Woodruff Key Length 1 1/8 in Length Tolerance +0.000/-0.010 in Material Steel Material Grade/Class Grade 1035 Finish Plain Height 0.484 in Width 0.1875 in Width Tolerance +0.000/-0.001 in Rockwell Hardness B80 Tensile Strength 72 000 psi Made in North America Yes Manufacturer Location Made in USA Pack Size Small Pack Material Quality Standards ANSI B17.2 Key Shape Woodruff Key Type Bilateral System of Measurement Inch Package Quantity 25