Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S46-12161REV2 found under Bearing Set by Radio Frequency Systems Inc. The National Stock Number assigned to this part is 3120003085161, 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 S46-12161REV2.