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| ①,A slight rounding of all edges and corners of the hex surfaces shall be permissible. ②,Fillet radius, R, at the junction of the sides of the hex and the top of the washer shall not exceed 0.15 times the basic screw diameter. ③,Where specifying nominal size in decimals, zeros preceding the decimal and in the fourth decimal place shall be omitted. ④,The recess depths, slot depths, and penetration given are intended to include the depth of the indentation. Due to possible variations in the indentation depths, there could be variations in these dimensions. In these cases, the requirements are to be as agreed upon between the manufacturer and the purchaser. |
