Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LS4-AO found under Contactor Magnetic by Electric Power Equipment Co. The National Stock Number assigned to this part is 6110014171473, and the Federal Supply Class is 6110 Electrical Control Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like LS4-AO.