DIN 912 12.9 Grade Hex Socket Head Cap Screws
Product Overview
DIN 912 12.9 Grade Hex Socket Head Cap Screws are premium high-strength fasteners designed for heavy-duty and high-precision industrial applications. Manufactured from high-quality carbon steel and heat treated for superior mechanical properties, these screws adopt a durable black oxide surface finish to deliver excellent hardness, wear resistance and reliable anti-corrosion performance. Built strictly in accordance with DIN 912 international standards, their precise dimensional tolerance and standard thread structure ensure smooth installation and stable clamping force. Featuring an ultra-high 12.9 strength grade, these screws resist heavy loads, high pressure and continuous vibration, providing long-term reliable fastening for machinery, steel structures, automotive systems, power equipment and high-end industrial projects.
Core Advantages
- Ultra-High 12.9 Strength Grade: As one of the highest strength levels for standard fasteners, 12.9 grade steel offers outstanding torque resistance and load-bearing capacity, perfectly suitable for harsh and high-stress working environments.
- Precision DIN 912 Standard Machining: Strictly manufactured to DIN 912 specifications with high-precision thread and consistent dimensions, ensuring excellent compatibility, minimal assembly errors and long-term structural stability.
- Enhanced Corrosion & Wear Resistance: Professional black oxide surface treatment effectively prevents oxidation and rust formation, improving wear resistance and extending service life in humid and mildly corrosive conditions.
- Complete & Customizable Specifications: Available in a full range of sizes from M6 to M36 in thread diameter and 16mm to 85mm in length. Custom non-standard sizes are supported to meet unique project demands.
- Wide Industrial Compatibility: Ideal for mechanical manufacturing, steel structure engineering, automotive production, aerospace equipment and power facility installation, covering diverse high-standard industrial fastening scenarios.
Technical Parameters
| Parameter | Details |
|---|---|
| Material | High-quality Carbon Steel |
| Surface Treatment | Plain, Zinc Plated, Black Oxide |
| Strength Grade | 4.8 / 8.8 / 10.9 / 12.9 (12.9 Grade Main) |
| Standard | DIN 912 |
| Origin | Hebei, China |
| Application | Construction, Industrial Machinery, Automotive, Aerospace, Power Equipment |
Application Fields
- Mechanical Manufacturing: Fastening precision components for machine tools, pumps and transmission systems to ensure stable equipment operation.
- Steel Structure Engineering: Reliable connection and fixation for bridges, factory buildings, towers and large steel structures.
- Automotive Industry: Securing critical parts including engines, chassis and vehicle body assemblies.
- Aerospace Industry: Providing lightweight and high-strength fastening solutions for aircraft, satellites and premium precision equipment.
- Power Equipment: Stable assembly and connection for transformers, switchgear and power transmission infrastructure.
Customization Services
We provide flexible personalized customization services to satisfy unique project requirements. Custom thread sizes, lengths, surface treatments such as galvanizing and Dacromet, and exclusive packaging solutions are available according to customer demands (MOQ applies).
Quality Assurance
All products are produced under the ISO9001 quality management system. We conduct strict full-process inspection from raw material testing to finished product delivery. Every batch of screws is tested for dimension accuracy, hardness and mechanical performance to guarantee stable and consistent quality for your projects.
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