Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LD-E0042-004 found under Fixture Lighting by Raytheon E Systems Inc. The National Stock Number assigned to this part is 6210013570249, and the Federal Supply Class is 6210 Indoor And Outdoor Electrical Lighting Fixtures. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like LD-E0042-004.