Fasteners are used to secure and fasten materials like wood, metal, plastic, and concrete. They come in a number of sorts and sizes, including metric and inch, and include nuts and bolts, threaded rods, structural bolts, machine screws, wedge anchors, washers, rivets, and more. To assist you select the correct fastener supplies for your work, fastener manuals and tech sheets contain information such as torque values and fastener specifications.