Compatibility: They are standard universal headboard fittings with screw holes in the head/footboard of the bed. These M8 headboard screws will stay in place without constantly tightening or moving the headboard. Strong Hold: Sturdy plastic head with stainless steel screws, durable and stable, not easy to wear and tear. The headboard screws hold your headboard firmly, making it more comfortable to sit and read, watch TV or relax in bed. Special Design: Unlike fancy washers and screws - the headboard screws and washer fasteners are molded in one piece, so there is less chance of scratching the wall. They help keep the headboard secure and upright. Perfect for securing your headboard. Easy Installation: Screw the headboard brackets into the headboard. Find the pre-drilled holes in the box spring bed, screw the bed screws into the hole and slide the headboard onto the stud screw. Tighten the screw to fix the headboard firmly. Task completed. Note: The data is all measured manually,