Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1502-28-70-20 found under Shim by Ahearn And Soper Co Inc. The National Stock Number assigned to this part is 5365012286234, and the Federal Supply Class is 5365 Bushings Rings Shims And Spacers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1502-28-70-20.