Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5149540 found under Bearing Rotor Shaft by Mtu America Incorporated. The National Stock Number assigned to this part is 3120011858490, 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 5149540.