Screw bolt kits are types of fastener combinationsthat contain different quantities of screws and bolts used for fastening, fixing and assembling purposes.Screws are fasteners that thread directly into the substrate materials without using nuts on the other sides. Bolts are threaded through openings and secured with nuts on the rear side. What are screw bolt kits used for?The screws and bolts in these kits are useful where you need two components to join together, fasten to other surfaces or fix onto products and materials. The kits may contain speciality screws and bolts designed for specific purposes based on the materials they need to penetrate such as wood, steel, plastic, concrete and sheet metal. Types of screw bolt kitsScrews and bolts come in many different sizes. The kits available can be categorised by drive type and by base material. Drive type refers to the insertion mechanism, i.e. the type of driver needed to insert the screw into the surfaces. Typical options available include slotted, hexed or crossed. Base material refers to the material that the screws and bolts are constructed from. These may include steel, plastic, nylon or brass.