Self-Clinching Screw
Products Description
Self-Clinching Screws are functional fasteners specifically designed for joining thin plates or sheet metal parts. Their core design features special press-fit teeth and positioning steps on the screw head or shaft. During installation, a press is used to force the screw into a pre-drilled hole, causing controlled plastic flow in the surrounding base material, thus achieving a permanent fixation that prevents rotation and detachment.
This process requires no heating, welding, or secondary processing, preserving the mechanical properties of the base material while significantly improving the stability and consistency of the overall structure.
Technical Features: Precise R&D and Innovation Drive Upgrades in Thin-Plate Fastening Performance
| Optimized Press-Fit Structure Technology | Based on the plastic deformation characteristics of different thin-plate materials (cold-rolled steel, stainless steel, aluminum), we optimize the press-fit structure design through finite element analysis, precisely controlling parameters such as embossing density, boss height, and slot angle to ensure the strongest mechanical interlock with the thin-plate material after press-fitting. Simultaneously, we developed an adaptive press-fit structure that automatically adjusts the engagement depth according to minute deviations in the thin-plate thickness, improving product adaptability. |
| High-Precision Thread Machining Technology | Utilizing precision thread grinding and correction technology, we optimize the thread profile design, increasing the contact area and friction coefficient of the thread meshing surface, and reducing thread clearance. For the load characteristics of thin-plate connections, we strengthen the shear strength of the threads, preventing stripping and breakage during load-bearing, ensuring connection reliability. |
| Press-fit Adaptation Optimization Technology | Developed proprietary press-fit guiding technology, incorporating guide structures on the screw head or shank to ensure precise alignment between the Self-Clinching Bolt and the positioning hole in the thin plate during press-fitting, preventing press-fitting failures caused by misalignment. Simultaneously, the guide angle of the riveting structure is optimized to reduce press-fitting resistance, minimize damage to the thin plate material during press-fitting, and improve press-fitting efficiency and success rate. |
| Material Adaptation and Strengthening Technology | Developed proprietary material strengthening solutions for different thin plate materials and working conditions. Through heat treatment processes such as tempering and quenching, the hardness and plasticity of the Self-Clinching Compression Screw material are adjusted to ensure smooth embedding of the riveting structure into the thin plate during press-fitting, while maintaining the strength of the screw itself. For products used in corrosive environments, special anti-corrosion materials and surface treatment processes are employed to enhance corrosion resistance and extend service life. |
Strategic Material Selection and Heat Treatment
We offer optimized material solutions based on application scenarios:
Stainless Steel (SUS303/304): Exhibits excellent corrosion resistance, making it suitable for high-cleanliness or outdoor environments, such as electronics, medical, and food equipment. Through precise annealing, we ensure sufficient plasticity for metal flow during riveting, while maintaining adequate strength after installation.
Carbon Steel (Medium Carbon Steel/Alloy Steel): After quenching, tempering, and heat treatment, it possesses extremely high core hardness and surface wear resistance, providing the strongest locking torque and tensile strength, making it the preferred choice for heavy-duty applications.
Precision Genes of Cold Forging: The Clinching Screw body is precision-formed using a multi-station cold forging machine. This process not only ensures the continuity of the material fibers but, more importantly, enables the head, shaft, and, most crucially, the "torque-resistant annular groove" to be formed in one piece with micron-level precision. The geometry, depth, and angle of this groove are the key determinants of riveting performance.
Application advantages for customers
Simplified design and supply chain
Eliminates the need for additional Self-Clinching Studs such as welded nuts and rivet nuts, reducing material types and assembly processes.
Increased production automation
The press-fit process easily integrates into automated production lines, working in conjunction with CNC punching machines and laser cutting machines to achieve a seamless punching-press-fitting process, significantly improving production efficiency.
Reduced total manufacturing costs
Although the cost per Push-In Clinching Screw may be slightly higher, the overall savings in secondary processing (welding, tapping), rework, inventory management, and space occupancy significantly reduce the total cost of ownership (TCO).
Enhanced product quality and consistency
High connection point strength and good consistency improve the overall structural rigidity of the Self-Clinching Threaded Fastener, eliminating the risk of loosening during long-term use and enhancing brand reputation.
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