Shim Stock Roll Brass Half Hard Temper Thickness 0.010 In Thickness 0.254 mm Thickness Tolerance +/-0.0008 In Width 6 In Width Tolerance +/-0.008 In Length 180 In Length Tolerance +3/-0.125 In Rockwell Hardness 30T 56-68 Tensile Strength 57 000 PSI Meets ASTM-B19 ASTM-B36 SAE-CA-260 CDA-260