Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CB21-602M found under Screw Machine by G T A A Llc. The National Stock Number assigned to this part is 5305002075661, 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 CB21-602M.