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 6685-01-582-1436
NSN 5945-00-778-7292
NSN 5920-01-525-7644
NSN 5905-00-193-9997
NSN 5999-01-224-0244
NSN 5920-00-369-0923
NSN 6610-00-775-4236
NSN 6240-00-246-5060
NSN 5950-01-062-4936
NSN 5895-00-986-8671
NSN 6105-01-252-8847
NSN 6145-01-289-9267