Explore our top-tier industrial components manufactured under strict quality matrices to support critical assemblies worldwide.
Sinsun Hardware, established in 2006, is a leading manufacturer and global supplier of high-quality fasteners. We operate from a gigantic 30,000 sqm integrated facility that includes modern production zones, a 12,000 sqm smart warehouse (18,000+ pallet capacity), and multi-language customer support centers. Our yearly supply of over 8,500 containers consistently services key global markets such as the Middle East, Southeast Asia, South America, and Russia.
Industrial-grade wing fasteners designed for tool-free, high-torque manual tightening, balancing ease of maintenance with structural integrity.
We guarantee tolerance thresholds within ±0.02mm for thread pitch, wing symmetry, and thread depth. Fully compliant with DIN 315, DIN 316, and ASME/ANSI B18.6.X industrial dimensional guidelines.
Sourced directly from premium suppliers like Xingtai Steel. Materials include Carbon Steel (Grade 4.8, 8.8), Stainless Steel (SUS 304, SUS 316) for high-salinity exposure, and premium alloy brass.
Surface finishing protocols include clear/yellow zinc plating, black phosphate coating, and hot-dip galvanizing, enabling verified salt spray test performance ranging from 48 to 1,000+ hours.
Our advanced production facilities utilize precise technical matrices to guarantee consistent performance across heavy-duty applications.
At SINSUN, quality control begins at the source. We start with premium raw materials from XING TAI Steel, then perform in-house spheroidizing annealing and precision wire drawing in our own plant. This level of process vertical integration, supported by our advanced drawing machines and gas-fired furnaces, ensures superior steel microstructure, mechanical consistency, and high performance in every fastener we produce.
Our production prowess is driven by German-imported machinery, precision Taiwanese technology, and a dependable staff of trained specialists. We offer over 20,000 SKUs of nails, screws, wires, and rivets, each undergoing 12+ stringent quality checks to assure outstanding surface polish (Ra ≤ 0.4μm), corrosion resistance (1,000+ hours salt spray), dimensional accuracy (±0.02mm), high strength (1,000+ MPa), and consistent hardness (HRC 28-32).
Our technical team works directly with clients from design to manufacturing, providing OEM support for unusual materials, coatings, dimensions, and performance requirements to ensure that each custom order matches exact specifications.
Explore our journey of strategic capacity expansions, technological integration, and logistics milestones from 2006 to our 2025 system integrations.
Sinsun began with a singular focus: to build a factory dedicated to self-tapping screws and core cold heading expertise.
Established our dedicated Export Department. Sinsun products began reaching key international markets.
Added 4 spheroidizing furnaces for raw material processing and in-house wire drawing capabilities to control structural quality.
Production enhanced with German multi-station cold heading machinery, expanding capacities to complex custom shapes.
Reached 36,000 tons in annual production, fulfilling international orders with over 1,100 export containers.
Established a dedicated ready-stock warehouse program supporting rapid order dispatch for standard parts.
Integrated 4 new state-of-the-art continuous heat treatment lines to ensure total hardening control and on-time schedules.
Analyzing the metallurgical shifts and engineering requirements of next-generation fastening applications.
As regulatory frameworks like RoHS and REACH tighten globally, Sinsun is phasing out hexavalent chromium coatings, transitioning to advanced trivalent chromium (Cr3+) and zinc-nickel alloy platings. This ensures high corrosion resistance without environmental compromise.
Modern machinery demands fasteners that resist vibrational relaxation. We are developing wing bolt designs with built-in polymer locking patches (such as Nylon 360-degree patches) that retain clamping load under dynamic stresses without requiring auxiliary split washers.
To achieve a target of zero assembly line defects for automotive and aerospace OEMs, our factories are integrating automated optical sorting machines (AOI) capable of scanning threads for minor pitch micro-fractures down to the micron level.
Global supply chain volatility requires suppliers to guarantee not only production quality, but inventory and shipping predictability. Sinsun's integrated facility in Northern China leverages advanced digital tracking systems, connecting production lines, quality labs, and our 12,000 sqm smart warehouse.
With over 18,000 pallet capacity handled by automated guided vehicles (AGVs), we maintain high baseline stocks of high-demand raw steel wires. This buffer system insulates our global partners against steel price spikes and material shortages, cutting lead times by up to 35% compared to regional competitors.
Tailored fastening technology optimized for the demanding environments of core industrial sectors.
Solar tracking arrays and wind turbines require fasteners that can withstand outdoor exposure. Sinsun’s hot-dip galvanized and stainless steel wing bolt nuts provide simple manual adjustment for field technicians during maintenance, while offering high resistance against atmospheric moisture and UV degradation.
For electric vehicle battery cases and consumer electronic enclosures, we engineer custom wing bolt dimensions that facilitate quick-access battery replacement or enclosure access. Our parts are calibrated to precise dynamic torque specifications to avoid housing fatigue.
Manufacturing setups use our high-tensile wing nuts for jig fixtures and clamping templates. These parts undergo continuous carbonitriding heat treatments to achieve robust surface hardness while maintaining high core toughness, preventing wing fracture under high tension.
Sinsun Hardware supports complex international import protocols. All our wing bolts, wing nuts, self-tapping screws, and anchoring products are fully documented with Material Test Reports (MTRs), Mill Test Certificates (to EN 10204 3.1), and compliance statements for regional standards like CE (European Union), DIN (German Institute for Standardization), ASTM, and ASME.
Our multi-language customer support teams are strategically trained to handle international customs documentation, anti-dumping regulations, and custom clearance pathways for North America, Europe, Latin America, and Southeast Asia. We ensure your fasteners arrive at your logistics hub with zero administrative delay.
Get detailed, technical answers directly from our engineering team regarding procurement, customization, and manufacturing capabilities.
For standard sizes, we support flexible trial quantities depending on warehouse stock levels. For custom OEM specifications requiring custom molds, forging dies, or specific material chemistry (like specialized SUS 316), the baseline MOQ typically ranges from 50,000 to 100,000 pieces per size.
Our 2025 facility expansion integrated 4 advanced computer-controlled mesh-belt heat treatment lines. Temperature profiles are monitored continuously in real-time, preventing carbon depletion and ensuring uniform HRC 28-32 core hardness across every single production run.
Yes. We offer standard electro-zinc plating (minimum 48 hours salt spray resistance), yellow zinc passivation, and high-performance organometallic coatings (such as Dacromet or Geomet) that reliably withstand 500 to 1,000+ hours in salt spray testing chambers without showing signs of red rust.
Yes, our packaging division provides comprehensive OEM and ODM solutions. Leveraging our 12,000 m² warehouse and packaging equipment, we provide custom-printed cartons, individual plastic bags with barcodes, plastic boxes, and customized pallet packing. We also offer 3D box design previews before mass packing.
Explore our broader selection of high-performance components, structural anchors, and precision metal washers.
