Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 051131 found under Bearing Washer Thrust by Big Joe Mfg Co. The National Stock Number assigned to this part is 3120001914038, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 051131.