American Standard faucets are a common brand of faucet found in many home kitchens. Sometimes the faucet might feel loose where it connects to the sink. Over time and use, the securing nuts under the sink work loose causing the faucet to wobble. Tightening an American Standard faucet depends on the model and age of the faucet. Many newer models now use additional screws to help keep the faucet secure to the sink.
Go under the sink and locate the lock nut securing the American Standard faucet to the sink. If you have a single handle faucet, the lock nut will be directly under the faucet handle and spout around a threaded stem. If you have a double handle faucet, there are lock nuts under each handle and in the center under the spout.
Loosen the three screws in the lock nut with a Phillips-head screwdriver, if the face of the lock nut has screws. Turn each screw counterclockwise three revolutions. Many newer models of American Standard faucets have screws to assist keeping the faucet tight to the sink. Older faucets do not have the extra screws.
Turn the lock nut clockwise with your fingers. The lock nut threads tighter as you turn tightening the faucet to the sink. If you have a double handle faucet, tighten the lock nut in the center first and tighten the lock nut under each handle.
Tighten the three screws evenly on the lock nut if you have a newer model American Standard faucet.