Secure your fasteners with ease using this Internal Tooth Lockwasher. Crafted from durable stainless steel, it guarantees reliable performance in a variety of applications. With an outside diameter of 7mm and a thickness of .5mm, it provides a snug fit to prevent loosening. Designed for metric systems, it features an inside diameter of 3.7mm and a hole size of M3.5, ensuring compatibility with standard fasteners. Rest assured, this lockwasher is RoHS compliant, making it a sustainable and eco-friendly choice for your projects. Trust in its quality to keep your components securely in place.