Flat washers: Washers refer to the parts filled between the connecting piece and the nut. Generally, flat metal rings are used to protect the surface of the connector from being scratched by the nut and to dissipate the pressure of the nut on the connector.

2. Flat washers and spring washers

Spring washers are widely used in bearing and non-bearing structures of general mechanical products. They have the characteristics of low cost and convenient equipment, and are suitable for frequently installed and disassembled parts. However, the anti-loose capacity of the spring washer is very low!

3. Self-locking nut
The general nut will loose itself due to oscillation and other reasons during use, such as oscillation. In order to avoid this phenomenon, the self-locking nut is invented. The main function of the self-locking nut is to prevent loosening and anti-vibration. For special occasions. Its working principle is generally self-locking by friction. The types of self-locking nuts classified by function include those with nylon rings, those with neck closures, and those with metal anti-loosening equipment. They are all classified as effective torque locknuts. Due to their nature, self-locking nuts are difficult to screw.

4. Nut anti-loosening fluid

Apply the nut anti-loosening liquid to the tightening place of the bolt, and then screw on the nut to achieve the anti-loosening effect.

5. Double nut (left and right rotation) to prevent loosening

It is also a good method to tighten and prevent loosening through the cooperation of a left-handed nut and a right-handed nut.

6. Screw and nut drilling and pinning

In machinery, pins are mainly used for installation and positioning, and can also be used as overload shear connections in connection and relaxation-level safety equipment. The types of pins are: cylindrical pins, tapered pins, hole pins, cotter pins and safety pins.

Founded in the year 2009, Jiaxing Reegu Hardware Product Co., Ltd. Enjoys the convenient transportation: it's located in haiyan Tongyuan Industrial Park, contiguous to the cross-sea hangzhou bay bridge & just 100 kms far from hangzhou xiaoshan airport.

Our company covers an area of about10000 square meters & employs more than 80 workers. All the time, our company keeps top production technology, advanced production equipments, best design capacity. Under the leading system & concept in quality control, our company easily passed the iso 9001:2001 quality system certification. In order to engage in the production & development of the Countersunk rivet nut, our company pumped an enormous sum of money into buying many sets of automatic molding machines & related equipments from taiwan in theyear 2011. Now via these talents & facilities, our company can totally guarantee the product quality & production efficiency.