Hex Socket Cup Point Set Screws DIN 913 | Alloy Steel | Shaft Fixing
Hex Socket Cup Point Set Screws DIN 913 | 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
Part | Type | Application Scenario |
Drive Type | Hex Socket | High-torque fastening (most common) |
| Slotted/Phillips | Light-duty, cost-sensitive scenarios |
Tip Style | Cup Point | High vibration resistance (embed depth: 0.5-1mm) |
| Flat Point | Surface protection (avoids indentation) |
| Dog Point | Precision alignment (cylindrical tip for guidance) |
| Nylon Insert | Anti-loosening (vibration environments) |
Product Parameter
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 |
