A fitting used with a union nut and thread piece to form a union.
NSN 5930-00-350-6008
NSN 5930-01-159-0925
NSN 6320-01-544-6447
NSN 5915-01-068-9447
NSN 6320-01-399-6177
NSN 5905-01-444-4045
NSN 5910-00-050-9123
NSN 5855-00-494-9581
NSN 6610-00-680-8325
NSN 6220-01-359-3993
NSN 6240-01-128-2476
NSN 6240-00-868-2102