Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number QL503 found under Floodlight Electric by Hubbell Ltd. The National Stock Number assigned to this part is 6230001830288, and the Federal Supply Class is 6230 Electric Portable And Hand Lighting Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like QL503.