In heavy-duty manufacturing and high-stress wood construction, structural integrity hinges on precise anchoring solutions. The N38-N45 series staples (measuring 38mm to 45mm, or 1-1/2″ to 1-3/4″ in leg length) represent the pinnacle of heavy-wire fastening technology. Typically fabricated from premium medium-to-high carbon steel or grade 304/316 stainless steel, these fasteners are engineered to handle high sheer, deep penetration, and high pull-out resistance demands.
Our ODM factory lines utilize optimized wire tensile properties combined with dynamic collation techniques to guarantee zero-fault mechanical stapling. Whether deployed in automated pallet framing tables, structural sheathing panels, or custom packaging crates, our staples are built to prevent jamming and wire buckling, ensuring continuous high-speed production run-times.
Wire Diameter: 16 Gauge (1.6mm nominal) to 14 Gauge (2.0mm nominal) for ultimate structural shear holding capacity.
Crown Configurations: Medium-wide crown (approx. 10.8mm to 11.1mm) to optimize surface pull-through resistance on softwoods and engineered OSB boards.
Coating Standard: Dynamic Hot-Dip Galvanization (HDG), heavy electro-galvanized (12μm+ zinc deposit), or premium polymer proprietary adhesive coatings.
Sinsun Hardware, established in 2006, is a premier manufacturer and global supplier of high-integrity fasteners. As Northern China's largest producer of Self-Tapping Screws, we operate from a massive 30,000 sqm integrated facility. Our modern complex features cutting-edge processing zones, a 12,000 sqm smart warehouse holding an excess of 18,000 pallets, and multi-lingual service centers. We ship over 8,500 shipping containers annually across key markets in the Middle East, Southeast Asia, South America, and Eastern Europe.
Sinsun established its first manufacturing facility in northern China, focusing specifically on high-demand self-tapping fasteners and basic collated hardware.
Established the international export division, allowing Sinsun products to enter major industrial markets across Europe, Asia, and North America.
Installed four spheroidizing annealing furnaces. We gained the capability of conducting wire-drawing and metallurgic optimization in-house.
Imported advanced German multi-station cold heading machinery and introduced heavy-wire collation mechanisms for specialized structural staples.
Reached a massive milestone of 36,000 tons of annual production output and processed more than 1,100 high-capacity export containers.
Inaugurated our 12,000 square meter smart-managed warehouse facility to maintain deep stock inventory levels and fast-track shipping logistics.
Commissioned 4 new integrated gas-shielded heat treatment belt lines, optimizing the core toughness and rigidity of our N38-N45 staple legs.
At Sinsun, quality control begins at the molecular level. We source premium high-grade wire rod coils directly from XING TAI Steel, a world-recognized leader in specialized metallurgical steel. Every single batch is validated for uniform chemical composition (low sulfur and phosphorus content to avoid cold-brittleness).
Our in-house gas-fired spheroidizing furnaces alter the carbide structure inside the steel. This structural refinement ensures high ductility during cold drawing, preventing structural micro-fissures in the wire which could lead to staple leg buckling when penetrating dense hardwoods.
Using Taiwanese high-speed wire drawing technology and German multi-station forming presses, we keep dimensional tolerances within a microscopic range of ±0.02mm. Our collated strips are clean, uniform, and coated with structural adhesive that acts as a lubricant during driving and a permanent bonder after curing.
Every batch of our ODM N38-N45 staples undergoes a suite of tests including a 1,000+ hour salt spray test (for zinc coating longevity), tensile strength evaluations (exceeding 1000 MPa), and hardness checks (HRC 28-32) to verify complete mechanical integrity.
| Staple Model / Series | Leg Length (mm / inch) | Wire Gauge / Cross Section | Tensile Strength (MPa) | Salt Spray Performance | Primary Industrial Applications |
|---|---|---|---|---|---|
| ODM N38 | 38mm (1-1/2″) | 16 GA (1.60 x 1.40mm) | 950 - 1100 MPa | Up to 1000 Hrs (Galvanized) | Pallet assembly, framing, wall sheathing, wood furniture |
| ODM N40 | 40mm (1-9/16″) | 16 GA (1.60 x 1.40mm) | 980 - 1120 MPa | Up to 1000 Hrs (Galvanized) | Subflooring, crate building, structural roof decking |
| ODM N45 | 45mm (1-3/4″) | 15 GA / 16 GA | 1000 - 1150 MPa | Up to 1000 Hrs (Galvanized) | Heavy crating, structural framing, fence boards, industrial wood boxes |
In residential construction across North America and Europe, N38 and N45 staples are code-approved for securing OSB, plywood, and fiberboard sheathing to wood wall frames. The polymer adhesive coating improves pull-out resistance under high wind loads, providing a secure hold.
Logistic packaging manufacturers depend on structural fasteners that resist joint loosening caused by continuous transit vibrations. Our N38-N45 staples feature chisel points and divergent points that flare outward, providing strong joint mechanical locking.
Securing structural components in furniture frames requires fasteners that can penetrate dense hardwoods without splitting the grain. Sinsun's custom heat treatment ensures our staples maintain the driving power needed to penetrate oak, ash, and beech framing elements.
Located in the heart of Northern China's steel-producing region, Sinsun sources raw materials, processes steel wire, applies heat treatments, and manufactures collated strips in a single continuous production cycle. This localized supply chain reduces internal logistics costs, passing the savings directly to our global customers.
Our ODM N38-N45 staples are designed to run smoothly in major pneumatic tool brands, including Senco, Bostitch, Max, and Paslode. By maintaining tight dimensional tolerances on wire gauge and collation tape thickness, we reduce tool jamming and support reliable production line operation.
We provide tailormade engineering solutions, adjusting leg lengths to custom tolerances, choosing custom steel compositions, and offering private label packaging. Our engineering team uses 3D visualization and CAD prototyping to ensure your specifications are met before starting full production runs.
Operating a 12,000 sqm facility with space for over 18,000 pallets allows us to keep raw materials and finished inventory on hand. We coordinate with shipping hubs to handle document customs, packing weight optimization, and sea freight routing to ensure on-time delivery.
We welcome international clients for on-site factory visits to inspect our production lines. Sinsun regularly participates in global industrial fastener exhibitions to show our latest products, meet with partners, and build lasting business relationships.
