Hexagon Socket Head Cap Hex Allen Key Bolt is what I supply to engineers and procurement pros who need reliable performance in machinery and assembly lines. As a China-based manufacturer, I offer tested zinc-plated and heat-treated fasteners that stand up to demanding environments. My Hexagon Socket Head Cap Hex Allen Key Bolt features precise hex socket engagement, high-tensile steel, thread pitches from M3 to M12, and grading options. I understand B2B buyers value consistent dimensions, batch traceability, and competitive pricing, so I provide certificates, lot tracking, and flexible packaging. You can count on quick lead times, responsive service, and tailored solutions for auto, electronics, and construction industries. From our factory floor to your inventory, I ensure quality control at every stage and ship worldwide. If you're shopping for a dependable supplier in China, a manufacturer who can scale with your demand, let's discuss your specs and quantities.
Hex socket head cap screws, commonly known as Allen bolts, offer a compact head profile with high tensile strength, delivering reliable clamping in machinery, automotive assemblies, electronics enclosures, and precision equipment. A true market leader earns trust with tight dimensional control, consistent heat treatment, and uniform thread quality, ensuring superb performance under vibration and dynamic loads. For global buyers, the value lies in traceable material grades (such as high-strength alloy steel, stainless variants), corrosion-resistant finishes, and DIN/ISO-compliant tolerances. Leading suppliers provide full QC documentation, material certificates, and test reports, plus flexible packaging, scalable lead times, and robust supply chains. Customization covers length, thread pitch, head style, and surface finishes to meet exact design specs while ensuring interchangeability across regions. Aligned with sustainable production, optimized logistics, and a quality-first approach, hex Allen key bolts remain a dependable choice for any project demanding durability and repeatable performance. Global procurement teams benefit from consistent quality, competitive pricing, and reliable on-time delivery as requirements evolve.
| Size | Allen Key Size (mm) | Thread Pitch (mm) | Material | Standard | Tensile Strength (MPa) | Hardness (HRC) | Surface Finish | Typical Length Range (mm) |
|---|---|---|---|---|---|---|---|---|
| M3 | 2.5 | 0.50 | Alloy steel, Grade 8.8 | DIN 912 / ISO 4762 | 800-1000 | 32-39 | Zinc plated | 6-25 |
| M4 | 3.0 | 0.70 | Stainless steel A2-70 | DIN 912 / ISO 4762 | 520-700 | 18-25 | Passivated | 8-60 |
| M5 | 4.0 | 0.80 | Alloy steel, Grade 8.8 | ISO 4762 / DIN 912 | 800-950 | 34-39 | Black oxide | 8-50 |
| M6 | 5.0 | 1.00 | Alloy steel, Grade 10.9 | DIN 912 / ISO 4762 | 900-1000 | 46-50 | Black oxide | 10-60 |
| M8 | 6.0 | 1.25 | Alloy steel, Grade 8.8 | DIN 912 / ISO 4762 | 800-1000 | 40-46 | Zinc plated | 12-90 |
| M10 | 8.0 | 1.50 | Alloy steel, Grade 10.9 | DIN 912 / ISO 4762 | 900-1000 | 42-50 | Black oxide | 15-100 |
| M12 | 10.0 | 1.75 | Alloy steel, Grade 12.9 | DIN 912 / ISO 4762 | 1000-1200 | 50-56 | Black oxide | 20-120 |