Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number UCL4020-8 found under Sleeve And Bearing by Gkn Rockford Inc. The National Stock Number assigned to this part is 2520001035621, and the Federal Supply Class is 2520 Vehicular Power Transmission Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like UCL4020-8.