Machine Screws
DIN933 M2 M2.5 M3 M4 M5 M6 M8 M8-1 M10 M10-1 M10-1.25 M12 M12-1.25 M12-1.5 M14 M14-1.5 M16 High-Strength 8.8/10.9/12.9 Grade Carbon Steel Hex Head Black Color full thread Bolt Screw
These DIN 933 metric hex head bolts are engineered for heavy-duty fastening, manufactured from premium carbon steel and heat-treated to meet 8.8, 10.9, or 12.9 strength grade specifications. Featuring a full thread design and durable black oxide finish, these bolts deliver exceptional tensile strength, consistent dimensional accuracy, and basic corrosion resistance for industrial and mechanical use.
DIN933 M2 M2.5 M3 M4 M5 M6 M8 M8-1 M10 M10-1 M10-1.25 M12 M12-1.25 M12-1.5 M14 M14-1.5 M16 High-Strength 8.8/10.9/12.9 Grade Carbon Steel Hex Head Black Color full thread Bolt Screw
🔹 Product Overview
These DIN 933 metric hex head bolts are engineered for heavy-duty fastening, manufactured from premium carbon steel and heat-treated to meet 8.8, 10.9, or 12.9 strength grade specifications. Featuring a full thread design and durable black oxide finish, these bolts deliver exceptional tensile strength, consistent dimensional accuracy, and basic corrosion resistance for industrial and mechanical use.
🔹 Specifications
| Item | Details |
|---|---|
| Standard | DIN 933 (ISO 4017 equivalent) |
| Material | High-strength carbon steel |
| Strength Grades | 8.8 / 10.9 / 12.9 (customizable) |
| Surface Finish | Black oxide (black color) for anti-rust & corrosion resistance |
| Thread Type | Full thread (coarse & fine thread options available) |
| Available Sizes | Coarse: M2, M2.5, M3, M4, M5, M6, M8, M10, M12, M14, M16 Fine: M8×1, M10×1 / M10×1.25, M12×1.25 / M12×1.5, M14×1.5 |
| Drive Type | External hexagon drive |
🔹 Key Features
✅ High Tensile Strength: Heat-treated carbon steel construction meets DIN standard performance requirements, ideal for high-stress and heavy-load fastening scenarios.
✅ Full Thread Design: Continuous thread along the entire shank ensures maximum engagement and uniform clamping force for secure connections.
✅ Black Oxide Finish: Matte black surface reduces light reflection, improves scratch resistance, and provides basic protection against rust and mild corrosion.
✅ Wide Compatibility: Both coarse and fine thread options available to match diverse application needs across industries.
✅ Precision Manufacturing: Strict adherence to DIN 933 standards ensures accurate thread pitch, consistent dimensions, and reliable performance.
🔹 Common Applications
These hex head bolts are widely used in:
- Mechanical equipment assembly & maintenance
- Automotive and heavy machinery manufacturing
- Construction and structural engineering
- Industrial equipment and tooling
- General fastening applications requiring durable, high-strength connections
🔹 Additional Notes
Custom specifications (special lengths, grades, or finishes) are available upon request. Please contact us for detailed size charts, bulk pricing, and technical support.
