Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number JH10 51 found under Clutch Half Positiv by Sigma Tek Inc. The National Stock Number assigned to this part is 2520001444547, 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 JH10 51.