Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EF0-X003-2321-USB3 found under Fixture Lighting by Energy Focus Inc. The National Stock Number assigned to this part is 6210016321973, 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 EF0-X003-2321-USB3.