1" UNC X 4 1/2" H.T SET S/C GRADE S is a high tensile set bolt built for securing heavy-duty components in engineering, construction, and industrial settings. Designed for durability, it provides strong load-bearing capacity and resistance to shear forces. The zinc-plated (Z/P) or self-coloured (S/C) finish enhances its longevity by offering excellent protection against corrosion. Ideal for machinery, vehicles, and structural frameworks.