Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number JAIL040S503UZ found under Resistor Variable N by Rockwell Automation Inc. The National Stock Number assigned to this part is 5905005015184, and the Federal Supply Class is 5905 Resistors. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like JAIL040S503UZ.