Of the family of special washers, and more particularly of lock washers, these washers are recognisable by their cut in length. They are used to strengthen a fastener and for their braking ability. Washers are of great importance in DIY, and some, such as the Grower, are essential to prevent accidental loosening due to shock or vibration.

What is a lock washer?

A Grower washer is a so-called elastic washer. It is a washer that acts by anchoring in a part, which will allow the screw to be braked. Thanks to its cut part, similar to a small spring, it anchors itself in the part and maintains a solid and durable fastening. This feature can be increased if a beak is present. Grower washers also reduce the tension and stiffness of the screw due to their elasticity. They will, therefore, increase the efficiency of the bolt. The Grower washer is available in various sizes and diameters, so that it can be used in different places. It is designed to prevent a bolt from loosening after assembly, and thus the fastener from coming loose. It is of course designed to allow tightening.

When to use a Grower spring washer?

While a conventional flat washer is used to increase the contact surface, a Grower washer is mainly used when there is a risk of loosening, i.e. in the presence of vibrations and shocks. It is more efficient and effective and is regularly used in mechanical engineering, e.g. for engines which are subject to vibration, or in industry. Compared to the same torque as a conventional bolt, the elastic deformation is greater with this washer.

How do I use it?

When using a lock washer, it is important to pay attention to the direction of installation. Generally, the braking face is fixed in the direction of the nut. The cut part will fit into the nut and into the part to be screwed thanks to its elasticity. Of course, the appropriate accessory, spanner or pliers, is essential to achieve a good fixing. A little advice: do not overtighten the fastener to avoid damaging it.