'Carriage Bolt, Square Neck, Grade 5, Medium Carbon Steel, Finish Chrome Plated, Thread Size 1/4-20, Length 1 1/2 In, Drill Size 17/64 In, Head Dia. 0.563 In, Head Height 0.125 In, Head Type Round, Square Height 0.125 In, Square Width 0.245 In, Tensile Strength 120,000 PSI, For Use With Grade 2 Nuts, Meets/Exceeds ASME B18.5, Package Quantity 5'