Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number WL142TYPE6-9 found under Lampholder by Federal Specifications. The National Stock Number assigned to this part is 6250004940645, 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 WL142TYPE6-9.