Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 12Z00-542BY99LINKSLG found under Chain Conveyor by Barber Greene Co. The National Stock Number assigned to this part is 3020009220143, 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 12Z00-542BY99LINKSLG.