| 摘要 |
<p>A conical spring washer is constituted by a conical spring washer body, a plurality of spaced lock pawls extending downward from the lower contacting surface of the body, and each of the lock pawls has a gradually sloped face in the tightening direction of a nut or the head of a bolt and a sharply sloped face in the loosening direction of the nut or bolt head.</p> |
