Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TW52 found under Bearing Washer Thrust by Bunting Bearings Corp. The National Stock Number assigned to this part is 3120001153038, 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 TW52.