DIN 912
DIN 912 Hexagon Socket Head Cap Screws are the cornerstone of precision engineering, tooling, and high-performance machinery. Featuring a cylindrical head with an internal hex drive, these screws allow for installation in tight spaces where external wrenches cannot fit. Operating as a specialized manufacturer, we leverage state-of-the-art multi-station cold heading machines to produce DIN 912 screws with flawless internal socket geometry. This ensures maximum torque transfer without stripping, making them the preferred choice for applications demanding extreme clamping force and microscopic dimensional accuracy.
Key Dimensions & Scope
- M1.6 to M64 micro and macro sizing
- Precisely broached hex sockets for perfect Allen key fit
- Knurled heads available for manual pre-assembly
- Radiused under-head fillets to minimize stress concentrations
- Manufactured to Class A (precision) product grade tolerances
Common Grades & Materials
- Alloy Steel High Strength Grades (10.9, 12.9, 14.9)
- Stainless Steel (A2-70, A4-80) for clean environments
- Black oxide, Zinc flake, and specialized anti-corrosion finishes
Typical Applications
- Plastic injection molding and stamping dies
- Automotive engine internals and gearboxes
- Robotics, automation, and aerospace assemblies
Equivalent Standards
- ISO 4762 ↔ DIN 912
- EN 1102 ↔ DIN 912
Frequently Asked Questions: DIN 912
DIN 912 vs DIN 7991 (Socket Cap vs Countersunk)
| Feature | DIN 912 (Socket Cap) | DIN 7991 (Countersunk) |
|---|---|---|
| Head Profile | Cylindrical, protruding above surface | Flat, sits flush with the surface |
| Torque Capacity | Extremely high (Class 12.9 typical) | Lower due to reduced socket depth in countersink |
| Pre-drilling | Standard straight hole or counterbore | Requires precise 90° countersink tool |
| Application | High-stress machinery internals | Surface-critical applications (aerospace, covers) |
Factory Quality & Inspection Protocols
Our adherence to ISO 9001:2015 means every production batch of DIN 912 undergoes rigorous metallurgical and dimensional testing in our in-house laboratory prior to global export.
- Socket Depth Control: Broaching depth is strictly controlled to ensure maximum Allen key engagement without bottoming out.
- Decarburization Tests: Microscopic metallurgical cross-section analysis to ensure no carbon loss on the thread surfaces during heat treatment.
- Fatigue Resistance: Thread rolling performed after in-line heat treatment (on request) to induce compressive stresses, increasing fatigue life.
- Traceability: Every batch is stamped with our manufacturer ID and property class for total safety conformity.
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Typical Applications for DIN 912 Fasteners
Structural Construction
DIN 912 bolts are widely used in steel frame assemblies, bridges, and heavy structural joints requiring reliable clamping force.
Industrial Machinery
Suitable for general machinery, conveyor systems, flanged connections, and equipment assemblies where vibration resistance is essential.
Marine & Energy
Used in shipbuilding, offshore platforms, wind turbine towers and solar panel mounting structures with corrosion-resistant coatings.
Quality Assurance & Testing
- Hardness testing (Vickers / Rockwell) per ISO 898-1
- Dimensional control with CMM and thread gauges
- Salt spray corrosion testing (500–1000h)
- Tensile and proof load testing per batch
- Full traceability — heat number, mill certificates
- ISO 9001:2015 certified manufacturing facility
DIN 912 — Available Variants
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ISO 9001 certified manufacturer in Turkey. 1,600+ active SKUs. 24h response, worldwide shipping.