Carriage bolts are used in many industries in a multitude of applications, from high stress plow applications and in mining and rock quarry shaker screens to lower stress wood assemblies such as bolting together picnic tables. Carriage Bolts are perfect for assembling all types of material from wood, plastic, or hardened steel. The low-profile head ensures that there is no interference with objects as they slide over the head. The square neck locks the bolt in place during installation and prevents the bolts from loosening over time. Made from 18-8 stainless steel, these bolts have good chemical resistance and may be mildly magnetic.