Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CB4000C5MCR20M found under Stud Bonded by Click Bond Inc. The National Stock Number assigned to this part is 5307014469675, and the Federal Supply Class is 5307 Studs. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CB4000C5MCR20M.