Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 40-666-317 found under Semiconductor Devic by Ge Aviation Systems Llc. The National Stock Number assigned to this part is 5961001277842, and the Federal Supply Class is 5961 Semiconductor Devices And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 40-666-317.