Alloy Steel Rectangular Bar, Material Alloy Steel, Material Grade 4140, Thickness 0.75 in, Thickness Tolerance +/-0.002 in, Overall Length 11 3/4 in, Overall Width 2 in, Fabrication Hot Rolled, Heat Treatable Heat Treatable, Mechanical Finish Precision Ground, Yield Strength 127,000 psi, Tensile Strength 148,000 psi, Brinell Hardness 197 BHN, Rockwell Hardness 26 HRC, Machinability Not Rated, Standards DFARS Compliant, Appearance Mill