Enhance the security of your fastening applications with our External Tooth Lock Washer. Crafted from durable 410 Stainless Steel, this washer ensures reliable performance in demanding environments. With an ASME B18.21.1 specification, it meets stringent industry standards for quality and precision. Featuring an outside diameter of .682 inches and a thickness of .036 inches, it provides a perfect fit for 3/8-inch hole sizes. The internal diameter of .391 inches guarantees efficient fastening, while the external tooth design offers enhanced grip and stability. Rest assured, this washer is RoHS compliant, making it an environmentally friendly choice for your projects.Upgrade your fastening solutions with the superior strength and reliability of our External Tooth Lock Washer.