In rail terminology, a spike is a large nail with an offset head that is used to secure rails or fishplates (or baseplates) to ties in the track. Spikes are driven into wooden ties either by hammering them with a spike hammer by hand, or in an automated fashion with a spiker.

Many railways use large wood screws, also called lag screws, to fasten the fishplates (or baseplates) to the railroad ties.

Rail infrastructure