A fitting used with a union nut and thread piece to form a union.
NSN 5910-01-351-4667
NSN 6150-00-453-6158
NSN 5945-00-960-5882
NSN 5998-01-313-2034
NSN 6610-00-862-3597
NSN 5965-01-556-9520
NSN 6135-01-429-9029
NSN 5990-00-163-4173
NSN 7035-01-566-0375
NSN 5915-01-281-3636
NSN 6610-01-047-7245
NSN 6135-00-500-2082