Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AMS 5121 found under Strip Metal by Society Of Automotive Engineers Inc. The National Stock Number assigned to this part is 9515000631908, 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 AMS 5121.