Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6444664-00 found under Plate Friction by Duffnorton Co Inc. The National Stock Number assigned to this part is 3950010239989, 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 6444664-00.