Enhance the security and stability of your fastening applications with our Internal Tooth Lockwasher. Crafted from durable steel with a protective zinc coating, this essential component ensures reliable performance in metric systems. Featuring an outside diameter of 5.5mm and a thickness of 0.4mm, it offers a perfect fit for M2.5 hole sizes. With an inside diameter of 2.7mm, it is designed for precise positioning. Rest assured, our lockwasher is fully compliant with RoHS regulations, guaranteeing both quality and environmental responsibility. Upgrade your assembly process with this indispensable component.