Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 20346 found under Bearing Sleeve by Mwm Murphy Diesel Co. The National Stock Number assigned to this part is 3120004476886, 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 20346.