'Carriage Bolt, Square Neck, Grade 5, Medium Carbon Steel, Finish Chrome Plated, Thread Size 3/8-16, Length 2 In, Drill Size 25/64 In, Head Dia. 0.782 In, Head Height 0.188 In, Head Type Round, Square Height 0.188 In, Square Width 0.368 In, Tensile Strength 120, 000 PSI, For Use With Grade 2 Nuts, Meets/Exceeds ASME B18.5, Package Quantity 5'