Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 539947 found under Disk Assembly Clutc by West Salem Machinery Company. The National Stock Number assigned to this part is 2520011560378, and the Federal Supply Class is 2520 Vehicular Power Transmission Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 539947.