Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 50540 found under Packing Assembly by Crown Coachworks Inc. The National Stock Number assigned to this part is 5330011079441, and the Federal Supply Class is 5330 Packing And Gasket Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 50540.