Steel per mil-s-6721, comp 321
A hollow body used to transport air to various parts of the aircraft for the purpose of heating, cooling, pressurizing, de-icing, and the like. It may include flange(s), bracket(s), and the like for mounting purposes. Excludes pipes used in aircraft exhaust systems and pipes used in non-aircraft applications. Excludes pipe, exhaust and pipe, air conditioning-heating.
Classification: Other parts of airplanes or helicopters for use in military aircraft (excludes propellers, rotors, undercarriages, and parts thereof)
NSN 6620-00-189-0967
NSN 6650-01-231-9545
NSN 5910-01-580-2716
NSN 6135-01-009-4929
NSN 6105-01-044-7321
NSN 6110-01-573-5013
NSN 5975-01-513-1629
NSN 5960-00-796-1664
NSN 5835-00-419-0575
NSN 6610-01-462-5980
NSN 6650-01-233-1484
NSN 7035-01-168-3596