Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 115-288 found under Ball Steel by Blue Jay Manufacturing Co. The National Stock Number assigned to this part is 3110011792661, 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 115-288.