Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5 40678 19 found under Nozzle Assembly Aer by The Boeing Company. The National Stock Number assigned to this part is 1680006566170, and the Federal Supply Class is 1680 Miscellaneous Aircraft Accessories And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5 40678 19.