Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ASTM A240 A240M found under Sheet Metal by American Society For Testing And. The National Stock Number assigned to this part is 9515005297814, and the Federal Supply Class is 9515 Plate Sheet Strip Foil And Leaf. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ASTM A240 A240M.