Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K120000042 found under Bearing Roller Journal by Kemp Real Time Laboratories. The National Stock Number assigned to this part is 3110011922072, 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 K120000042.