Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A3954 55585 found under Insulator Bushing by Selex Es Ltd. The National Stock Number assigned to this part is 5970004531805, and the Federal Supply Class is 5970 Electrical Insulators And Insulating Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like A3954 55585.