Hex Cap Screw 5/8-11 x 4-1/2 Zinc Grade 2

Grade 2 zinc-plated steel hex cap screw, 5/8"-11 UNC x 4-1/2" length. ASME B18.2.1 dimensional standard with ASTM A307 / SAE J429 Grade 2 strength and zinc plating for general-purpose corrosion resistance.
Used in HVAC equipment mounting, machinery assembly, and structural fastening applications requiring a longer-grip hex bolt.