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... head and a square shank. The bottom of the head is sloped to match the slope of the flange of a rail. The tip is wedge-shaped, not pointed. The wedge is driven into the tie across the grain, that is, parall...
...spikes or chair screws, are usually used to fix wooden railway sleepers with tie plates or rail chairs. Coach screws are designed with a square head at the top and a cylindrical shaft with external threads o...