Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 023739 found under Clutch Plate Outer by Alto Products Corp. The National Stock Number assigned to this part is 2520004089068, 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 023739.