Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 686-1-02158 found under Transformer Assembl by Selex Es Limited. The National Stock Number assigned to this part is 5950013272596, and the Federal Supply Class is 5950 Coils And Transformers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 686-1-02158.