037
NSN 4140-00-943-7434
NSN 5910-00-218-1114
NSN 6620-01-270-7232
NSN 5999-00-903-0488
NSN 5895-01-113-7224
NSN 6135-01-387-0754
NSN 5965-00-961-1627