Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RE4-390UJ found under Resistor Fixed Wire by Union Technique Electricite. The National Stock Number assigned to this part is 5905144674891, 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 RE4-390UJ.