Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SK-3672 found under Clutch Positive Non by Insinger Machine Company The. The National Stock Number assigned to this part is 3010014453235, and the Federal Supply Class is 3010 Torque Converters And Speed Changers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SK-3672.