Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number XL1019 found under Lampholder by Hughey And Phillips Inc. The National Stock Number assigned to this part is 6250001091091, and the Federal Supply Class is 6250 Ballasts Lampholders And Starters. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like XL1019.