Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 05-507963 found under Resistor Variable W by Lucas Aerospace Power Equipment. The National Stock Number assigned to this part is 5905001377942, 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 05-507963.