DIN 960 Hex Cap Screw (Fine Thread, Partial)
DIN 960 Hex Cap Screws – Fine Thread, Partial
ISO Equivalent: ISO 8765 | Metric Hex Bolts – Fine Pitch, Partial Thread
DIN 960 defines fine thread hex cap screws with partial threading — specialized fasteners for vibration-critical applications. The fine pitch provides superior resistance to loosening, while the unthreaded shank delivers shear strength where loads demand it.
Quick Specifications
Why Fine Thread?
Vibration Resistance
Smaller helix angle = higher resistance to self-loosening under dynamic loads. Essential for rotating equipment.
Precise Torque Control
More threads per mm means finer tension adjustment. Critical for applications requiring specific preload.
Higher Tensile Stress Area
Shallower threads = larger minor diameter = ~10% more tensile strength than coarse thread of same size.
Thin-Wall Applications
More threads engage in thinner material. Ideal for sheet metal, tubes, and hollow sections.
Dimension Chart – Fine Thread
| Size | Pitch (Fine) | Coarse Pitch | Head Width (s) | Wrench Size |
|---|---|---|---|---|
| M8×1 | 1.0 mm | 1.25 mm | 13.0 mm | 13 mm |
| M10×1.25 | 1.25 mm | 1.5 mm | 16.0 mm | 16 mm |
| M12×1.5 | 1.5 mm | 1.75 mm | 18.0 mm | 18 mm |
| M14×1.5 | 1.5 mm | 2.0 mm | 21.0 mm | 21 mm |
| M16×1.5 | 1.5 mm | 2.0 mm | 24.0 mm | 24 mm |
| M18×2 | 2.0 mm | 2.5 mm | 27.0 mm | 27 mm |
| M20×2 | 2.0 mm | 2.5 mm | 30.0 mm | 30 mm |
| M22×2 | 2.0 mm | 2.5 mm | 32.0 mm | 32 mm |
| M24×2 | 2.0 mm | 3.0 mm | 36.0 mm | 36 mm |
| M30×2 | 2.0 mm | 3.5 mm | 46.0 mm | 46 mm |
⚠️ Fine pitch MUST be specified when ordering (e.g., "M12×1.5" not just "M12")
Property Classes
Coarse vs Fine Thread Comparison
💡 Key Differences
| Property | Coarse (DIN 931) | Fine (DIN 960) |
|---|---|---|
| Vibration Resistance | Good | Excellent |
| Assembly Speed | Fast | Slower |
| Torque Adjustment | Standard | Finer Control |
| Tensile Strength | Standard | ~10% Higher |
| Thread Stripping | More Resistant | More Prone |
| Soft Materials | Recommended | Not Ideal |
Common Applications
Shop DIN 960 Fine Thread Hex Bolts
Fine pitch, partial thread hex cap screws in Class 8.8, 10.9, and 12.9.
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