Dixon Boss GM23 Plated Iron Hose Fitting, Spud for GJ Boss Ground Joint Seal, 1-1/2" NPT Male Spud for connecting a ground joint stem to a ground joint fitting Connects to a female NPT threaded connection on one end and a wing nut threaded connection on the other Zinc-plated iron for strength, malleability and ductility, high magnetic permeability, and less corrosion than unplated iron Non-metallic polymer seat for chemical resistance Recommended for steam service up to 450 degrees F