DIN SOCKET HEAD & SPECIALTY SCREWS
Precision Screws for Compact & High-Load Applications
DIN 912 | DIN 7991 | DIN 6912 | DIN 7984 | DIN 915 | DIN 916
Manufacturer & Exporter – Super Industries India
1. Introduction to DIN SOCKET HEAD & SPECIALTY SCREWS
DIN socket head and specialty screws are used where high clamping force, compact design, and precise tightening are required. These screws are widely used in machinery, tooling, automotive, robotics, molds, and high-precision equipment.
At Super Industries India, we manufacture DIN socket screws with controlled hardness, accurate hex sockets, and high surface finish, ensuring reliability in critical assemblies.
Super Industries
Global Manufacturer of Heavy & Custom Engineered Fasteners & Flanges
2. Types Covered on This Page
| DIN Standard | Screw Type |
|---|---|
| DIN 912 | Socket Head Cap Screws |
| DIN 7991 | Socket Countersunk Head Screws |
| DIN 6912 | Thin Cylindrical Head Screws |
| DIN 7984 | Low Head Socket Screws |
| DIN 915 | Set Screws with Full Dog Point |
| DIN 916 | Set Screws with Cup Point |
3. DIN 912 – Hexagon Socket Head Cap Screws
Overview
DIN 912 is the most common socket head screw, offering high tensile strength with compact head design.
Key Features
✔ Deep hex socket
✔ High preload capacity
✔ Ideal for automation
Typical Grades
- 8.8
- 10.9
- 12.9
4. DIN 7991 – Socket Countersunk Head Screws
Overview
DIN 7991 screws sit flush with the surface, ideal for smooth finishes.
Applications
- Machine covers
- Sliding components
Super Industries
Global Manufacturer of Heavy & Custom Engineered Fasteners & Flanges
5. DIN 6912 – Thin Cylindrical Head Screws
Overview
DIN 6912 offers a reduced head height while maintaining strength.
Use Cases
- Space-constrained assemblies
- Lightweight structures
6. DIN 7984 – Low Head Socket Screws
Overview
DIN 7984 screws are used where clearance is extremely limited.
Advantage
✔ Maintains high strength in low-profile design
7. DIN 915 – Set Screws with Full Dog Point
Overview
DIN 915 set screws provide positive axial location using a protruding dog point.
Common Uses
- Gears
- Pulleys
- Collars
8. DIN 916 – Set Screws with Cup Point
Overview
DIN 916 screws use a cup-shaped end to bite into the mating surface.
Benefits
✔ High holding power
✔ Vibration resistance
9. Materials Offered
- Alloy steel
- Stainless steel (A2 / A4)
- Brass (on request)
10. Surface Finishes
- Black oxide
- Zinc plated
- Stainless natural
- Custom coatings
11. Manufacturing Process
1️⃣ Cold forging
2️⃣ Thread rolling
3️⃣ Heat treatment
4️⃣ Socket broaching
5️⃣ Final inspection
12. Mechanical Properties
| Grade | Tensile Strength |
|---|---|
| 8.8 | 800 MPa |
| 10.9 | 1000 MPa |
| 12.9 | 1200 MPa |
13. Size Range
- M2 to M48
- Length up to 300 mm
14. Installation Best Practices
✔ Use correct hex key size
✔ Avoid over-torquing
✔ Use thread locker if needed
15. Socket Screws vs Hex Bolts
| Feature | Socket Screws | Hex Bolts |
|---|---|---|
| Head size | Compact | Larger |
| Aesthetics | Clean | Industrial |
| Torque | High | Moderate |
16. Quality Control
✔ Hex socket depth check
✔ Tensile testing
✔ Surface inspection
17. Export Packaging
- Small box packing
- Labelled cartons
- Palletized exports
18. Why Super Industries India?
✔ Precision socket broaching
✔ High-grade alloy steel
✔ Custom head designs
✔ Global exports
19. FAQs
Q: Are socket screws suitable for structural use?
Only in non-primary structural connections.
Q: Can you supply custom lengths?
Yes, customization available.