Powerline Hardware P8914 (Millennium Part #542571) is a 3/4 in x 14 in machine bolt built to Bellcore Specification 6207. The heavier 3/4 in diameter carries higher tensile and shear loads than a 5/8 in bolt, making it the choice for double dead-ends, heavy guy assemblies and transmission-class framing where engineering calls out the larger size. The 14 in length suits typical utility pole diameters in the distribution space. Galvanized finish provides long-term corrosion protection outdoors. Install with matching 3/4 in square washers so clamping load is distributed across the pole rather than concentrated at the bolt hole.