Ordinary types of nuts gradually slaken as time passes due to constant vibration, impact shock, etc. To eliminate this problem, we developed the world's smallest nuts named Cross Grip Nuts with slackening prevention function. Our Cross Grip Nut has self-developed round and hollow projecting portion on it. This part is divided evenly into four sections by cross-shaped slots with the same groove as the nut crozed inside. When a nut is entwisted into a screw, this portion on the nut is expanded outward. Then the repulsive force created by its expansion is converged on central part of the screw. As a result, this portion grips the screw tightly and the screw is firmly tightened by the nut. This is the product created by high-integrity accurate cutting work technology at which we highly excel. Currently this nut has also been employed as auto parts etc besides eyewear frames.

通常のナットを使用した場合、振動や衝撃により時間がたつにつれてネジが徐々に緩んでしまいます。その問題をクリアした、緩み止め機能を付加させた世界最小のナットを開発しました。ネジを挿入すると、４つのツメが外側に押し広げられ、その反発力が中心部に集中することにより、ネジが強力に締め付けられます。当社が得意とする精密切削加工技術を活かした製品であり、現在、メガネフレームのほか、自動車の部品などとして採用されています。