Ensure secure fastening with our Internal Tooth Lockwasher. Crafted from durable 316 Stainless Steel, this washer guarantees reliable performance in demanding environments. With an outside diameter of .501 inches and a thickness of .025 inches, it provides a perfect fit for your 1/4-inch hole size applications. The internal teeth grip tightly for enhanced stability, while the RoHS compliance underscores our commitment to environmental responsibility. Trust in this essential component for your assembly needs.