Enhance the security of your fastening applications with this External Tooth Lock Washer. Crafted from durable 316 Stainless Steel, it offers reliable performance in demanding environments. With an ASME B18.21.1 specification, you can trust its quality and precision. The washer features an outside diameter of .402 inches and a thickness of .021 inches, ensuring a snug fit. Its #10 hole size and .199-inch inside diameter make it suitable for various hardware setups. Rest assured of its environmental compliance with RoHS certification. Upgrade your fastening solution with this essential component.