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 6685-01-131-8405
NSN 5950-01-646-7192
NSN 5990-01-287-1682
NSN 6240-01-578-1914
NSN 5985-00-549-8942
NSN 5910-01-500-3124
NSN 5925-01-586-6554
NSN 5905-00-914-0575
NSN 6130-00-111-1320
NSN 6130-00-635-9853
NSN 6620-01-398-8986
NSN 6110-01-113-4287