Clinching Screw
Products Description
A Clinching Screw is a functional fastener that is cold-pressed into thin metal sheets or sheet metal parts. Its core design lies in the annular press-fit teeth or locking groove structure beneath the screw head. During the press-fit process, the base metal undergoes controlled plastic flow and fills the locking area, thus forming an irreversible mechanical interlock.
Structural features include:
One-piece threaded rod structure, allowing for repeated assembly and disassembly after installation.
Bottom locking ring or anti-rotation tooth design prevents rotation and pull-out.
Suitable for thin sheets, not dependent on back space.
Flush-on or low-exposed design with the sheet metal surface facilitates compact structural layout.
Product Nature and Core Features
Integrated Press-Fit Locking Structure
The head integrates a dedicated press-fit tooth/press-fit table structure, allowing for rapid embedding into the sheet metal and forming an anti-rotation engagement during pressure application. A stable connection is achieved without additional locking components, making Self-Clinching Bolt suitable for thin-plate assembly scenarios without pre-processing.
Specific Properties for Thin Plates
Designed specifically for the characteristics of thin-plate materials (cold-rolled steel, aluminum alloy, stainless steel, etc.), the Self-Clinching Screw does not damage the sheet metal substrate during connection, avoiding the deformation and cracking problems caused by traditional connection methods. It is suitable for various sheet thicknesses and materials.
High Stability Connection Performance
The press-fit structure forms a dual fastening of mechanical engagement and threaded engagement with the sheet metal, resulting in connection strength far exceeding that of traditional self-tapping screws. It effectively resists vibration, impact, and other conditions, ensuring connection stability during long-term use.
Highly efficient and convenient assembly
No pre-processing is required. Assembly can be completed directly through riveting equipment or manual tools, which greatly shortens the production process and improves assembly efficiency, especially suitable for mass production of sheet metal parts.
Technical Features: Innovation Enables Optimized Thin-Plate Connection Experience
| Adaptive Thin-Plate Material Press-Firing Technology | For thin-plate materials of varying hardness, we optimize the tooth profile design of the press-fit head (sharp teeth, blunt teeth, helical teeth) and optimize the stress distribution of the press-fit structure through finite element analysis. For soft aluminum alloy plates, a blunt tooth structure is used to prevent tearing, while a sharp tooth structure is used for high-strength steel plates to enhance interlocking strength, achieving precise adaptation to thin plates of different materials. |
| Synergistic Reinforcement Technology of Thread and Press-Firing Structure | We employ a cold-rolled thread forming process to ensure continuous distribution of thread metal fibers, improving the tensile strength and wear resistance of the thread; simultaneously, we optimize the coaxiality of the thread and the press-fit head to ensure uniform stress during the press-fit process, avoiding plate deformation or connection failure due to coaxiality deviation, and improving overall connection accuracy. |
| Anti-loosening and Vibration-resistant Structural Optimization Technology | Addressing the demands of vibration-prone operating conditions, an innovative anti-loosening structure combining riveting teeth and threads has been designed. The riveting teeth employ an interlaced design to enhance anti-rotation performance, while the thread profile features micro-anti-slip textures, forming a dual anti-loosening system of "mechanical engagement anti-rotation + thread anti-slip," effectively resisting the risk of loosening caused by high-frequency vibrations. Suitable for vibration scenarios such as automobiles and construction machinery. |
| Dedicated Riveting Technology for Thin-walled Sheets | For thin-walled sheets with a thickness of 0.5-1.5mm, a lightweight riveting head structure has been developed. While ensuring riveting strength, the Self-Clinching Compression Screw reduces sheet deformation during the riveting process. By optimizing riveting pressure parameters and the head structure, reliable connections of thin-walled sheets are achieved, suitable for lightweight applications such as electronic device housings and precision instrument sheet metal parts. |
Design Advantages: User-Centric Design
When designing the Clinching Screw, we fully considered the end-user experience:
Anti-Slip Pattern Design: Special drive grooves (such as slotted, Phillips, or hex sockets) are designed on the head or side of the rivet Clinching Screw. This is not only for clamping during riveting but also allows tools to directly act on the screw head in certain adjustment scenarios.
Bottom Through-Hole and Blind-Hole Design:
Through-Hole Type: Allows bolts or other fasteners to pass through completely, enabling connections of unlimited length.
Blind-Hole Type: Suitable for thin sheets that do not require penetration or sealed cavities that require a closed bottom to prevent liquid/dust intrusion.
Flange Chamfering: The edge where the Self-Clinching Stud contacts the sheet metal is designed with a small chamfer or rounded corner. This detail is crucial; it prevents sharp edges from cutting the sheet metal plating during riveting, leading to rust, and also protects the operator's hands.
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