Alloy Steel Dacromet Hexagon Socket Head Cap Screw DIN912
Product Overview
The Alloy Steel Dacromet Hexagon Socket Head Cap Screw DIN912 is a high-performance fastening solution designed for demanding industrial applications where high mechanical strength and excellent corrosion resistance are required. Manufactured according to the DIN912 standard, this hexagon socket head cap screw features a full-thread design, a precision-machined cylindrical head, and an internal hex drive that enables secure tightening in confined spaces.
Produced from premium alloy steel and protected with a durable Dacromet coating, this fastener provides outstanding resistance to corrosion without hydrogen embrittlement. It is widely used in heavy machinery, automotive systems, renewable energy equipment, industrial automation, construction machinery, and OEM manufacturing.
Product Specifications
| Item | Specification |
|---|---|
| Standard | DIN912 |
| Product Name | Alloy Steel Dacromet Hexagon Socket Head Cap Screw |
| Material | Alloy Steel |
| Surface Finish | Dacromet Coating |
| Thread Type | Full Thread |
| Head Type | Cylindrical Socket Head |
| Drive Type | Internal Hex Socket |
| Diameter Range | M3–M36 |
| Length Range | 6 mm–300 mm |
| Strength Grade | 10.9 / 12.9 |
| Thread Direction | Right-Hand Thread |
| Packaging | Bulk Cartons, Small Boxes, Pallets |
| Customization | Size, Coating, Packaging, Marking |
Technical Parameters
| Property | Value |
|---|---|
| Tensile Strength | ≥1040 MPa (Grade 10.9) / ≥1220 MPa (Grade 12.9) |
| Yield Strength | ≥940 MPa / ≥1100 MPa |
| Hardness | HRC 32–44 |
| Density | Approximately 7.85 g/cm³ |
| Corrosion Resistance | Up to 500–1000 Hours Salt Spray (Depending on Coating Specification) |
| Operating Temperature | -40°C to +300°C |
| Thread Tolerance | 6g |
| Manufacturing Standard | DIN912 / ISO 4762 |
Materials and Manufacturing Process
The manufacturing process begins with the careful selection of certified alloy steel to ensure consistent chemical composition and mechanical performance.
High-volume production typically utilizes precision cold forging to create the screw head with excellent dimensional accuracy. Larger sizes may employ hot forging to optimize material flow and reduce internal stress.
After forging, CNC machining refines critical dimensions and ensures tight tolerances. Threads are produced through thread rolling rather than cutting, improving fatigue strength and thread integrity.
The screws then undergo quenching and tempering to achieve the required strength grade of 10.9 or 12.9.
A high-quality Dacromet coating is subsequently applied. Unlike traditional electroplating, Dacromet provides excellent corrosion protection while significantly reducing the risk of hydrogen embrittlement.
Finally, every batch is cleaned, inspected, sorted, and packaged according to customer specifications before shipment.
Applications of the Product
The Alloy Steel Dacromet Hexagon Socket Head Cap Screw DIN912 is widely used in numerous engineering industries, including:
- Construction machinery
- Heavy equipment manufacturing
- Industrial automation
- Automotive assembly
- Railway equipment
- Renewable energy systems
- Wind power installations
- Petrochemical facilities
- Mining machinery
- Material handling equipment
- Robotics
- Hydraulic systems
- Precision manufacturing
- OEM industrial equipment
Its high tensile strength and durable corrosion-resistant coating make it suitable for both indoor and outdoor service environments.
Why Choose This Product
This fastener offers several advantages for industrial users:
- Premium alloy steel raw material
- High-strength Grade 10.9 and 12.9 options
- Excellent Dacromet corrosion protection
- Reduced risk of hydrogen embrittlement
- Precision-manufactured threads
- Excellent clamping force
- Long service life
- Reliable performance under dynamic loads
- Suitable for demanding industrial environments
- Available for bulk purchasing
- OEM and ODM manufacturing support
- Fast global delivery
Why Choose Flybear
Flybear specializes in manufacturing and supplying industrial fasteners for customers worldwide.
Our capabilities include:
- Advanced cold forging and machining equipment
- Comprehensive inventory management
- Custom fastener manufacturing
- Engineering and technical support
- Flexible OEM and private-label production
- Global export experience
- Strict production scheduling
- Stable supply chain management
- Responsive customer service
We work closely with distributors, OEM manufacturers, EPC contractors, and industrial buyers to deliver consistent product quality and dependable supply.
Quality Inspection and Control
Every production batch undergoes comprehensive quality inspection, including:
- Chemical composition analysis
- Mechanical property testing
- Tensile strength verification
- Yield strength testing
- Hardness testing
- Salt spray corrosion testing
- Thread gauge inspection
- Dimensional measurement
- Surface coating inspection
- Visual appearance inspection
- Packaging verification
Production follows ISO quality management system requirements to ensure consistent product performance.
Selection Guide
Selecting the correct DIN912 socket head cap screw depends on several engineering factors:
- Required strength grade
- Fastener diameter
- Fastener length
- Applied load
- Installation environment
- Corrosion exposure
- Required service life
- Surface treatment requirements
- Assembly torque
- Industry standards
Proper fastener selection helps maximize equipment reliability and reduce maintenance costs.
FAQ
What is DIN912?
DIN912 is a German industrial standard specifying dimensions and technical requirements for hexagon socket head cap screws with full threads.
Why choose Dacromet coating?
Dacromet coating offers excellent corrosion resistance, high durability, and minimizes the risk of hydrogen embrittlement compared with conventional electroplating.
What strength grades are available?
The most common options are Grade 10.9 and Grade 12.9, both suitable for high-strength mechanical applications.
Can custom sizes be manufactured?
Yes. Custom diameters, lengths, coatings, head markings, and packaging are available based on project requirements.
How can I request a quotation?
Simply provide the required size, quantity, strength grade, coating requirement, and destination. Our engineering and sales teams will prepare a detailed quotation promptly.
Conclusion
The Alloy Steel Dacromet Hexagon Socket Head Cap Screw DIN912 combines high mechanical strength, precision manufacturing, and superior corrosion resistance, making it an excellent choice for demanding industrial fastening applications. Whether you require standard products or customized OEM solutions, Flybear can provide reliable manufacturing support and stable global supply.
We always adhere to the philosophy of quality first and customer first, providing customers with high-quality fastener products and one-stop fastener solutions.
For quotations, customization services, or technical assistance, please Contact Us.
