These spring washers are precision-made for construction sites and renovation projects, delivering stable fastening on joints that experience movement or vibration. - Targeted for professional builders, renovation specialists, enthusiasts, and tool repair personnel who need reliable performance to improve fastening security. - Precision manufacturing provides exact dimensions and easy installation, ensuring compatibility with a wide range of brands and models. - A durable and versatile essential accessory that enhances your toolkit for long-term reliability and adaptability. 2-3 practical use scenarios: - On construction sites, use these washers to secure bolts in framing and equipment mounts where vibration can loosen fasteners. - During renovations, apply them when mounting cabinets, fixtures, hinges, or hardware to achieve a tight, stable fit. - In tool repair and maintenance, replace worn washers to restore clamping force and extend the life of tools and equipment.