Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number J640G12 found under Cap Tube by General Electric Co. The National Stock Number assigned to this part is 4730011826541, and the Federal Supply Class is 4730 Hose Pipe Tube Lubrication And Railing Fittings. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like J640G12.