Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2498575 found under Spool Engine Shaft by O T S I. The National Stock Number assigned to this part is 3120010317700, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 2498575.