Rail screw spikes (also called sleeper screws or square head rail bolts) are medium or large metal screws used to fasten rail tie plates and rail track on the wooden or concrete sleepers.
The screw spikes are always fixed in the holes drilled in the wooden sleepers and fixed together with the plastic dowels embedded in the concrete sleepers. Railway screw Spikes are usually used for wooden sleepers, especially in the United States and Canada.
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