Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3088A931 found under Shim Assortment by R Cushman And Associatesinc. The National Stock Number assigned to this part is 5365015423560, 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 3088A931.