A bariatric clamp may include substrate members overmolded in polymer forming first and second elongated portions, a bight portion having a flexible hinge, a fastener portion, and an engagement portion for retaining the clamp in a closed position to partition the stomach. A method for installing may include creating an opening in a patient's abdominal cavity to access the stomach, removing tissue connected to the stomach adjacent areas the clamp is to be positioned, positioning the clamp in an open position wherein first ends of the first and second elongated portions are open relative to one another, inserting the clamp into the abdominal cavity in the open position and the first and second elongated portions of the clamp separately pass through the opening in the abdominal cavity, positioning the first and second elongated portions adjacent first and second sides of the stomach, and closing the clamp to partition the stomach.