Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RC20 4703J found under Resistor Fixed Comp by Stackpole Corp The. The National Stock Number assigned to this part is 5905008258113, 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 RC20 4703J.