Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MI-1-2-3 found under Screw Cap Socket Head by Motion Industries Inc. The National Stock Number assigned to this part is 5305015283695, 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 MI-1-2-3.