Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 20-0003-1Y found under Light Fi Ture Instr by Grimes Aerospace Company. The National Stock Number assigned to this part is 6220008059296, and the Federal Supply Class is 6220 Electric Vehicular Lights And Fixtures. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 20-0003-1Y.