Grade 12.9 Alloy Steel Dacromet DIN912 Allen Screws
DIN912 Allen Screws are a key element in high-performance assemblies, prized for their exceptional strength, precision threading, and superior corrosion resistance. Engineered to meet the stringent DIN912 standard, these socket head cap screws serve as vital components in automotive, aerospace, machinery, and construction industries, particularly where space is limited or precise fastening is needed. Manufactured from Grade 12.9 alloy steel and enhanced with Dacromet coating, these fasteners deliver both tensile strength and outstanding durability in harsh environments.
At Flybear Fastener, our high-quality DIN912 screws represent the perfect combination of robustness and reliability for demanding applications.
Product Overview
DIN912 Allen Screws, also known as socket head cap screws, are a type of cylindrical head screw with internal hex drive, designed for applications requiring torque or where space constraints limit the use of traditional hex bolts. Compliant with the DIN912 international standard, these screws are predominantly used in mechanical engineering applications demanding reliability under high-load or high-stress conditions. The use of Class 12.9 alloy steel ensures high tensile strength, while Dacromet coating provides exceptional resistance to rust, corrosion, and heat.
Popular in assembly lines and high-vibration environments, these fasteners are ready to perform in the most challenging scenarios.
Product Specifications Table
| Parameter | Specification |
|---|---|
| Product Name | DIN912 Allen Screws |
| Standard | DIN 912 |
| Drive Type | Allen (Hex Socket) |
| Thread Type | Metric Thread |
| Head Style | Socket Head Cap |
| Material | Grade 12.9 Alloy Steel |
| Coating | Dacromet (Anti-corrosive) |
| Tensile Strength | ≥ 1220 MPa |
| Sizes Available | M3 to M100 |
| Length Range | 6mm to 300mm |
Technical Data
| Mechanical Property | Value (Grade 12.9) |
|---|---|
| Proof Load | 1100 MPa |
| Yield Strength | ≥ 1100 MPa |
| Hardness | 385 – 435 HV |
| Elongation | ≥ 9% |
| Surface Treatment Test | 720 Hours Salt Spray |
Material Details & Manufacturing Process
These DIN912 Allen Screws are made using high-grade alloy steel, heat-treated to meet Grade 12.9 mechanical requirements. The production process includes cold forging for consistent head and thread dimension, followed by precision machining to achieve tight tolerances. The final step involves Dacromet coating, a zinc and aluminum-based finish widely used for high-level corrosion resistance.
Dacromet treatment ensures superior environmental durability, 1000+ hours of salt spray resistance, and provides a thin, uniform protective layer without hydrogen embrittlement.
Common Applications and Industry Usage
DIN912 Allen Screws are widely used in applications requiring high clamping force in restricted spaces. Typical industries include:
- Automotive assemblies (engine blocks, transmission systems)
- Aerospace and defense applications
- Heavy machinery and lifting equipment
- Electronics and robotics
- Hydraulic and pneumatic equipment
- DIY metal fabrications and equipment enclosures
Their hexagonal internal drive allows high torque transfer without head stripping, making them ideal for automation assembly lines and critical-load areas.
Product Advantages and Competitive Edge
Material Excellence: Using Grade 12.9 alloy steel, these screws offer unmatched tensile strength and toughness for critical-load connections.
Precision Engineering: Manufactured with tight machining tolerances for error-free fitting and exceptional thread quality.
Advanced Surface Protection: Dacromet coating offers up to 3 times better corrosion resistance than traditional zinc plating, ideal for outdoor or salt-prone environments.
Flexibility and Customization: Able to provide custom dimensions, threads, and coatings based on customer drawings or samples.
Robust Inventory & Fast Delivery: Ample warehousing space ensures timely order fulfillment for international and domestic customers.
After-Sales Service & Technical Support: We provide unparalleled technical assistance and post-sale services to ensure customer satisfaction.
Quality Control and Testing
At Flybear Fastener, quality is at the core of our operations. Every batch of DIN912 Allen Screws undergoes a rigorous series of tests, including:
- Dimensional inspection
- Torque and tensile testing
- Salt spray corrosion testing
- Thread gauge verification
- Material composition testing via spectrometer
Our ISO-certified quality management ensures consistency, traceability, and superior performance in every screw we deliver.
Selection & Procurement Guide
When choosing the right DIN912 Allen Screw for your project, consider the following:
- Load-bearing requirements: Select the proper tensile strength (12.9 grade meets high-load demands)
- Coating preference: Dacromet is suited for high-moisture, outdoor, or marine environments
- Size compatibility: Ensure proper thread length and diameter according to application requirements
- Assembly method: Choose internal socket dimensions compatible with your existing tools
Explore our technical catalogs and datasheets, or contact us for customized support.
Additional Notes based on Product Features
Thanks to their high tensile strength and corrosion resistance, DIN912 Allen Screws are especially useful in energy sector equipment, marine structures, and even solar panel racking systems subjected to long-term environmental exposure. Their sleek head design also makes them a preferred choice for aesthetic installations, including premium furniture, bicycle frames, and precision laboratory equipment.
Conclusion & Company Promotion
Choosing a reliable partner like Flybear Fastener for your DIN912 Allen Screws gives you access to a full range of precision-engineered fasteners backed by professional support and efficient logistics.
We always adhere to the principle of “Quality First, Customer Supreme,” and are committed to providing customers with high-quality fastener products and one-stop fastening solutions. Our engineering team is ready to assist with selection, application advice, and custom request evaluations. Feel free to contact us today to get expert advice and competitive pricing.
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