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hague fasteners fasteners: Anti-loosening washers are a type of fastener with a flat, ring-like shape. Placed between the bearing surface of a bolt, screw, or nut and the surface of the connected part, they increase the contact area, reduce pressure per unit area, and protect the connected part's surface from damage. Another type, elastic washers, also prevents nuts from loosening. The anti-loosening washer consists of two pieces; its unique embedded structure changes the traditional method of relying mainly on friction for locking, instead adopting the most advanced international anti-loosening technology. It uses the tension between the two washers to achieve dual effects of anti-loosening and tightening. It prevents loosening caused by vibration and dynamic loads, is easy to disassemble, and the loosening torque is greater than the tightening torque; the locking effect is not affected by lubrication, and increased lubrication improves the anti-loosening effect; it has the same temperature characteristics as standard bolts/nuts and can be reused a limited number of times.

hague fasteners fasteners functions

Anti-loosening washers bring convenience to the mechanical industry by preventing thread loosening. There are many varieties of anti-loosening washers, including butterfly washers, saddle washers, spring washers, and wave spring washers, collectively known as anti-loosening washers. These types rely on increasing static friction to achieve anti-loosening effects, which meet enterprise needs under conditions of low vibration, light load, and uniform speed. However, under strong vibration, high load, and rapid motion, they do not achieve complete anti-loosening, only extending the time before the nut and bolt self-loosen. This breaks away from the traditional method of using increased "preload" and enhanced "friction" for anti-loosening. The latest anti-loosening principle is applied not only in washers but also in nuts and bolts, solving the problem of fastener loosening in heavy industry enterprises and eliminating the need to reference tightening and loosening torques during installation.

hague fasteners fasteners installation requirements

Anti-loosening washers are characterized by simple installation. Simply place the two washers with their inner inclined tooth surfaces facing each other between the nut and the connected material. After the nut is tightened, the outer radial cam surface of the anti-loosening washer bites into the contact surfaces at both ends, and the angle of the inner inclined tooth surface is greater than the thread angle of the bolt. When the bolt is elongated due to mechanical vibration, the nut rotates and loosens. Since the friction on the outer radial cam surface is greater than that between the inner inclined tooth surfaces, relative movement is allowed only between the inner inclined teeth, generating a certain lifting tension. When the bolt contracts, the inclined tooth surfaces return the nut to its original position, thereby achieving the 104% anti-loosening and tightening effect. The washers are suitable for relatively flat and smooth surfaces. If the connected material is non-metallic, a metal plate can be fixed to the connected material to allow the use of anti-loosening washers.

hague fasteners fasteners applications

Due to varying environmental conditions, the material requirements for lock washers differ. They are characterized by a wide variety of types and specifications, diverse performance characteristics and applications, and a high degree of standardization, serialization, and interchangeability. Some refer to the category of lock washers that already have national standards as standard fasteners, or simply as standard parts. Stainless steel lock washers possess inherent corrosion resistance; when the surface is damaged, a thin oxide layer forms on the metal surface to prevent further corrosion. Typically, this sequence of blocking, shearing, adhesion, and locking occurs within just a few seconds, so correct understanding and use of such fasteners are essential to prevent this phenomenon. Lock washers are suitable for equipment subject to frequent vibration, such as: automotive industry, compressors, construction, wind power generation equipment, agricultural machinery, foundry industry, drilling equipment, shipbuilding industry, mining equipment, oil drilling rigs (onshore or offshore), public utilities, rail transit, transmission systems, and metallurgical equipment.

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