Machine Key Length 1 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 3/16 in Key Type Oversized Tensile Strength 64 000 psi Standards RoHS Compliant System of Measurement Inch Key Shape Straight Height 3/16 in Width 3/16 in Rockwell Hardness B50 Made in North America Yes Manufacturer Location Made in USA Pack Size Small Pack Package Quantity 10