External Teeth Lock Washers

External teeth lock washers are made from carbon steel or stainless steel, which makes them tough and resistant to rust. Some types are heat-treated to get harder (around HRC 40-50), so their teeth grip better. Stainless steel versions (like SS 304 or 316) work well in wet or chemical environments, while zinc-plated ones have extra protection against rust. The material has a springy quality, so the washer can bend a bit under pressure but still keep steady tension. They’re stamped with precision to make sure all the teeth are the same shape and size, so every batch works the same. Being both tough and flexible, these washers are good for both heavy-duty machines and precise equipment setups.

Application

The external teeth lock washer is essential in car engines, airplane parts, and industrial machines where vibration is common. It keeps fasteners secure in HVAC systems, electrical boxes, and hydraulic pumps. DIYers use it when assembling furniture, while manufacturers put it in conveyor belts and robotic arms. It works well for securing flanges, bearings, and motor mounts because it can adapt to different setups. In renewable energy, it holds solar panel brackets and wind turbine parts in place. Whether in wet marine environments or high-temperature areas, this washer keeps fasteners stable for a long time across many different conditions.

Features

Q: How does the external teeth lock washer prevent bolt loosening under vibration?

A: The external teeth lock washer has radial teeth that bite into the surface it’s attached to and the bolt head or nut, creating friction to resist movement. When there’s vibration, the washer’s springy tension soaks up small motions, while the teeth lock into the surfaces to stop them from spinning. This two-part system,friction from the teeth plus mechanical locking,makes it work better than flat washers in situations with shifting loads.

But in really shaky environments, like with heavy machinery, using it along with thread-locking glue or a serrated flange bolt can help even more. Just be careful not to over-tighten it, since that can squish the teeth flat and make the external teeth lock washer less effective.