While not fasteners in the traditional sense, washers are often used in conjunction with bolts, nuts, and screws to improve their performance. Washers distribute the load of the fastener over a larger surface area, helping to prevent damage to the material being fastened and reducing the risk of loosening due to vibration. There are several types of washers, including flat washers, lock washers, and fender washers, each serving specific functions in various applications.

The emergence of the wall anchor butterfly is a sight to behold. As they unfurl their damp wings for the first time, they reveal the intricate designs that will captivate observers. These butterflies play an essential role in their ecosystems, primarily through pollination. While sipping nectar from flowers, wall anchor butterflies inadvertently transfer pollen from one bloom to another, facilitating plant reproduction. This symbiotic relationship highlights the interconnectedness of life; without such pollinators, many plants would struggle to reproduce, leading to a cascade of ecological consequences.

4. Load Capacity The load-bearing capacity of an M20 foundation bolt can vary depending on the grade of steel used. Common grades include 4.6, 8.8, and higher grades, with 8.8 indicating a high-strength bolt capable of bearing significant tensile and shear loads.