Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 146T6198-4 found under Trolley Ay by The Boeing Company. The National Stock Number assigned to this part is 3110016532407, 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 146T6198-4.