M3 double-headed screw nut stud, hexagonal copper stud, connecting stud, spacing stud, battery case isolation stud

The core advantages of copper single-pass studs (also known as copper single-head studs or copper isolation studs) are "excellent conductivity and thermal conductivity, soft material for easy processing, isolation and insulation compatibility, and rust and corrosion resistance",

1. With high electrical and thermal conductivity, pure copper or brass materials, suitable for electronic/thermal dissipation scenarios, exhibit conductivity (approximately 58S/m) and thermal conductivity (approximately 401W/(m·K)) that far surpass those of stainless steel and carbon steel. In electronic devices, they can fulfill the dual functions of "fastening" and "electrical/thermal conduction": In electrical conduction scenarios, they are used for conductive connections between circuit boards and metal components (such as grounding studs) to avoid heating issues caused by excessive contact resistance. In thermal dissipation scenarios, they are assembled around heat-generating components such as chips and power modules to assist in heat transfer and enhance thermal dissipation efficiency in conjunction with heat sinks. They are suitable for high-temperature applications such as power equipment and automotive electronics.
2. The material is soft and pliable, easy to process, and has high assembly tolerance. The hardness of copper (pure copper HV is about 35-45) is much lower than that of stainless steel, with good ductility and toughness: if the threads are slightly misaligned during installation, they can be engaged by slightly adjusting the torque, making it less likely to occur "slip thread" or "thread breakage", suitable for novice operation or assembly in precise and narrow spaces; it can be processed into different specifications (such as M2-M8 diameter, 5mm-50mm length) as needed, and the surface is easy to be plated with gold or nickel, meeting different conductivity/rust-proof requirements.
3. The single-pass structure combines isolation and fixation with dual effects. The single-pass stud is a hollow structure with "one end threaded externally (fixed end) and one end threaded internally (connection end)". Its core function is "isolation + reserved connection": Isolation function: When fixing circuit boards and panels, the spacing between components can be controlled by the length of the stud (such as the insulation spacing between the circuit board and the chassis wall), avoiding direct contact between components that can lead to short circuits; Reserved connection: The internally threaded end can be subsequently assembled with screws, facilitating later maintenance and attachment of accessories to the equipment (such as adding dustproof nets and sensors), without the need to disassemble the entire stud, enhancing maintenance convenience.

Shenzhen Huayuanxing Precision Hardware Co., Ltd. is a manufacturer specializing in the development, production, and sales of screw fasteners, with 20 years of industry experience. Huayuanxing screws are characterized by precision, miniaturization, and firmness. The company's existing factory covers an area of over 8,000 square meters, with a finished product warehouse of over 4,000 square meters and a stock inventory of over 3,000 tons. It has successively introduced more than 250 precision production equipment, including cold heading machines, thread rolling machines, and thread milling machines, capable of producing small screws with an outer diameter of 1mm and a length of 3mm, with an average daily production capacity of up to 20 million pieces. Huayuanxing has complete inspection equipment, including salt spray testing machines and 2D imaging detectors. It currently employs more than 50 people, including 8 engineering and technical personnel with 20 years of industry experience