Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 311869 found under Bellows Pressure by Hydro Aire Inc. The National Stock Number assigned to this part is 1680003975932, and the Federal Supply Class is 1680 Miscellaneous Aircraft Accessories And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 311869.