Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KH12-B found under Bearing Ball Linear Motion by Schaeffler Group Usa Inc. The National Stock Number assigned to this part is 3110012372702, and the Federal Supply Class is 3110 Bearings Antifriction Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like KH12-B.