1045 Carbon Steel Rod, Material Carbon Steel, Material Grade 1045, Overall Length 6 ft, Heat Treatable Yes, Heat Treatment No Heat Treatment, Mechanical Finish Mill, Outside Diameter 5/8 in, Outside Diameter Tolerance +0.0000 in/-0.0030 in, Yield Strength 77,000 psi, Fabrication Cold Finished, Rockwell Hardness Not Rated, Brinell Hardness 90, Tensile Strength 110,000 psi, Machinability 64 Percent, Length Tolerance +/-6.000 in, Includes Material Certificate Yes, Standards ASTM A108, ASTM A29