Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 8P20R20 AND 8P20L20 found under Gear Bevel by Arrow Gear Company Inc. The National Stock Number assigned to this part is 3020012322522, 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 8P20R20 AND 8P20L20.