This standard covers nomenclature, definitions, identification number, dimensions and tolerances of Woodruff Keys and Keyseats. It represents manufacturing practices for sizes and types from 1/16 in. x 1/4 in. thru 3/4 in. x 3 1/2 in. covering 66 listings. Material, heat treatment, hardness or finish is not within the scope of this standard. Dimensional features only are included.