This 1/4" Brass Acme Nut is a perfect replacement fitting on a propane regulator. With easy-adjust knob, this replacement part will serve your grill well. The connection works with 4.25 - 40 lbs. LP gas cylinders with Type 1 connection and has a maximum working pressure of 250 psi. With this exact replacement, you achieve a tight fit and the thread sealant is included to ensure a leak tight seal and not waste gas from a slow leak.