Explore our state-of-the-art cold-headed and forged fastener series designed for high-stress industrial infrastructure and precision applications.
Unrivaled design integrity engineered for tool-less manual assembly and high-cycle industrial applications.
Butterfly nuts, commonly designated as Wing Nuts, are distinguished by their dual protruding wings. These wings provide an integrated lever arm, allowing users to apply manual torque for quick tensioning and release, removing the necessity for manual hand tools or impact drivers.
Our production involves selecting structural grades of carbon steel, stainless steel (SUS304 and SUS316), and heavy-duty brass. These materials must survive tensile shear requirements and retain threat fitment integrity across aggressive temperature variables and corrosive environmental stresses.
Manufactured to strict global dimensional specifications including German DIN 315, American ASME/ANSI B18.6.X, and ISO standards. Thread pitch ranges include coarse (UNC), fine (UNF), and metric (M3 to M24) classes, guaranteeing seamless drop-in replacements.
Positioning China's manufacturing ecosystems as the leading source for industrial fasteners.
| Material Specification | Common Standards | Tensile Strength Threshold | Corrosion Resistance Index (SST) | Typical Industrial Applications |
|---|---|---|---|---|
| Austenitic Stainless Steel (SUS304/316) | DIN 315 / ISO 3506-2 | 500 - 700 MPa | Up to 1,000 Hours (SST) | Marine vessels, food processing equipment, chemical pipelines |
| Hardened Carbon Steel (C1022A / C1018) | ANSI B18.6.X | ≥ 1,000 MPa (Heat Treated) | 72 - 500 Hours (Zinc Plated / Flake Coating) | Automotive jigs, scaffolding assembly, electrical chassis mounting |
| CZ108 High-Tensile Brass | JIS B1185 | 350 - 450 MPa | Excellent Atmospheric Durability | Electrical switchboards, architectural trim, acoustic equipment |
In outdoor cellular masts and base station installations, rapid access panels require repeated maintenance. Our heavy-duty hot-dip galvanized and stainless steel butterfly nuts ensure that technicians can inspect systems and swap modules quickly without needing power tools, minimizing downtime under extreme outdoor weather profiles.
Concrete forming and wall shoring layouts rely on fast-securing anchors that can handle heavy hydrostatic concrete pressure during pouring. Customized high-tensile structural butterfly nuts from Sinsun lock formwork ties rapidly. They are engineered to resist cement sludge contamination and allow fast stripping cycles.
Uncompromising quality management from raw material control to global logistics execution.
Our process begins with raw steel rods sourced from XING TAI Steel. In-house spheroidizing annealing furnaces prepare the steel, followed by wire drawing. Controlling this initial step ensures uniform alloy distribution, preventing structural cracks or thread failures later in production.
Using German multi-station cold heading systems and precision tooling from Taiwan, we manufacture parts with strict dimensional control. This keeps tolerances within a tight range of ±0.02 mm and limits surface roughness to Ra ≤ 0.4 μm.
Operating four specialized heat treatment lines in our facility, we control tempering cycles precisely. This achieves a consistent surface hardness of HRC 28-32 and high tensile core performance, keeping our product quality uniform across large volume orders.
Sinsun was founded with a clear objective: to build a modern manufacturing facility specialized in high-performance fasteners, establishing the technical foundations that drive our operations today.
With the expansion of our dedicated Export Department, Sinsun successfully accessed international supply chains, servicing industrial hubs across the Middle East, South America, and Europe.
We brought raw material processing in-house by installing four large spheroidizing annealing furnaces. This step allowed us to control metallurgical quality from the raw wire stage.
We updated our machinery floor with advanced multi-station cold heading systems imported from Germany, expanding our output to include high-precision drill tail screws.
Sinsun scaled output to meet growing global demand, shipping over 1,100 export containers internationally while maintaining our zero-defect quality commitment.
We set up a 1,200 m² ready-stock facility, integrated into our larger 12,000 m² smart warehouse. This setup supports faster order processing and reliable, on-time shipments for regional partners.
Adding four high-capacity heat treatment lines increased our in-house control over material hardness, helping us maintain consistent production lead times for large custom orders.
Meeting stringent international criteria to satisfy demanding project environments.
Our manufacturing facilities operate under strict ISO quality management protocols. Every batch undergoes 12+ rigorous checkpoints, verifying dimensional tolerances, thread depth, surface plating, and shear strength before shipment.
We support global environmental standards by offering RoHS and REACH compliant surface coatings. From trivalent zinc coatings (Cr3+) to eco-friendly organic flake finishes, we provide clean corrosion protection.
With a large 12,000 m² smart warehouse holding 18,000+ pallets, our logistic team monitors each shipment. Customers receive fully traceable documentation, material test reports (MTRs), and custom clearance paperwork.
Embracing smart automation and next-generation alloy treatments for high-performance fastening.
To further improve our quality control, we are adding AI-driven optical sorting systems to our final packaging lines. These smart inspection systems review every fastener in real-time, detecting minor thread or wing defects to achieve a target defect rate close to zero PPM.
We are researching new materials to meet requirements in aerospace, lightweight electric vehicles, and marine systems. Our development team is working with high-grade titanium and carbon-fiber hybrid butterfly fasteners, focusing on providing high strength-to-weight ratios and high chemical resistance.
Answers to key engineering and procurement questions from our technical division.
A complete selection of reliable anchoring, structural attachment, and general installation solutions.
