Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number Q433CL found under Link Roller Chain by Lucas Western Inc. The National Stock Number assigned to this part is 3020002734264, 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 Q433CL.