Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 39G20 found under Gear Bevel by Ambac International Corporation. The National Stock Number assigned to this part is 3020003669844, 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 39G20.