Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 11121A found under Lampholder by Canberra Industries Inc. The National Stock Number assigned to this part is 6250004072894, 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 11121A.