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The 90 Series Stainless Steel Staples represent an industry standard in narrow-crown pneumatic fastening systems. Operating with an 18-gauge wire thickness (approx. 1.25mm × 1.0mm) and a crown width of 5.8mm (approximately 1/4 inch), these staples deliver unique holding power that outperforms traditional wider crowns in precision timber structures.
By utilizing Grade 304 and Grade 316 Stainless Steel Alloys, Sinsun Hardware prevents premature galvanic fatigue and stress corrosion cracking (SCC). Our staples are engineered with precise crown radii and divergent chisel points, ensuring maximum wood penetration without splitting the substrate fibers.
Our ODM solutions are tailored for heavy-duty applications where mechanical strength must coexist with severe environmental resistance. This includes coastal construction, heavy-load pallet manufacturing, structural framing, cabinetry, and automotive trim.
Operating the largest self-tapping screw and industrial fastener production ecosystem in Northern China since 2006.
Sinsun Hardware has built a reputation for excellence on a global scale. From our centralized 30,000 sqm integrated production site, we process complex alloy wire configurations into premium structural fasteners. Our manufacturing footprint is bolstered by advanced heat-treatment systems, high-speed Taiwanese stamping lines, and heavy-duty cold heading equipment.
With an annual volume exceeding 8,500 containers shipped to major construction distribution channels in South America, the Middle East, Southeast Asia, and Russia, we maintain a logistics capacity that ensures seamless supply-chain integration for our ODM and OEM clients.
Our 90 Series Stainless Steel Staples are constructed from verified wire raw materials sourced directly from XING TAI Steel.
| Staple Class Parameter | AISI 304 Stainless Steel Grade | AISI 316 Marine Grade | Testing & Evaluation Standards |
|---|---|---|---|
| Crown Width | 5.8 mm (Nominal) | 5.8 mm (Nominal) | Dimensional tolerance ±0.02mm |
| Wire Gauge / Dimensions | 18 Gauge (1.25mm × 1.00mm) | 18 Gauge (1.25mm × 1.00mm) | ASTM F1667 Compliance |
| Ultimate Tensile Strength | 900 - 1100 MPa | 1000 - 1200 MPa | ISO 6892-1 Tensile Testing |
| Corrosion Resistance Performance | 1,000+ Hours (Red Rust Free) | 1,500+ Hours (Marine exposure stable) | ASTM B117 Neutral Salt Spray (NSS) |
| Typical Applications | High-end cabinetry, general outdoor trim | Boatbuilding, marine docks, severe acidic env. | Eurocode 5 Timber Fastener Standard |
We begin the fabrication cycle using premium low-impurity stainless steel wire rod. Spheroidizing annealing is handled in-house to achieve uniform microstructural stability before wire drawing.
Our production facilities utilize German multi-station cold heading systems and Taiwanese precision cutting devices to maintain strict ±0.02mm dimensional tolerances for seamless compatibility with pneumatic staple guns.
Every batch of 90 Series staples undergoes 12 comprehensive inspections, including salt-spray chamber testing, shear-load benchmarking, leg divergence checks, and feed-jam risk assessment.
From our roots as a focused manufacturer of structural fasteners to our status as a leading global supplier.
Sinsun was founded with a specialized focus on self-tapping screws and precision fastening components in Northern China. This early specialization established our technical foundations.
Establishment of our dedicated international export department, broadening our market reach to structural distributors, construction firms, and fastener wholesalers worldwide.
Installed four advanced spheroidizing furnaces, shifting our production process upstream. By integrating raw wire drawing in-house, Sinsun took full control over chemical consistency and alloy structure.
Upgraded our plant with imported German multi-station cold heading systems. This expansion enabled the mass production of high-precision components like the 90 Series Staples with ±0.02mm accuracy.
Achieved a manufacturing volume of 36,000 tons annually. Sinsun shipped over 1,100 export containers in a single calendar year, demonstrating our ability to meet large-scale demand.
Opened our smart, automated storage facility with over 18,000 pallet positions, allowing us to maintain robust stock levels and streamline order fulfillment.
Integrated four state-of-the-art continuous atmospheric heat treatment lines to optimize the tensile strength and toughness of our industrial fastener ranges.
How our ODM staples address structural requirements across various regions and industries.
Complies with ASTM F1667 standards for structural timber and sheathing. Our 90 Series staples are engineered to withstand shear loads along subfloor edges, offering a reliable alternative to common framing nails in high-speed pneumatic operations.
Our Grade 304 and 316 staples meet the CE requirements of EN 14592. They are approved for Service Class 3 (exterior applications with high humidity), ensuring structural stability in marine climates, timber bridges, and exterior wood cladding.
Engineered for high-volume crate assembly. Sinsun's staples are designed with optimal crown rigidity and leg divergence, allowing them to pierce dense hardwoods without splitting the grain, even under rapid pneumatic pressure.
From chemical wire analysis to packaging design, Sinsun ensures every batch meets your specifications.
Our manufacturing workflow begins with rigorous incoming material testing. Sinsun operates direct chemical spectrum analyzers to verify the chromium, nickel, and carbon content of our steel stock. The wire is then processed in our spheroidizing annealing furnaces to ensure uniform hardness, which is critical for consistent wire drawing.
Our forming tools utilize precision dies that maintain sharp chisel points. Dull points lead to fiber tearing rather than cutting, which reduces the withdrawal resistance of the staples. Sinsun's tooling QA guarantees that every chisel point remains clean and sharp.
Answers to common engineering and sourcing questions from our global clients.
Grade 304 contains approximately 18% chromium and 8% nickel, providing strong rust protection for general outdoor exposure. Grade 316 includes 2% to 3% molybdenum, which protects against pitting and chloride corrosion. This makes Grade 316 staples the preferred choice for marine applications and industrial sites exposed to chemical compounds.
Yes. Our 90 Series staples feature a standard 5.8mm (approx. 1/4 inch) crown and 18-gauge wire thickness. This makes them compatible with leading pneumatic tool brands designed for 90 series fasteners, ensuring smooth feeding and minimizing jams on the production line.
We provide full-service ODM packaging support. Our team creates customized box templates, 3D design previews, and high-density outer carton designs. We optimize layouts for maximum container space utilization, helping to lower shipping costs per unit.
Our standard production lead time ranges from 25 to 35 days from deposit confirmation. This efficiency is made possible by our 12,000 sqm warehouse and raw material stock, allowing us to respond quickly to large-scale wholesale orders.
Building partnerships through transparent quality, regular factory visits, and global exhibition participation.
Additional heavy-duty anchoring and structural wood screws from our modern manufacturing plant.
