The External Tooth Lock Washer is a vital component for securing fasteners in place. Made of durable 410 Stainless Steel, this washer is designed for long-lasting performance. With an outside diameter of .312 inches and a thickness of .02 inches, it provides reliable locking action. Its ASME B18.21.1 specification ensures high quality and compliance with industry standards. The washer features an external tooth design, offering enhanced grip and preventing loosening. With an inside diameter of .146 inches and a hole size of #6, it is perfect for various applications. Additionally, its RoHS compliance guarantees environmental responsibility. Trust in this washer for secure and efficient fastening solutions.