Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GGG-W-641 found under Screwdriver Attachment Socket Wr by Federal Specifications. The National Stock Number assigned to this part is 5120000624681, and the Federal Supply Class is 5120 Hand Tools Nonedged Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like GGG-W-641.