Aluminum Round Tube 6061 Aluminum 6061 T6 Round Tube 6 ft Overall Length Length Tolerance +/-1 in Outside Diameter 5/8 in Outside Diameter Tolerance +/-0.004 in Inside Diameter 0.555 in 0.035 in Wall Thickness Wall Thickness Tolerance +/-0.002 in Fabrication Cold Drawn Heat Treatable Yes Mechanical Finish Mill Yield Strength 40 000 psi Tensile Strength 45 000 psi 95 Brinell Hardness 60 Rockwell Hardness Includes Material Certificate Yes Standards ASTM B210