Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S9257-25B0563 found under Bushing Sleeve by Rolls Royce Canada Ltd. The National Stock Number assigned to this part is 3120010535649, 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 S9257-25B0563.