Description
Technical Parameters
Railway Screw Spikes - Technical Specifications
| Category | Specification |
|---|---|
| Definition | Threaded steel fasteners for securing rails to wooden sleepers with enhanced pull-out resistance |
| Primary Function | - Resist longitudinal/lateral forces - Prevent rail creep - Maintain gauge stability |
| Material | - Carbon steel: Q235B (GB), Grade 5 (AREMA) - Coating: Hot-dip galvanized (≥85μm) |
Screw Spike Types Comparison
| Type | Thread Design | Head Type | Best Application |
|---|---|---|---|
| Standard | Continuous thread | Hexagonal (32mm) | Mainline tracks |
| Tapered Shank | Partial thread (lower 2/3) | Square (25mm) | Softwood sleepers |
| Shouldered | Double-start thread | Flanged (40mm) | Heavy-haul curves (>400m radius) |
Performance Data
| Sleeper Material | Pull-out Resistance | Recommended Preload |
|---|---|---|
| Oak hardwood | 35-40kN | 25kN |
| Teak | 40-45kN | 28kN |
| Pine (treated) | 22-25kN | 18kN |
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