Internal External Tooth Lock Washer

Wondering where to use lock washers? Washers are used to distribute the load of a bolt, and lock washers are a unique product that also helps prevent nuts and bolts from turning or slipping after installation. There are different types and style of lock washer, but most either feature a star shape with teeth circling the outside or look like a traditional washer with ends that are uneven.

What Are Lock Washers Used For?

If you're new to fasteners, especially this particular type, you might wonder where to use lock washers. In many cases, lock washers are used on parts, equipment and machines that vibrate. In these cases, using a traditional washer might allow the vibration to loosen the connection over time. When you use a lock washer, however, the locking action helps prevent the vibration from loosening fasteners. Whether you’re a contractor, a service professional or a do-it-yourself enthusiast, it’s always a good idea to have a range of different lock washers on hand for upcoming projects.

Finish

Teeth on the outside edge of these washers bite into the screw head and joint for a tight grip. Use with fasteners that have heads large enough to make contact with the teeth, such as pan, button, and binding head screws.

Zinc-plated steel washers are corrosion resistant in wet environments.

18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.

316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.