Explore our premium range of industrial-grade wood-screws, custom fasteners, structural bolts, and galvanized components sourced globally.
Operating a massive 30,000 sqm production facility, Sinsun Hardware combines state-of-the-art German heading equipment with Taiwanese manufacturing standards.
Sinsun Hardware, established in 2006, is a leading manufacturer and global supplier of high-quality fasteners. As Northern China's largest producer of Self-Tapping Screws, 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 centres. 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 stapling is not merely about joining materials; it is an optimization of mechanical shear distribution, tensile grip, and wire formulation. The N-series heavy-duty staples, specifically spanning N25 (25mm), N26 (26mm), N27 (27mm), and N28 (28mm), are standard-setters in load-bearing timber and structural sheathing.
Constructed from high-tensile 16-gauge carbon steel wire, these fasteners feature a 7/16-inch (11.1mm) medium crown width. This specific dimension balances maximum surface holding pressure without slicing through building substrates like OSB, plywood, or structural gypsum.
Comprehensive engineering dimensions and mechanical thresholds designed for heavy-duty structural applications.
| Staple Model | Leg Length (Metric) | Leg Length (Imperial) | Wire Gauge | Crown Width | Tensile Strength (MPa) | Recommended Pneumatic Tools |
|---|---|---|---|---|---|---|
| N25 | 25.0 mm | 1.0" | 16 Ga (1.6x1.4mm) | 7/16" (11.1mm) | 950 - 1100 MPa | Senco MS4450+, Duo-Fast MS7664, Paslode 3150 |
| N26 | 26.0 mm | 1-1/32" | 16 Ga (1.6x1.4mm) | 7/16" (11.1mm) | 950 - 1100 MPa | Senco SNS41, Hitachi N5008AC2, Bostitch 651S5 |
| N27 | 27.0 mm | 1-1/16" | 16 Ga (1.6x1.4mm) | 7/16" (11.1mm) | 1000 - 1150 MPa | Makita AT1150A, Senco SNS200XP, Bostitch MS |
| N28 | 28.0 mm | 1-1/8" | 16 Ga (1.6x1.4mm) | 7/16" (11.1mm) | 1000 - 1150 MPa | Senco SNS41, DeWalt D51430, Paslode S200-S16 |
*Note: All N-series staples are available in Electro-Galvanized, Hot-Dip Galvanized, and Stainless Steel (AISI 304/316) options to meet architectural standards for coastal or pressure-treated wood systems.
Across global industrial domains, structural sheathing and heavy-duty logistics packaging require fastening solutions that resist high wind-shear and dynamic cargo movement stresses.
Used extensively for installing subfloors, wall sheathing, and roof decking. The N25-N28 leg profile guarantees optimized penetration depths without damaging primary load-carrying joists or rafters.
Securing structural block segments of heavy wooden pallets. High shear tolerance prevents joint failures under intense vibration during multi-modal railway and marine transport operations.
Securing dense hardwoods like beech, oak, and engineered MDF boards. Superior stiffness ensures no bending when fired at high speeds, guaranteeing long-lasting joints.
Our complete vertical integration enables Sinsun Hardware to control quality from raw wire coils to shipped containers, establishing unmatched precision.
Sinsun Hardware partners with premier domestic suppliers like Xingtai Iron & Steel for high-grade carbon wire rods. In-house processing begins with spheroidizing annealing in computerized gas furnaces, which optimizes internal grains and allows wire drawing down to ±0.02mm tolerances. This metallurgy background guarantees the staple legs possess high shear capability without turning brittle.
Our production lines leverage precision Taiwanese cold-heading technology alongside high-volume automatic collation machineries. Utilizing automated glue tanks, the stapling wire bands are coated with custom adhesive resins that cure under multi-stage heat, guaranteeing uniform thickness and complete compatibility with modern air tools.
Ensures that the staple crowns and wire cross-sections are symmetrical, preventing gun jams and ensuring uniform firing depths.
