A fitting used with a union nut and thread piece to form a union.
NSN 5835-01-432-1277
NSN 5905-01-475-6541
NSN 5945-01-399-7647
NSN 6220-00-051-4198
NSN 5945-00-871-5860
NSN 5985-00-950-9489
NSN 5905-01-494-2468
NSN 6650-01-272-1912
NSN 5960-01-238-5046
NSN 5920-01-013-8594
NSN 6240-01-435-4854
NSN 5930-00-578-6967