The constantly growing demand from mass transportation and automotive industries for stronger cable ties leads to problems associated with insulation damage caused by the standard internally serrated cable ties, especially when the cables are subjected to vibrations. The outside serrated OS series cable ties solve this problem. The new solution offers high resistance to tearing, low tightening force, and a smooth surface on the insulation side of the cable, minimizing the risk of damage. The curved shape of the head allows for better fitting of the tie to the cable shape and reduces the amount of space occupied by the head. Originally designed for the automotive industry, the cable tie is used in many industries where thin or soft insulation cables (e.g. silicone) are used, particularly in the aviation and railway industries.