Carbon Steel Rod, Material Carbon Steel, Material Grade 1045, Overall Length 12 in, Heat Treatable Heat Treatable, Heat Treatment No Heat Treatment, Mechanical Finish Mill, Outside Diameter 3 1/2 in, Outside Diameter Tolerance 0 in/-0.005 in, Yield Strength 77,000 psi, Fabrication Cold Rolled, Rockwell Hardness Not Rated, Brinell Hardness 90 BHN, Tensile Strength 110,000 psi, Machinability 64 Percent, Length Tolerance +/-1 in, Includes Material Certificate Material Certificate with Lot Number