The structure of custom fasteners mainly includes the following elements:
Thread elements: The basic elements of threaded fasteners include tooth type, diameter, thread count, pitch and lead, and hand direction. The tooth type refers to the profile shape of the thread on the section through the thread axis; the diameter includes the major diameter, minor diameter and median diameter; the thread count indicates the number of threads formed along the spiral line; the pitch is the axial distance between the two corresponding points of two adjacent teeth on the median diameter line; the hand direction determines the rotation direction of the thread.
Material selection: The material selection of fasteners has an important impact on their performance. Common materials include carbon steel, stainless steel (such as 304, 316L, etc.), alloy steel, etc. Different materials are suitable for different application scenarios. For example, stainless steel is suitable for corrosive environments, while carbon steel is suitable for general industrial applications.
Heat treatment and mechanical properties: The heat treatment and mechanical property requirements of fasteners are also important factors to consider when customizing. For example, some applications may require high-strength fasteners, which need to be achieved through appropriate heat treatment.
Application scenarios: Fasteners are widely used in various industries, including energy, electronics, machinery, chemicals, etc. Different application scenarios have different requirements for fasteners. For example, offshore platform bolts need to have excellent resistance to chloride ion corrosion, while bridge steel structures require high dynamic load adaptability.
Common types: Common fastener types include bolts, studs, screws, nuts, self-tapping screws, washers, pins, rivets, etc. Each type has its specific application scenario and connection method.
