FAQ

When installing, the tooth surface of the double-sided tooth anti-loosening washer must respectively fit the bolt support surface and the workpiece surface, and must not be installed in reverse. When tightening, ensure sufficient preload torque so that the tooth surface can engage and lock. When the surface hardness of the workpiece is insufficient, it is necessary to assess to avoid damaging the surface of the workpiece.

The core function of butterfly washers is elastic compensation, which relies on elastic deformation to continuously provide preload force and compensate for the loss of preload force caused by bolt thermal expansion and contraction, as well as stress creep. Often used in conjunction with anti loosening washers, it is mostly used in aerospace and precision equipment, and its anti loosening effect is limited when used alone.

The double-layer self-locking gasket is suitable for outdoor environments with strong winds, large temperature differences between day and night, and high humidity and salt fog. Its typical applications include photovoltaic brackets and steel structure Bridges. When paired with stainless steel or anti-corrosion coating, it can resist atmospheric corrosion and maintain locking effect under continuous vibration conditions, but is not suitable for working with strong chemical corrosive media.

The French conical knurled anti-loosening washer is a disposable fastener. After assembly and locking, the conical surface and tooth pattern of the washer will undergo meshing deformation. After disassembly, the meshing structure of the tooth pattern will be damaged, and the anti-loosening performance will drop significantly. There is a risk of loosening when used again. It is not recommended to reassemble and use it.

Ordinary flat washers only serve to distribute pressure and protect the surface of the workpiece, and do not have the ability to prevent loosening. Anti-loosening washers rely on tooth surface interlocking, conical surface interlocking or elastic compensation structures to continuously maintain the pre-tightening force of bolts under vibration and alternating loads, effectively preventing thread loosening. They are widely used in scenarios with high requirements for connection reliability, such as high-speed rail, photovoltaic, and precision machinery.