Aluminum Flat Bar, Aluminum, 6061, T6, Flat, 4 ft Overall Length, Length Tolerance +0.125 in/0 in, 4 in Overall Width, Width Tolerance +0.125 in/0 in, 0.16 in Thickness, Thickness Tolerance +/-0.007 in, Fabrication Not Applicable, Heat Treatment No Heat Treatment, Heat Treatable Heat Treatable, Mechanical Finish Mill, Yield Strength 40,000 psi, Tensile Strength 45,000 psi, 95 BHN Brinell Hardness, 95 HRB Rockwell Hardness, Includes Material Certificate Material Certificate with Lot Number