Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number T4B1018 found under Seat Bearing by Timken Aerospace Inc. The National Stock Number assigned to this part is 3110009921066, 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 T4B1018.