Eaton Aeroquip 2082-12S Steel Pipe Fitting, Hex Head Plug, 3/4" NPT Male National Pipe Thread (NPT) male hex head plug for plugging an NPT female end Male NPT threads to plug an NPT female end Steel for weldability and greater resistance to rust than iron Standard duty for light to medium pressure applications Society of Automotive Engineers (SAE)-compliant for SAE standards J512, J513, J514, J1926 and J1453 for functional requirements