Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 428B found under Foil Metal by Minnesota Mining And Mfg Co. The National Stock Number assigned to this part is 9535009694573, and the Federal Supply Class is 9535 Plate Sheet Strip And Foil Nonferrous Base Metal. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 428B.