Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B643991 found under Cable Assembly Spec by Man Diesel And Turbo France. The National Stock Number assigned to this part is 6150144491273, and the Federal Supply Class is 6150 Miscellaneous Electric Power And Distribution Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B643991.