Stainless Steel Washers
When working with nuts and bolts, often you'll find stainless steel, rubber or zinc-plated washers located in between the nut and the bolt. It spreads the load over a greater surface area, providing users with a tighter fit and less chance that the screw will loosen. What's more, washers are a way to increase space and can act as a protector for the exterior of the item you pair it with. When using this way, users should avoid locking and spring washers, which may dig into the material and damage it.Types
Basically, there are three categories in which washers might fall: plain, spring, and locking. For everyday use, a plain washer works adequately, but if you need to prevent fastening or loosening due to vibrations, a spring washer is a better bet. Locking washers prevent the fastening device from unscrewing by using its serrated edge to ‘’lock’’ it into place. All locking washers are spring washers, but not all spring washers are locking washers.Storage
To make the job run more smoothly, it's a good idea to separate your washers by size, type and material composition. Put the rubber washers stored in a separate container from the stainless steel ones. The size of the nut and bolts you are using determines the size of the washer. For example, a 20 mm screw needs a 20 mm washer.Buy in Bulk
One way to ensure you always have the proper tool when you need it is to buy in bulk. Washers typically come in a package either all the same size or a variety of sizes for multiple tasks. If buying to keep on hand, then a box with various sizes works better than one of all the same size; you never know what size screw the next job will require.