Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CSVA5-4 ITEM 4A 2 1 2IN found under Bearing Washer Thrust by Rockwell International Corp. The National Stock Number assigned to this part is 3120012185783, 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 CSVA5-4 ITEM 4A 2 1 2IN.