Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ANSI C78.2-78(F90T17 CW PH found under Lamp Fluorescent by American National Standards Inst. The National Stock Number assigned to this part is 6240002477358, and the Federal Supply Class is 6240 Electric Lamps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ANSI C78.2-78(F90T17 CW PH.