Rail Dog Spike Fastening System
The Railway Dog Spike is a traditional fastener used to fix rails onto wooden sleepers. Made from forged carbon steel, its angled head provides a solid target for hammer driving. The smooth tapered shank and sharp chisel point penetrate wood easily, creating secure friction-based holding. Commonly applied in mining tracks, industrial sidings, and temporary lines, this simple fastener remains a cost-effective choice for light to medium rail loads where modern elastic systems are unnecessary.
Technical Specifications:
| Parameter | Value | Remark |
|---|---|---|
| Material | Low carbon steel | Q235 or A36 |
| Length | 125 – 165 | mm |
| Shank diameter | 14 – 16 | mm |
| Head type | Offset dog ear | Hammer face |
| Point type | Chisel | Self-penetrating |
| Finish | Black oiled | Basic |
| Finish option | Hot-dip galvanized | Anti-corrosion |
| Pull-out force | 6 – 12 | kN |
| Standard | AREMA / BS / GOST | Various |
Installation & Maintenance Perspective:
- Loose spikes are re-driven with a few hammer blows on site.
- Damaged spikes pull out using standard claw bar tools.
- Enlarged spike holes accept wooden plugs for renewed grip.
- No torque measurement or specialized gauges are required for repair.
- Replacement cost is minimal compared to elastic fasteners.
Maintenance & Operational Perspective
- Holding power weakens as wood fibers dry and shrink over years.
- Repeated train vibrations gradually loosen spike grip in sleeper.
- Corrosion accelerates in moist or chemically treated timber environments.
- Heavy axle loads may cause spike head to indent soft rail base.
- Curved tracks require more frequent re-driving than straight sections.
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