Enhance the security of your fastening applications with this External Tooth Lock Washer. Crafted from durable 316 Stainless Steel, it offers reliable protection against loosening and vibration. Compliant with DIN 6797A standards, this washer features a precise .5 mm thickness and an outside diameter of 8 mm, with an inside diameter of 4.3 mm. Designed for M4 hole sizes, it ensures a secure fit for various industrial and mechanical uses. Rest assured, this washer is RoHS compliant, meeting environmental standards for safe and sustainable operations. Upgrade your hardware with this essential locking component for peace of mind in your assembly projects.