Helical Wire

Wire with a general cross-sectional shape that is non-circular and has an orientation that varies helically along the length of the wire. Used for threaded nails, spikes, concrete reinforcement, non­skid gratings, etc. Produced by helically twisting wire about its longitudinal axis or by rolling or grooving completed nails, screws, etc. Also, small-diameter steel spring wire, formed into a continuous helical spring shape, used for connecting individual spring coils together in an inner spring formation.