Square Neck Screws

Square neck screws, also known as carriage bolts or coach bolts, are a type of fastener commonly used in woodworking and construction. These screws have a square neck just below the head, which prevents them from turning when the nut is tightened. This design makes them ideal for applications where the bolt must remain stationary while the nut is tightened, such as attaching a hinge to a door or a latch to a gate.