Super Duplex S32550 Bolts offered by us, can be used for many different applications that include fastening wood, steel, and other construction materials for projects such as docks, bridges, highway structures, and buildings. These bolts are large bolts with a six-sided head used to fasten wood to wood, or metal to wood. Super Duplex S32550 Bolts are often used to make a bolted joint. These bolts are also commonly used as headed anchor bolts. They are very cost effective in nature.