Thick washers is really important in lots of projects with bolts. They distribute the load from bolt more even and protect the surface from getting damage. When using black flat washers it keep everything tight and secure better. If your building something or fixing, knowing about thick washers can makes job easier.
Benefits
When talking about size, knowing right measurements is essential for project. First step measure diameter of your bolt. For example if bolt is 1/2 inch, look for flat washer spring washer that fit that size. Then think about thickness of washer. Thicker washer support heavy loads better, thinner one suit for light applications. Also consider thickness of materials your working with. If bolting two thick wood pieces, thick washer distribute pressure even. But if on thin metal sheet, thinner washer may prevent bending or warp.