A fitting used with a union nut and thread piece to form a union.
NSN 5910-01-144-2233
NSN 5895-01-014-5849
NSN 5945-01-437-1249
NSN 5950-00-810-3428
NSN 6645-01-058-3817
NSN 5945-01-254-2633
NSN 5975-01-444-2406
NSN 5920-01-353-0089
NSN 5910-00-279-1981
NSN 7035-01-182-1086
NSN 5975-01-584-4646
NSN 5895-01-010-1742