Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DD5-6 found under Coil Radio Frequency by Opt Industries Inc. The National Stock Number assigned to this part is 5950001322357, 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 DD5-6.