Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RE1089-503 found under Resistor Adjustable by Airadio Co Inc. The National Stock Number assigned to this part is 5905002843338, 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 RE1089-503.