Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 82-5700 found under Head Pressure Outlet by Marshall Excelsior Co. The National Stock Number assigned to this part is 3655000722215, and the Federal Supply Class is 3655 Gas Generating And Dispensing Systems Fixed Or Mobile. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 82-5700.