Searching for silicone Bronze, it's out there but expensive and shipping. Is Naval Brass the same as Tobin Bronze? Needing 5/8 rod. Many have accepted Nicol Bronze, Tobin Bronze. Tobin Bronze is an excellent rod for securing lead ballast. Anyway a good source of Naval Brass is available to me in the immediate area. Galveston Bay. I would suspect that Naval Brass to be a little softer, that would be advantages when working/threading. Does any one know? The Marine Industry Sales person say's its the same.