Equipped with 4 continuous atmosphere carburizing furnaces that guarantee uniform tempered hardness (HRC 28-32) and tensile strengths over 1000 MPa.
We test our galvanized zinc coatings in real-world environmental chambers, ensuring 1000+ hours of continuous salt-spray corrosion resistance (per ASTM B117).
B2B procurement decisions are driven by total cost of ownership, risk mitigation, and continuous supply line security.
For global distributors, purchasing construction hardware from China requires transparency. Sinsun Hardware works directly with purchasing managers to optimize pallet space and shipping capacities, loading over 1,100 containers annually with strategic container packing programs.
Our 12,000 sqm modern warehouse keeps massive reserves of raw wire, semi-finished goods, and standard products ready. This eliminates lead-time delays due to winter production bans or power grid optimizations, ensuring consistent material pipelines.
1. Customs HS Code Verification: 731700 (Staples of Iron/Steel Wire) classification checks for tariff reduction.
2. FCL & LCL Consolidation: We cross-load other related fasteners (screws, nails, wires, rivets) from our 20,000 SKU list to reduce transportation costs.
3. Anti-Dumping Mitigation: Leveraging alternative production records, customs documentation, and detailed trade rules compliance.
Follow our historical milestones, tracing our growth from local manufacturing specialization to a global industrial supplier.
Sinsun began with a singular focus in 2006: to build a factory dedicated to self-tapping screws. This foundational specialization established our core expertise from the ground up.
The year 2012 marked a pivotal step for Sinsun with the establishment of our Export Department, helping our custom fasteners reach international clients.
Added four spheroidizing furnaces and wire drawing systems. We moved production control directly to raw-material processing stages, ensuring absolute consistency.
Upgraded production lines with German multi-station heading machinery and introduced dynamic tail-gripping drill tail screws to our main portfolio.
Sinsun achieved 36,000 tons in annual output, exporting over 1,100 high-capacity shipping containers to global trade clients.
Inaugurated a dedicated 12,000m² smart storage warehouse, establishing quick delivery options and reducing supply line lag times.
Commissioned 4 new integrated atmosphere heat treatment systems to double monthly outputs while securing product hardness consistency.
As building codes modernize globally (e.g., Eurocode 5, IRC 2021, and ASTM standards), industrial fasteners must meet documented performance guidelines. Sinsun's N25-N28 staples are continuously updated to align with global trade compliance.
Our metallurgy teams focus on optimizing hydrogen-embrittlement relief protocols post-plating, protecting fasteners from sudden structural failures. Sinsun is also upgrading plating technology to incorporate Eco-Zinc options, reducing environmental impacts while achieving salt-spray performance marks.
In-depth technical answers regarding Sinsun's N25-N28 medium crown staple range.
The "N" denotes the Senco-equivalent profile designation, which features a 16-gauge wire thickness and a 7/16-inch (approx. 11.1mm) crown. The following numbers (25, 26, 27, 28) designate the leg length in millimeters.
16-gauge staples feature a thicker cross-section compared to 18-gauge, offering higher shear resistance. This prevents floor squeaking and limits lateral movements under continuous human traffic loads.
For high-moisture environments, we supply hot-dip galvanized coating (meeting ASTM A153 specifications) and premium Stainless Steel (Grade 304 and 316), protecting against chemical breakdown in pressure-treated timber.
Yes. Our N25-N28 staples are manufactured within narrow width tolerances to run smoothly in major tools, including Senco, Duo-Fast, Hitachi, DeWalt, Makita, and Paslode pneumatic staplers.
The leg surfaces are coated with a specialized heat-activated adhesive. When driven at high speed, friction heats the adhesive, allowing the leg to slide smoothly before bonding with the wood grain.
Thanks to our large 12,000 sqm warehouse and integrated production setup, standard specifications can be dispatched in 25 to 30 days, while custom OEM sizes take 35 to 45 days.
Premium OEM and ODM hardware solutions designed to withstand high load demands in heavy manufacturing environments.
Get in touch with our technical team to request custom size previews, metallurgical certifications, or a quick bulk quote.
