Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 81N2572 TYPE LSW-111-586U found under Lampholder by D A Lubricant Co Inc. The National Stock Number assigned to this part is 6250014353894, 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 81N2572 TYPE LSW-111-586U.