Machine Key, Length 1 1/4 in, Length Tolerance +0.000/-0.030 in, Material Steel, Material Grade/Class Grade 1018/Grade 1045, Finish Plain, End Profile Square, Width Tolerance +0.002/-0.000 in, Head Height 3/8 in, Key Type Oversized, Tensile Strength 64,000 psi, Standards RoHS Compliant, System of Measurement Inch, Key Shape Straight, Height 3/8 in, Width 3/8 in, Rockwell Hardness B50, Made in North America Yes, Manufacturer Location Made in USA*, Pack Size Small Pack, Package Quantity 10