Key Stock System of Measurement Inch Material Steel Material Grade/Class Grade 1018/Grade 1045 Finish Plain Height 1 1/4 in Thickness Tolerance +0.000/-0.003 in Length 6 ft Length Tolerance +/-0.250 in Width 1 1/4 in Width Tolerance +0.000/-0.003 in Pack Size Bulk Pack Made in North America Yes Key Shape Straight Rockwell Hardness HRB 50 Features - Tensile Strength 60 000 psi Manufacturer Location Made in USA Key Type Undersized