External Tooth Lock Washers feature teeth positioned around the outer edge, designed to dig into the surface material and offer superior resistance to loosening caused by vibration or torque. These washers are particularly effective when used with large-headed screws such as pan head, round head, binding head, and washer head screws, where the screw head maintains firm contact with the washer’s teeth for a secure grip.

At Adfast Component, we offer hex washers in both metric and imperial sizes, manufactured through precision stamping or laser cutting from high-quality plate materials. To enhance durability and corrosion resistance, we also provide a variety of protective coatings tailored to suit different environments and applications.