A bolt which has a mortise near the end, and is secured by a cotter or wedge instead of a nut.
日本語の意味
キー・ボルト：先端近くにくぼみ（モルタイズ）があり、ナットの代わりにコッターまたはウェッジで固定されるボルト。
英語の意味
A bolt which has a mortise near the end, and is secured by a cotter or wedge instead of a nut.
