Flame King 3/8-in Brass Coupling Nut Natural Gas Quick Connect Item #: 361435 | Model #: 330805 Upc#014045308052 Replaces coupling socket between natural gas fuel source piping and appliance hose For use with natural gas systems not exceeding 1/2 psi or 3.45 kPa Intended for outdoor use with portable natural gas appliances Inlet is 3/8" female pipe thread