Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 667 0210 020 found under Transformer Audio F by Vernitron Corp. The National Stock Number assigned to this part is 5950010922992, 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 667 0210 020.