Ensure secure fastening with this External Tooth Lock Washer. Made of durable Stainless Steel, it provides reliable resistance to corrosion and wear. Designed to ASME B18.21.1 specifications, it guarantees high quality and performance. With an outside diameter of .467 inches and a thickness of .024 inches, it offers precise fitting for your #12 hole. The external tooth design enhances grip and prevents loosening, making it ideal for a wide range of applications. ROHS compliant for environmental responsibility.