Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SC-169 found under Gear Assembly Speed by Dutch Valley Supply Co. The National Stock Number assigned to this part is 3010013289161, 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 SC-169.