Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number P-1657 found under Air Structure by Chemfab New York Inc. The National Stock Number assigned to this part is 5410010998466, and the Federal Supply Class is 5410 Prefabricated And Portable Buildings. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like P-1657.