Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number Y7813A1 found under Gear Bevel by Lucas Western Inc. The National Stock Number assigned to this part is 3020002948811, 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 Y7813A1.