Address: 4-4 Yanagi-machi Sabae City, Fukui
       916-0047 Japan
Tel. +81-778-52-5300 Fax. +81-778-53-1100
URL: http://www.fukuokarashi.jp
E-mail address: info@fukuokarashi.jp
Representative: Mikihito Fukuoka
Contact person: Yoshihide Sawa
Date of foundation: 1948 Capital: ¥15 million
Number of employees: 90

Mechanism of our cross grip nut with slackening prevention function
Our industry-leading/unique technology

The world’s smallest nut with slackening prevention device developed by our high-integrity accurate cutting work technology

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 fi rmly 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.

Description of our business

Manufacturing of optical components and various precision machining components
▪High-class eyewear metal components and other components used for optical equipment, light electrical appliances, acoustic equipment, medical equipment, etc
▪A wide variety of high precision metal components
(nuts with slackening prevention device etc)

Previous page
Next page