From the first bolt to the final assembly, I stand behind our hexagon head screw bolt, engineered for durability and precise fit. I work with factories to supply OEM-grade fasteners that meet strict tolerances, corrosion resistance, and load requirements. As an OEM partner, we offer flexible MOQs, fast lead times, and configurable materials (stainless steel, carbon steel, alloy), coatings (zinc plated, black oxide, PVD). We ensure thread quality and hex socket dimensions are consistent across batches, so you can rely on our supply for critical assemblies or mass production. We keep technical data sheets, test certificates, and supplier audits ready for your procurement team, because I know you shop with compliance in mind. If you're a Supplier or OEM looking to consolidate sourcing, we provide competitive pricing and stable supply. Our goal is simple: help you reduce downtime and speed your time to market with trusted hexagon head screw bolt solutions.
In global procurement, hexagon head screw bolts are more than fasteners—they anchor assembly lines where service and innovation converge. A Dongguan-based precision engineering hub blends smart manufacturing with responsive service: design collaboration, rapid prototyping, flexible MOQs, and real-time QC data with every batch. Whether you need standard grades or tailored alloys, the supply chain adapts to demand. What sets a capable supplier apart is not only a catalog of sizes but a culture of reliability: consistent material quality, finishes and coatings that endure vibration, corrosion, and temperature shifts; full traceability from raw material to finished bolt; and certifications that ease cross-border audits. By pairing engineering insight with scalable production, this Dongguan-based partner stands out where service meets innovation—delivering confident procurement for global teams and faster time-to-value from design to deployment.
| Item | Standard | Size (d × L) mm | Pitch (P) mm | Material | Strength / Grade | Surface Finish | Coating | Head Across Flats (S) mm | Applications |
|---|---|---|---|---|---|---|---|---|---|
| M6x20 | DIN 931 | 6 × 20 | 1.0 | Carbon steel | 8.8 | Zinc plated | Electrogalvanized | 10 | General machinery assembly |
| M8x40 | DIN 931 | 8 × 40 | 1.25 | Carbon steel | 10.9 | Zinc plated | Electrogalvanized | 13 | Structural fasteners |
| M10x25 | DIN 931 | 10 × 25 | 1.5 | Alloy steel | 8.8 | Black oxide | N/A | 17 | Automotive/machine assembly |
| M12x60 | DIN 931 | 12 × 60 | 1.75 | Stainless steel A2-70 | A2-70 | Passivated | N/A | 19 | Food-grade equipment |
| M16x40 | DIN 931 | 16 × 40 | 2.0 | Alloy steel | 10.9 | Zinc plated | Electrogalvanized | 24 | Heavy machinery |
| M20x60 | DIN 931 | 20 × 60 | 2.5 | Carbon steel | 8.8 | Zinc plated | HDG | 30 | Construction |
| M24x80 | DIN 931 | 24 × 80 | 3.0 | Alloy steel | 10.9 | Black oxide | N/A | 36 | Industrial equipment |
| M30x120 | DIN 931 | 30 × 120 | 3.5 | Alloy steel | 12.9 | Zinc plated | Electrogalvanized | 46 | Heavy-duty assembly |