Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S23405-503 found under Universal Joint Geared Nonvehicu by Bw Elliott Manufacturing Co Llc. The National Stock Number assigned to this part is 3010007528347, and the Federal Supply Class is 3010 Torque Converters And Speed Changers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like S23405-503.