Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B831-0210-48 found under Screw Shoulder by Electric Boat Corporation. The National Stock Number assigned to this part is 5305015043835, 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 B831-0210-48.