Parallel Groove Clamps The geometry of the ACA Universal Groove represents an engineering achievement: an optimum shape for both electrical and mechanical efficiency for a range of conductor sizes. Alcoa Parallel Groove Clamps provide positive alignment. The extended lip aligns the cap as the bolt is tightened. The clamps can be applied "hot" without taking them apart. There's no chance of losing nuts and washers, and no need to fumble for loose parts.
