Hardware items are essential components of any construction project. They include BOLTS, nails, and SCREWS, which are all used to join two or more pieces of material together. BOLTS are cylindrical fasteners with a head at one end and a threaded shaft at the other, and are usually secured with a nut. Nails are thin metal rods with a pointed tip and a flat head, and are driven into materials with a hammer. SCREWS are similar to BOLTS, but have a helical ridge along the shaft, allowing them to be driven into materials with a screwdriver. All three of these hardware items are essential for any construction project.