Use dowel pins to align and/or join components in machinery, construction and furniture-making. Dowel pins are short cylindrical rods made of metal, plastic or wood. A steel dowel pin helps align machine components during the assembly process to ensure a consistent result. These pins are also used in masonry to join stone and concrete. Wood dowel pins are employed to create dowel joints in furniture, as well as for shelving pegs. For precise alignment of metal and wood components, choose your dowel pins from Grainger.