Aluminum Rod, Aluminum, 6061, T6, Rod, Outside Diameter 5/16 in, Outside Diameter Tolerance +/-0.003 in, 36 in Overall Length, Length Tolerance +/-0.032 in, Fabrication Extruded, Heat Treatment Tempered, Heat Treatable Heat Treatable, Mechanical Finish Mill, Yield Strength 44,000 psi, Tensile Strength 47 psi, 82 BHN Brinell Hardness, 85 HRF Rockwell Hardness, Includes Material Certificate No Certificates Included, Standards ASTM B221, Minimum Temperature 148.9 Degrees C