Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B130218-525K found under Ball Bearing by Transdigm Inc. The National Stock Number assigned to this part is 3110015959454, 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 B130218-525K.