Secure your fastenings with our External Tooth Lock Washer. This indispensable component, crafted from durable steel and coated with zinc for enhanced longevity, offers reliable locking and sealing. With a precise DIN 6797A specification, it guarantees a perfect fit for M4 hole sizes. Featuring an outside diameter of 8mm and a slim thickness of .5mm, it's designed for efficiency without compromising on strength. The internal diameter of 4.3mm ensures compatibility with a variety of bolts and screws, while its RoHS compliance underscores our commitment to environmental responsibility. Trust in this essential washer to provide the stability and security your projects demand.