Explore our primary selection of high-precision screws, bolts, and industrial fasteners, manufactured to international engineering standards with custom surface finishes.
Sinsun Hardware, established in 2006, stands as a leading global manufacturer and strategic partner in high-quality fastening technologies. As Northern China’s largest production base for Self-Tapping Screws, our modern 30,000 square meter integrated facility is engineered to run continuous operations, maintaining rigorous consistency for demanding industrial requirements.
Over the years, we have scaled our production capacity to meet critical supply demands. We operate a 12,000 square meter smart logistics warehouse with a storage capacity exceeding 18,000 pallets. With a yearly supply volume surpassing 8,500 shipping containers, Sinsun Hardware regularly supports Tier-1 OEMs, infrastructure distributors, and construction firms across Europe, the Middle East, Southeast Asia, South America, and Russia.
Our manufacturing workflow combines machinery imported from Germany with Taiwanese high-precision dies to guarantee optimal thread forming, structural integrity, and consistency. Sinsun offers an extensive catalog of nails, screws, wires, and rivets under a rigorous quality control framework.
To meet the strict safety margins of high-stress structural joints, every batch undergoes 12+ meticulous inspection checkpoints. Our final product specifications consistently guarantee:
Modern industrial manufacturing requires fasteners that offer more than mere connection; they must withstand complex dynamic stresses, dynamic structural loading, and highly corrosive atmospheres.
We source raw carbon steel and alloy wire rods exclusively from premium producers like Xingtai Steel. Utilizing in-house spheroidizing annealing furnaces, we transform standard microstructures into uniform spheroidal cementite, ensuring optimal cold workability and preventing micro-cracking during fast cold-heading processes.
Whether in coastal construction (using lag and deck screws) or industrial machinery assemblies, environmental degradation is a constant challenge. Sinsun offers specialized coatings including high-durability hot-dip galvanization, organic zinc flakes, and eco-friendly trivalent passivations that consistently surpass the 1,000-hour salt spray testing barrier.
Electrolytic zinc plating processes can introduce atomic hydrogen into high-tensile fasteners (Class 8.8, 10.9, 12.9), leading to catastrophic, unpredictable delayed brittle fractures under load. Sinsun eliminates this risk with post-plating baking processes (de-embrittlement at 200°C) executed within critical time windows.
From a specialized factory in 2006 to a multi-national fastener supplier by 2025. Discover our major milestones in production scaling, technology integration, and quality assurance upgrades.
Sinsun established its foundational facility in Tianjin, dedicating resources to self-tapping screw production. This single-minded focus built the core manufacturing expertise that defines our product quality today.
To serve international infrastructure demands, Sinsun established its export division. This expansion brought our high-tensile self-tapping and self-drilling screws directly to global commercial channels.
Sinsun integrated raw material processing within our facility, installing four spheroidizing annealing furnaces and high-speed drawing machines. This allowed us to monitor metallurgical quality right from the wire rod stage.
To improve structural tolerances, Sinsun invested in multi-station cold heading machinery imported from Germany. At the same time, we expanded our self-drilling screw portfolio with specialized tail-gripping technologies.
Sinsun surpassed an annual output of 36,000 metric tons and exported more than 1,100 high-capacity shipping containers to key distributors worldwide, demonstrating our capacity to manage large-scale orders.
We expanded our storage capabilities with a 12,000 square meter warehouse, maintaining ready stock for standard sizes. This logistical upgrade ensures fast dispatches and stable supply chain security for partners.
We commissioned four custom-designed heat treatment lines, allowing us to manage the carburizing and hardening stages internally. This addition guarantees structural consistency, hardness depth, and reliable lead times.
A fastener's performance depends heavily on the quality of its manufacturing steps. At Sinsun, we ensure that every step of the production process is carefully managed to guarantee reliability:
Sinsun Hardware maintains a dedicated in-house testing facility. Every production batch is certified to international standards before leaving our warehouse.
We test fasteners using hydraulic tensile and shear machines to confirm that yield strengths match DIN, ISO, ASTM, and GB standards. Torque testing verifies that screw heads will not snap during high-impact installations.
Using Vickers and Rockwell testers, our laboratory technicians measure the depth of the hardened carburized case. This ensures the screw can tap into sheet metals without thread flattening.
We test surface finishes under saline mist conditions inside salt spray cabinets. This process allows us to verify coating durability and ensure the long-term corrosion resistance required for outdoor installations.
All raw materials are accompanied by mill test certificates (MTC) to provide full traceability from melting furnace to final product delivery.
We regularly host international buyers and inspection agencies at our factory, maintaining full transparency across all production stages.
Find answers to common questions about sourcing custom screws and fasteners from our facility.
View our range of specialized drywall fasteners, wire meshes, and construction tools designed for drywall systems and commercial building projects.
Speak with our sales and engineering team about custom sizes, plating requirements, packaging options, and bulk volume rates.
