Steel shell
An item composed of one or more materials, molded, compressed, and/or baked into a rigid covering of irregular shapes and sizes. it is designed to cover air ducts and/or air duct fittings used in air conditioning, heating, cooling, pressurizing and de-icing systems to restrict the dissipation of heat. it may completely or partially encase the item for which designed. it may be furnished with or without fillers, cement, and/or separate or attached accessories for installation, (excluding flexible air duct covering and rigid pipe and pipe fitting coverings used in construction and building materials). Excludes insulation blanket, thermal, aircraft; insulation pipe fitting covering, thermal; and insulation sleeving, thermal.
Classification: Other parts of airplanes or helicopters for use in military aircraft (excludes propellers, rotors, undercarriages, and parts thereof)
NSN 6135-01-514-9327
NSN 6320-01-399-6177
NSN 6130-01-630-4840
NSN 6620-01-067-9285
NSN 6645-01-045-4088
NSN 6685-00-700-1668
NSN 6320-00-242-3300
NSN 5930-00-936-5361
NSN 6130-01-438-8571
NSN 5925-01-188-7630
NSN 6105-00-786-7104
NSN 6150-01-553-5790