Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M56673 found under Winch Drum Power Operated by Marco Seattle Inc. The National Stock Number assigned to this part is 3950012243032, and the Federal Supply Class is 3950 Winches Hoists Cranes And Derricks. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like M56673.