Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PR-16 43-5 found under Relay by Murphy Elevator Co The. The National Stock Number assigned to this part is 3960010169327, and the Federal Supply Class is 3960 Freight Elevators. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PR-16 43-5.