Hex Socket Cup Point Set Screws DIN 914 | Alloy Steel | Shaft Fixing
Hex Socket Cup Point Set Screws DIN 914 | Alloy Steel | Shaft Fixing
Set screws are headless screws that axially secure and prevent rotation by embedding their tapered or grooved ends into the surface of fastened components.
Core Functions:
Fix circumferential position between shafts and hubs (e.g., gears, pulleys)
Prevent axial displacement of bearings, couplings, etc.
Simplify assembly by replacing key connections
Key Structural Features
Item | Standard Range | Remarks |
Material | Carbon Steel (4.8/8.8/12.9) | Grade 12.9: Tensile ≥1220MPa |
| Stainless (A2-70/A4-80) | A4-80: Seawater corrosion-resistant |
Surface Treatment | Zinc Plated, Black Oxide | Zinc ≥5μm (48h salt spray test) |
| Dacromet Coating | Salt spray >480h (heavy corrosion resistance) |
Thread Size | M1.6 - M24 | Fine thread (M8×0.75) enhances anti-loosening |
Torque Requirements | M6 Screw: 5-7 N·m | Use threadlocker for vibration resistance |
Key Structural Features
Key Applications:
- Mechanical Transmission
Securing pulleys to motor shafts
Axial retention of gears in reducers
- Precision Instruments
Locking focus rings in optical tubes
Bearing preload in machine tool spindles
- Automotive Industry
Fixing synchronizer rings in transmissions
Anti-rotation for steering column U-joints
- Furniture Assembly
Locking gas springs in office chairs
