DIN912 High Strength Black Oxide Socket Head Cap Screw
DIN912 high strength black oxide socket head cap screw is a premium fastening solution engineered for heavy-duty mechanical applications requiring exceptional tensile strength, high torque transmission, and reliable long-term performance. The DIN912 high strength black oxide socket head cap screw is manufactured in accordance with DIN912 standards and is widely used in machinery manufacturing, automation equipment, mold making, automotive engineering, construction machinery, and industrial production lines.
Featuring a cylindrical head with an internal hex drive, the DIN912 high strength black oxide socket head cap screw provides excellent clamping force while allowing installation in confined spaces. The black oxide finish enhances surface protection, improves appearance, and minimizes light reflection for industrial applications.
Product Overview
The DIN912 high strength black oxide socket head cap screw is designed for precision mechanical assemblies where high preload, secure fastening, and repeated tightening are required. Manufactured from premium alloy steel, it offers outstanding mechanical strength and excellent fatigue resistance.
This DIN912 high strength black oxide socket head cap screw is ideal for applications involving heavy loads, vibration, and dynamic forces. The internal hex drive enables higher tightening torque than conventional screws, reducing the risk of head damage during installation.
As one of the most commonly used industrial fasteners, it provides dependable fastening performance for OEM manufacturers, equipment builders, and engineering contractors worldwide.
Product Specifications
| Item | Description |
|---|---|
| Standard | DIN912 |
| Product Name | DIN912 High Strength Black Oxide Socket Head Cap Screw |
| Material | Alloy Steel |
| Thread Type | Metric Machine Thread |
| Head Type | Cylindrical Socket Head |
| Drive Type | Internal Hex (Allen) |
| Diameter Range | M2–M36 |
| Length Range | 4mm–300mm |
| Surface Finish | Black Oxide |
| Strength Grade | 8.8 / 10.9 / 12.9 |
| Thread Direction | Right Hand |
| Packaging | Bulk Carton / Small Box / OEM Packaging |
| Customization | Size, strength grade, thread, marking, packaging |
Technical Parameters
| Parameter | Value |
|---|---|
| Tensile Strength | Grade 8.8: ≥800 MPa / Grade 10.9: ≥1,040 MPa / Grade 12.9: ≥1,220 MPa |
| Yield Strength | Grade 8.8: ≥640 MPa / Grade 10.9: ≥940 MPa / Grade 12.9: ≥1,100 MPa |
| Hardness | HRC 22–39 (depending on grade) |
| Density | 7.85 g/cm³ |
| Corrosion Resistance | Moderate (enhanced by black oxide treatment) |
| Operating Temperature | -40°C to 300°C |
| Thread Tolerance | 6g |
| Manufacturing Standard | DIN912 / ISO 4762 |
Materials and Manufacturing Process
The DIN912 high strength black oxide socket head cap screw is manufactured using advanced production technology to ensure superior strength, dimensional accuracy, and consistent quality.
- Premium alloy steel raw material selection
- Precision cold heading for cylindrical head formation
- Internal hex socket forming with high dimensional accuracy
- Thread rolling to improve fatigue strength and thread precision
- Quenching and tempering to achieve Grade 8.8, 10.9, or 12.9 mechanical properties
- Black oxide surface treatment for improved appearance and light corrosion protection
- Ultrasonic cleaning to remove manufacturing residues
- Comprehensive dimensional and mechanical inspection
- Export-grade packaging for secure transportation
Each DIN912 high strength black oxide socket head cap screw is manufactured under strict process control to ensure reliable industrial performance.
Applications of the Product
DIN912 high strength black oxide socket head cap screws are widely used in:
- Industrial machinery
- CNC machine tools
- Mold and die manufacturing
- Automotive manufacturing
- Robotics and automation equipment
- Construction machinery
- Hydraulic and pneumatic systems
- Renewable energy equipment
- Heavy industrial manufacturing systems
The compact head design and high-strength construction make them ideal for high-load applications with limited installation space.
Why Choose This Product
- Manufactured according to DIN912 international standard
- High-strength alloy steel construction
- Available in Grade 8.8, 10.9, and 12.9
- Excellent torque transmission through internal hex drive
- Outstanding fatigue resistance
- Black oxide finish provides attractive appearance and basic corrosion protection
- Suitable for automated assembly systems
- Stable mechanical performance under dynamic loads
- OEM and ODM customization available
The DIN912 high strength black oxide socket head cap screw provides exceptional fastening reliability for demanding industrial environments.
Why Choose Flybear
Flybear specializes in manufacturing precision industrial fasteners for customers worldwide.
Our advantages include:
- Advanced cold forging and precision machining equipment
- Complete heat treatment and black oxide production lines
- Large inventory for fast delivery
- OEM and ODM manufacturing services
- Engineering support for customized fastening solutions
- Strict ISO quality management system
- Global export experience across multiple industries
- Professional technical consultation throughout your project
Flybear is committed to delivering reliable fastening products that meet international engineering standards.
Quality Inspection and Control
Every production batch undergoes comprehensive inspection, including:
- Chemical composition analysis
- Tensile strength testing
- Yield strength verification
- Hardness testing
- Salt spray testing (when required)
- Thread gauge inspection
- Dimensional inspection
- Internal hex socket inspection
- Surface finish inspection
- Packaging inspection
All manufacturing processes comply with ISO quality management requirements.
Selection Guide
When selecting a DIN912 high strength black oxide socket head cap screw, consider:
- Required strength grade (8.8, 10.9, or 12.9)
- Bolt diameter and length
- Working load requirements
- Installation space
- Indoor or outdoor operating environment
- Corrosion protection requirements
- Required tightening torque
Choosing the appropriate specification improves equipment safety, durability, and operational reliability.
FAQ
1. What is DIN912?
DIN912 is the international standard for hex socket head cap screws with cylindrical heads.
2. What strength grades are available?
Common grades include 8.8, 10.9, and 12.9 for different load requirements.
3. What is the purpose of the black oxide finish?
It provides light corrosion protection, reduces glare, and gives the screw a professional industrial appearance.
4. Can these screws be used in high-load applications?
Yes. Grade 10.9 and Grade 12.9 versions are specifically designed for heavy-duty mechanical assemblies.
5. Can Flybear manufacture custom specifications?
Yes. We provide customized sizes, materials, surface treatments, markings, and packaging based on customer requirements.
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, OEM customization, or technical assistance, please Contact Us.
