Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 21W04-0000 found under Terminal Board by Limco Airepair Inc. The National Stock Number assigned to this part is 5940013155175, and the Federal Supply Class is 5940 Lugs Terminals And Terminal Strips. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 21W04-0000.