Alloy Steel Grade 12.9 DIN912 Hex Socket Head Cap Screws
DIN912 Hex Socket Head Cap Screws are one of the most commonly used mechanical fasteners in industrial applications. Known for their high strength and compact profile, they are essential in precision assemblies where space and torque requirements are critical. These screws are defined by the German DIN standard 912 and are typically driven using a hex key or Allen wrench, offering robust mechanical properties and clean aesthetics.
Flybear Fastener offers a wide range of DIN912 socket cap screws made of high-strength Class 12.9 alloy steel, designed to meet the highest performance demands.
Product Specifications
| Specification | Details |
|---|---|
| Standard | DIN 912 |
| Thread Type | Metric coarse |
| Drive Type | Hex Socket (Allen) |
| Head Type | Cylindrical/Cap Head |
| Material | Alloy Steel |
| Strength Grade | 12.9 |
| Surface Finish | Black Oxide, Zinc Plated |
| Sizes Available | M3 – M100 |
| Length Range | 6mm – 300mm |
Technical Parameters
| Property | Value |
|---|---|
| Tensile Strength | ≥ 1220 MPa |
| Yield Strength | ≥ 1100 MPa |
| Hardness | 39 – 44 HRC |
| Thread Tolerance | 6g |
| Elongation at Break | ≥ 8% |
| Minimum Thread Depth | As per DIN 912 standard |
Material and Manufacturing Process
DIN912 Hex Socket Head Cap Screws from Flybear Fastener are manufactured using top-grade alloy steel, heat-treated to meet Class 12.9 mechanical properties. The production process includes:
- Cold or hot forging to shape the screw.
- Thread rolling for precise thread forming.
- Heat treatment for achieving desired strength and hardness.
- Surface coating for enhanced corrosion resistance.
- Dimensional and quality inspections.
Common surface finishes include black oxide for minimal friction and improved corrosion resistance, zinc plating, and phosphate coating depending on customer requirements and application environments.
Typical Applications and Industries
DIN912 Hex Socket Head Cap Screws are widely utilized in:
- Automotive assemblies
- Machinery and equipment installations
- Aerospace components
- Agricultural machinery
- Industrial robotics and automation
- Electronics and electrical enclosures
- Military and defense equipment
Their compact head style and high strength make them especially suitable where assembly space is constrained or where high clamp forces are required.
Competitive Advantages
Our screws stand out in the market due to:
- Premium Materials: Top-quality Class 12.9 alloy steel ensures peak performance under stress.
- Precision Engineering: Accurate dimensional tolerances and thread conformity enhance fit and lifespan.
- Advanced Surface Treatments: Extended corrosion resistance through zinc plating or phosphate finishes.
- Customization Capability: We accept bulk orders with custom size, thread pitch, or finishing—as per drawings or prototypes.
- Reliable Stock & Delivery: Large inventory to guarantee timely deliveries.
- Technical & After-Sales Support: Responsive customer service and engineering consultation.
Quality Control and Testing
At Flybear Fastener, quality is paramount. Our QC process covers:
- Raw material inspection with certification traceability
- In-process inspection for thread precision and tolerances
- Heat-treatment hardness testing
- Salt spray and coating thickness tests
- Final product inspection before packaging
These procedures ensure that each bolt performs to the expectations of high-precision industries.
Selection and Procurement Guide
To select the correct DIN912 Hex Socket Cap Screw:
- Define the mechanical load and choose appropriate thread size & length.
- Confirm whether alloy steel with Grade 12.9 is compatible with other assembly materials.
- Consider environmental exposure when selecting coating.
- Ensure proper drive tool (hex socket wrench) availability.
- For customized or bulk orders, always request technical drawings for precise manufacturing.
Feel free to contact us for more detailed assistance.
Additional Product Insights
For applications that require even higher torque or security, DIN912 socket cap screws are often used together with hardened washers or thread-locking compounds to prevent loosening under vibration. In situations with limited access to the bolt head, right-angle hex drivers or ball-end hex tools may be required.
Customized head recess designs and special coatings like Dacromet or Geomet treatments are also available upon request.
Conclusion and Company Overview
Choosing Flybear Fastener means opting for engineering excellence and reliable quality. We are committed to delivering premium-grade fastener products to global industries. Our team offers one-stop solutions tailored to the technical requirements of every client.
We have a solid reputation for attentive service, precision manufacturing, and technical support. Our agile production capability, fast delivery logistics, and commitment to quality make us a trusted supplier.
We invite you to explore our product catalog online, or contact us to discuss custom orders, RFQs, and industry-specific design solutions.
We always adhere to the principle of “Quality First, Customer Supreme,” and strive to provide our clients with high-quality fastener products and one-stop fastener solutions.
Follow Me!
