Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3890AS003956-01 found under Shim by General Atomics Aeronautical Sys Inc. The National Stock Number assigned to this part is 5365016661587, 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 3890AS003956-01.