Socket Head Bolts KN-7991
DIN 7991 / ISO 10642 Countersunk Socket Screw
- Standard
- DIN 7991 / ISO 10642
- Thread size
- M3 – M20
- Length range
- 8 – 100 mm
DIN 912 / ISO 4762 Socket Head Cap Screw (12.9)
Socket Head Bolts
KN-912
Socket Head Bolts Product Code: KN-912
DIN 912 / ISO 4762 Socket Head Cap Screw (12.9)
The standard of machinery and mold making: class 12.9, black oxide, M3-M36.
- Standard
- DIN 912 / ISO 4762
- Thread size
- M3 – M36
- Length range
- 6 – 200 mm
- Strength class
- 8.8 / 10.9 / 12.9 / A2-70
- M3 – M36, 6 – 200 mm
- Class 12.9, 39-44 HRC hardness
- Black oxide or Geomet, stainless A2-70
- Rolled thread for high fatigue strength
- Precise socket tolerance for torque wrench fit
Catalogs, Price Lists and Certificates
General Product Catalog 2026 Anchor Systems Catalog DIN – ISO Cross-Reference Table
| Feature | KN-912 |
|---|---|
| Standard | DIN 912 / ISO 4762 |
| Thread size | M3 – M36 |
| Length range | 6 – 200 mm |
| Strength class | 8.8 / 10.9 / 12.9 / A2-70 |
| Hardness | 39 – 44 HRC (12.9) |
| Coating | Black oxide, Geomet, plain |
| Packaging | Carton: 100 – 1,000 pcs |
DIN 912 socket cap screws, with a cylindrical head and hex socket, can be recessed into tight spaces and tightened with high preload. They are made from class 12.9 heat-treated steel and are common in machine tools, molds and robotics.
Key features
- M3 – M36, 6 – 200 mm
- Class 12.9, 39-44 HRC hardness
- Black oxide or Geomet, stainless A2-70
- Rolled thread for high fatigue strength
- Precise socket tolerance for torque wrench fit
Standard sizes ship from stock the same day; special lengths and coatings take 10-15 business days. Every lot comes with an EN 10204 3.1 certificate. Use the sample request form to ask for up to 50 free samples.
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