12.9 Grade DIN912 machine screws are high-strength fasteners engineered with a hex socket drive, cylinder cup head, and super long half-thread design, tailored for industrial, mechanical, and heavy-duty assembly applications. Covering sizes M3 to M16, these screws are crafted to 12.9 grade specifications—delivering exceptional tensile strength, hardness, and load-bearing capacity, making them ideal for high-stress scenarios like machinery construction, equipment installation, and precision engineering projects.
The cylinder cup head offers a smooth, rounded profile that balances aesthetic appeal with structural stability, while the hex socket drive ensures a secure torque grip for easy installation and removal with standard tools. The super long half-thread design combines extended length for deep penetration into workpieces with partial threading, enhancing stability by allowing tight engagement with tapped holes while minimizing stripping risks. Fully compliant with DIN912 standards, these screws guarantee consistent dimensional accuracy, thread precision, and universal compatibility with industrial components.
Built for durability, they resist wear, deformation, and fatigue under repeated use, maintaining reliable performance in both indoor and outdoor industrial environments. Whether for securing heavy machinery parts, assembling structural components, or precision fixtures, these screws balance high strength, functional design, and ease of use to meet the rigorous demands of professional applications.
Core Features & Advantages
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12.9 High-Strength Grade: Exceptional tensile strength and hardness for heavy-duty, high-stress applications.
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DIN912 Compliance: Adheres to international standards, ensuring precision, thread accuracy, and broad compatibility.
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Hex Socket & Cylinder Cup Head: Secure torque transmission with standard tools; smooth, stable head profile for reliable fixation.
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Super Long Half-Thread: Extended length for deep penetration; partial threading reduces stripping and boosts stability.
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M3-M16 Size Range: Versatile coverage for small to medium industrial components and heavy-duty assemblies.
Key Specifications
- Grade: 12.9 High-Strength
- Standard: DIN912
- Drive Type: Hex Socket (Hexagonal)
- Head Type: Cylinder Cup Head
- Design: Super Long, Half-Thread, Machine Screw
- Sizes: M3 - M16
- Applications: Industrial Machinery, Equipment Installation, Precision Engineering, Structural Assemblies, Heavy-Duty Fixtures
- Performance: High Tensile Strength, Wear-Resistant, Deformation-Resistant, Secure Torque Grip
