Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K6643231 PIECE 5 found under Stud Bottoming by General Electric Co. The National Stock Number assigned to this part is 5307010299214, 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 K6643231 PIECE 5.