Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6477-20 found under Cover Seal Support And Bearing R by Eastern Gear Corp. The National Stock Number assigned to this part is 3020011193820, 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 6477-20.