Description
Technical Parameters
Railway Screw Spike
| Category | Specification | Details / Value |
|---|---|---|
| Product Name | Railway Screw Spike (Also known as: Lag Screw Spike, Coach Screw) | |
| Primary Function | To create a high-strength, threaded connection for securing rails, baseplates, or special fittings to wooden or composite sleepers. | |
| Design Principle | Functions as a large, heavy-duty wood screw. The threaded portion cuts into the sleeper material, creating a strong, durable grip that is more resistant to loosening under vibration than dog spikes. | |
| Material | Medium Carbon Steel (e.g., Grade 45, C1045). | |
| Coating/Finish | Standard | Hot-Dip Galvanized to ASTM A153 or equivalent. Essential for corrosion resistance. |
| Alternative | Black (Uncoated) for temporary or indoor use. | |
| Installation | Tool Required | High-torque impact wrench (pneumatic/hydraulic) or manual wrench with large lever arm. Requires a specific driving socket. |
| Installation Torque | 300 - 600 Nm (Newton-meters). Critical to achieve specified torque for proper holding power without stripping the thread in the wood. | |
| Pre-drilling | Often required for larger diameters or hardwoods to prevent splitting and to reduce driving torque. | |
| Application | Sleeper Type | Primarily for Hardwood Sleepers, Softwood Sleepers, and some Composite/Polymer Sleepers. |
| Performance | Holding Power | Superior to dog spikes. The threaded connection provides much higher resistance to pull-out and loosening from vibration and load cycles. |
| Maintenance | Lower maintenance than dog spikes due to reduced tendency to loosen. |
Key Differentiators from Dog Spikes:
Mechanical Principle: Unlike the driven Dog Spike, the Screw Spike creates a threaded mechanical interlock with the sleeper material, which is fundamentally more secure.
Installation: Requires torque instead of impact force. This allows for a quantified and consistent installation preload.
Performance: Specifically designed for high-stress applications where standard dog spikes are insufficient, offering a significant upgrade in holding power and reliability.
gnee-professional supplier
Hot Tags: screw spike cut track, China screw spike cut track manufacturers, suppliers, factory, easy install rail spikes, cost effective rail spikes, sturdy rail spikes, reliable rail spikes, railway spikes production, track spikes workshop
