| 摘要 |
PROBLEM TO BE SOLVED: To provide a tapered washer which prevents any joint turning of the tapered washer used when a contact surface of a bolt head or a nut with a joining member is inclined, and a bolt from being loosened. SOLUTION: In the tapered washer 1, a plurality of through holes 3 for the bolts 10 of the tapered washer 1 are cut at desired pitches p in the direction orthogonal to the tapered forming direction, and the angle of inclination of the tapered washer 1 is substantially 80.
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