Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K1517 found under Gear Drive Motion by The Electric Tachometer Corp. The National Stock Number assigned to this part is 3020011190684, and the Federal Supply Class is 3020 Gear Pulley Sprocket And Transmission Chain. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like K1517.