Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 170N found under Insert Flexible Coupling by Magnaloy Coupling Co Div Of. The National Stock Number assigned to this part is 3010013851257, 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 170N.