Bolts in the Bolts sub-category in the Bolts, Screws & Cap Screws category from GoVets are ideal for completing or working on projects. Carriage bolts are a type of fastener with a round head and a square neck that prevents the bolt from turning when the nut is tightened. They are used to fasten wood and metal parts together and are available in a variety of sizes and materials. Shop today to find the perfect carriage bolt for your project.