Fasteners are manufactured to a variety of standards covering dimensions, tolerances, materials, mechanical properties, testing procedures, coating, and other manufacturing processes. We at TorqBolt intend to provide guidance for the proper selection of materials and manufacturing processes for the oil and gas industry where materials selection and key manufacturing processes are critical barriers to the failure of fasteners. Understanding the failure modes and their associated barriers is critical to the proper selection of fasteners for the specific environmental conditions where they will be installed.