Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 117-0520 found under Resistor Variable Wire Wound Pre by M K Products Inc. The National Stock Number assigned to this part is 5905013040504, 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 117-0520.