Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 0109-4580 found under Resistor Variable W by E And R Electronics Inc. The National Stock Number assigned to this part is 5905005094235, 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 0109-4580.