Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 906 605-4000 found under Pulley Groove by Rotzler Gmbh Co Kg. The National Stock Number assigned to this part is 3020123439256, and the Federal Supply Class is 3020 Gear Pulley Sprocket And Transmission Chain. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 906 605-4000.