Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DG20-12 found under Plate Chain Link by Emerson Power Transmission Corpo. The National Stock Number assigned to this part is 3020003593572, 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 DG20-12.