Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CF-B187-J found under Coil Radio Frequency by Carbon Graphite Group Inc The. The National Stock Number assigned to this part is 5950005115780, 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 CF-B187-J.