The nickel head locking screw is an improved version based on the original hexagonal locking screw. The exposed parts after the improvement are designed to prevent rusting, thereby avoiding rusting on the surface and inside of the equipment.

The hexagonal flange hexagonal locking screw is an upgraded product of the triangular locking screw. Due to the addition of three curved edges, it fits the steel plate hole diameter more closely, resulting in better locking effect and better anti-loosening effect. A nylon washer is placed at the contact area with the steel plate to prevent rainwater from entering the equipment interior, thus avoiding rusting at the equipment and screw connection points as well as inside the equipment. It is an ideal matching product for various commercial air conditioners, household appliances, and various industrial equipment.