Enhance the security of your fastening applications with this External Tooth Lock Washer. Crafted from sturdy steel in compliance with RoHS regulations, this washer features a precise DIN 6797A specification, ensuring reliable performance. With an outside diameter of 5.5 mm and a thickness of 0.4 mm, it fits effortlessly into M2.5 holes, boasting an inside diameter of 2.7 mm. Perfect for metric systems, this washer guarantees a tight grip, preventing loosening and promoting stability in any assembly.