Ensure secure fastening with our External Tooth Lock Washer. Crafted from durable stainless steel, this washer features a .501-inch outside diameter and a .025-inch thickness, meeting ASME B18.21.1 specifications. Designed for a 1/4-inch hole size, it provides reliable locking action, with an inside diameter of .262 inches. Rest assured, this washer is RoHS compliant, making it an environmentally conscious choice for your assembly needs. Trust in its quality to enhance the stability and longevity of your projects.