Square head plugs allow you to seal off female threaded fittings or pipe. General uses for this product are for transporting lubricant, oil, grease, LP gases and fuel or to create your own DIY projects. Generally used for lubricant, oil, grease, LP gas, natural gases (nitrogen, oxygen, etc.), steam and diesel 150 lb class malleable fittings Relative softness of metal helps provide a sure seal This fitting works up to 500 PSI at 150F Threaded ends meeting with ANSI/ASME B1.20.1 standards Meet ASTM and ASME standards Sub Type: Plug Type: Fitting Diameter (End 1): 1/2-in Weight (lbs.): 0.08 Code Approvals: Malleable Fittings: ASME B16.3; Threads: SME B1.20.1 Common Use: Natural gas and oil Connection Type (End 1): Male Material: Iron Maximum Pressure: 300 PSI Maximum Working Temperature (Fahrenheit): 185 Minimum Working Temperature (Fahrenheit): -29 Package Quantity: 1 Warranty: 1-year limited CA Residents: Prop 65 Warning(s): Yes UNSPSC: 40171500