Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 00239 found under Resistor Variable Wire Wound Pre by Rolls Royce Marine Electrical. The National Stock Number assigned to this part is 5905001857276, 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 00239.