HANSHIN NEJI (THAILAND) CO.,LTD.

Wedge Principle for Preventing Nut Loosening

Nut loosening can pose significant safety risks in various structures such as high-speed trains (Shinkansen), bridges, and buildings. To address this issue, a nut-loosening prevention technique utilizing the Wedge principle has been developed. This technique was specifically developed in Japan and is widely used in critical safety applications. It employs a special shape of Wedge washer to effectively prevent nuts from loosening. This article will explain the distinctive features and specifications of the nut-loosening prevention technique using the Wedge principle in detail.
Features:
The nut-loosening prevention technique using the Wedge principle is highly valued by the construction and maintenance industries for its innovative approach. The most prominent feature of this technique is its resistance to external influences such as vibration and temperature changes. Compared to traditional nut-loosening prevention methods, the Wedge principle requires less re-tightening and demonstrates stable nut-loosening prevention over a long period. This significantly helps reduce maintenance costs.
Specifications:
The nut-loosening prevention technique based on the Wedge principle consists of a specially shaped Wedge washer and a nut adapted to it. The Wedge washer is designed so that when installed between the nut and bolt, even if external forces are applied, it will not loosen, and the clamping force will increase. This expertise focuses on applications in critical safety areas such as high-speed trains and bridges, where safety is paramount, and has gained international recognition.
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Wedge Principle for Preventing Nut Loosening

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