Ball clevis is an accessory you can use in attaching or connecting ball and socket insulators to other linked tower hardware. You can connect socket insulator or socket tongues by ball heads. At times, you can also refer to ball clevis as a clevis eye. They are common in transmission lines and poles.
The Y type ball clevis belongs to link fitting, which is mainly use to assemble suspension type insulators into strings and connect one string or many strings to hang in the cross arm on the pole tower. The link fitting used in connection of suspension clamps and tension clamps with insulators and connection of guy wire fitting with pole tower.