A crossover clamp in pole line hardware refers to a specific type of clamp or fitting used in overhead power distribution or telecommunication lines. Its primary function is to securely fasten two conductors or cables that cross each other at an intersection point along the line. Crossover clamps are designed to hold two crossing conductors firmly in place to maintain proper alignment and prevent them from coming into contact with each other, which could cause electrical arcing, shorts, or other issues. These are essential components in pole line hardware, especially in areas where multiple lines intersect or cross each other, ensuring the integrity and performance of the overhead distribution or communication system.