Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 821-0008 found under Screw Cap Socket He by Cummins Power Generation Inc. The National Stock Number assigned to this part is 5305010503793, and the Federal Supply Class is 5305 Screws. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 821-0008.