Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3TARZZ-144-156-4 found under Bearing Ball Duplex by Mpb Corporation. The National Stock Number assigned to this part is 3110011865522, 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 3TARZZ-144-156-4.