Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 72KH13 found under Screw Thrust Front by Mack Trucks Inc. The National Stock Number assigned to this part is 2520006925902, 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 72KH13.