Key Stock System of Measurement Inch Material Steel Material Grade/Class Grade 1018/Grade 1045 Finish Zinc Plated Height 1/8 in Thickness Tolerance +0.003/-0.000 in Length 12 in Length Tolerance +0.000/-0.125 in Width 5/8 in Width Tolerance +0.003/-0.000 in Pack Size Small Pack Made in North America Yes Properties Corrosion Resistant Key Shape Straight Rockwell Hardness HRB 50 Features Magnetic Tensile Strength 64 000 psi Manufacturer Location Made in USA