Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B19668ISSUEB found under Transformer Radio F by Strux Corp. The National Stock Number assigned to this part is 5950007226996, 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 B19668ISSUEB.