Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NKX 30Z IR. 25X30X20 found under Bearing Needle Ball by Ina Bearing Co Inc. The National Stock Number assigned to this part is 3110010589595, 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 NKX 30Z IR. 25X30X20.