This Standard specifies performance and general requirements for helical fittings for use on
overhead electric power lines.
Helical fittings for overhead lines, including OPGW and ADSS and stays, consist of sets of
rods, each of which has been formed into an open helix having normally the same direction
of lay as the outer strands of the conductor to which it is applied. In installation, the rods
are wrapped in accordance with the manufacturer’s recommendations around a conductor,
cable or stay having a diameter somewhat greater than the internal diameter of the fitting.