Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GB511DU3-3 found under Screw Machine by Sps Technologies Inc. The National Stock Number assigned to this part is 5305000616465, 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 GB511DU3-3.