A fitting used with a union nut and thread piece to form a union.
NSN 6320-01-219-5174
NSN 5930-01-093-3424
NSN 5996-01-216-0702
NSN 5920-00-581-6126
NSN 5835-01-373-9506
NSN 6620-01-039-5468
NSN 6620-01-623-7266
NSN 5855-01-406-2606
NSN 5960-00-850-1277
NSN 5855-01-261-5495
NSN 6105-01-502-9759
NSN 6610-01-651-7925