A fitting used with a union nut and thread piece to form a union.
NSN 2925-01-364-7926
NSN 5910-01-075-6495
NSN 6685-00-190-5955
NSN 6220-00-842-6897
NSN 5999-00-270-2276
NSN 6320-01-525-4789
NSN 6650-00-736-8456
NSN 5965-00-125-6984
NSN 5998-01-283-2875
NSN 5990-01-177-2838
NSN 6320-01-429-9871
NSN 5945-01-378-7268