Bolts can be used for fastening, connecting, and installing various mechanical equipment; this dataset includes primary raw materials, auxiliary materials, and energy used in the production process, but infrastructure such as production equipment and factory construction is not included within the dataset boundary; the life cycle inventory is compiled from data sourced from multiple references; the bolt manufacturing process includes raw material preparation, spheroidizing annealing, scale removal, cold drawing, cold heading, thread machining, heat treatment, surface treatment, inspection, and other procedures.