The function of overhead line fittings is to provide a mechanical interface for electrical connections and to hold insulators and conductors in place. In the relevant standards, fittings are harmonized and periodically updated as accessories that may consist of elements or attachments. Accessories for different conductors are designed for the termination, suspension or connection of conductors and are attached directly to the conductor. Dead-end clamps, suspensions, branch clamps, connectors, bundle spacers and anti-vibration accessories are included in this category. Depending on the function, they may form an assembly containing more than one element, including, for example, clamps for connecting couplings. Fittings for insulating sleeves and other accessories are designed to connect tension elements and attachment points at supports.