'Plow Bolt, Countersunk Square Neck, Alloy Steel, Yellow Zinc Finish, Thread Size 5/8-11, Length 2 1/2 In, Grade 8, Head Dia 1.044 In, Head Height 0.516 In, #3 Dome Head Type, Head Angle 80 Deg, Square Width 0.640 In, Tensile Strength 150,000, Meets/Exceeds SAE J 429, Package Quantity 10'