Machine Key Length 20 mm Length Tolerance +0.000/-0.200 mm Material Steel Material Grade/Class Ungraded Finish Plain End Profile Round Width Tolerance +0.000/-0.036 mm Head Height Not Applicable Key Type Undersized Standards RoHS Compliant Dimensional Standards DIN 6885 System of Measurement Metric Key Shape Round Height 7 mm Width 8 mm Rockwell Hardness B87 Made in North America Yes Properties Corrosion Resistant