A fitting used with a union nut and thread piece to form a union.
NSN 6150-00-717-1596
NSN 5985-00-100-1296
NSN 6240-01-240-1596
NSN 6145-00-968-4439
NSN 6105-00-210-2962
NSN 5960-01-219-0524
NSN 5965-00-263-6436
NSN 5996-00-231-9322
NSN 6685-00-373-1940
NSN 2925-01-131-0473
NSN 5855-01-396-8734
NSN 5999-01-063-3160