High Tensile Grade 12.9 Socket Head Cap Screws - DIN 912 / ISO 4762

Engineered for the most demanding applications, our Grade 12.9 socket head cap screws provide unparalleled strength and reliability. These high tensile fasteners, also known as Allen head screws, are the definitive choice for engineers and professionals who require superior performance in high-stress environments. Manufactured from quenched and tempered alloy steel, they deliver exceptional clamping force and fatigue resistance, making them ideal for critical assemblies in machinery, automotive, and structural engineering.

Key Features & Benefits

• Superior Strength: Made from Grade 12.9 alloy steel, these bolts offer a minimum tensile strength of 1220 MPa, making them one of the strongest standard fasteners available for heavy-duty applications.
• Precision Engineering: Manufactured to the strict dimensional tolerances of DIN 912 and the equivalent ISO 4762 standards, ensuring a perfect fit and consistent performance across all metric sizes.
• High Torque Application: The internal hexagonal drive (Allen key socket) allows for high torque application without the risk of stripping the head, ensuring a secure and tight joint.
• Space-Saving Design: The cylindrical head is ideal for use in tight spaces or counter-bored holes where externally wrenched fasteners won't fit, providing a clean, low-profile finish.
• Self-Colour Finish: These screws feature a plain, self-colour (or black) finish with a light oil coating for minimal protection. This finish is suitable for internal applications where additional corrosion resistance is not required.

Versatile Applications Across Industries

The exceptional properties of our Grade 12.9 socket cap screws make them indispensable in a wide range of sectors:

• Automotive & Motorsport: Essential for engine components, transmission systems, suspension, and chassis assemblies where vibration and high stress are constant factors.[4, 17]
• Heavy Machinery & Tooling: Used extensively in machine tools, industrial manufacturing, dies, plastic injection molds, and earth-moving equipment that demand high clamping forces.[13, 18]
• Aerospace & Robotics: The high strength-to-weight ratio is critical for applications where performance and minimal weight are paramount.[17, 12]
• Structural & Construction: Provides robust and reliable connections for steel frameworks and securing heavy equipment.[4, 9]

Full Range of Metric Sizes

We offer a comprehensive selection of metric socket head cap screws to meet the specific requirements of your project. Our inventory covers a full range of diameters and lengths, ensuring you can find the precise industrial fastener for your needs.

Order Your High-Performance Fasteners Today

For applications where failure is not an option, trust our Grade 12.9 Socket Head Cap Screws to deliver the strength and reliability you need. Browse our selection to find the right size for your project. For bulk orders or technical inquiries, please contact our sales team.