Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3A99009-103 found under Insulation Pipe Covering Thermal by Tighitco Inc. The National Stock Number assigned to this part is 1660000218423, and the Federal Supply Class is 1660 Aircraft Air Conditioning Heating And Pressurizing Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3A99009-103.