A fitting with pipe threads having a female connection inside of a male connection, used in conjunction with another fitting, to connect in the same line, two pipes of different sizes.
NSN 6130-01-146-3772
NSN 5985-01-608-4446
NSN 5925-01-086-3310
NSN 5835-00-198-4936
NSN 6135-00-851-8575
NSN 6150-00-276-0083
NSN 6610-01-527-1650
NSN 6645-00-731-8171
NSN 6135-00-087-5300
NSN 5960-01-201-6316
NSN 2925-00-510-0760
NSN 6105-01-284-1943