Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BB1-0001-019 found under Lampholder by Bruce Aerospace Inc. The National Stock Number assigned to this part is 6250013327807, 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 BB1-0001-019.