Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K33992 found under Lampholder by Beta Labs Inc. The National Stock Number assigned to this part is 6250000230690, 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 K33992.