Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HFHFA673C found under Shaft Spline Drive by Harris Graphics Corp. The National Stock Number assigned to this part is 3010007383896, 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 HFHFA673C.