Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 630-339 found under Transformer Radio F by Johnson E F Co. The National Stock Number assigned to this part is 5950009965240, 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 630-339.