Nuts are nuts, parts that are screwed together with bolts or screws to secure them. Nuts are parts that are closely connected to mechanical equipment. Through internal threads, nuts and bolts of the same standard can be joined together. For example, M4-P0.7 nuts can only be connected with M4-P0.7 series bolts (the nut in between, M4 indicates that the inner diameter of the nut is about 4mm, and 0.7 indicates that the interval thread between the two is 0.7mm) The same is true for US products, for example, 1/4-nuts can only be used with 1/4-screws (1/4 means the nut has an inner diameter of about 0.25 inches, which means there are teeth per inch).

The working principle of the nut is self-locking through the friction between the nut and the bolt. However, the robustness of this self-locking will decrease under dynamic loads. In some important occasions, we will take some anti-loosening measures to ensure the reliability of the nut. One of the ways to prevent loosening is to use a locking nut.

There are also three types of lock nuts:

One is to use two identical nuts to tighten the same bolt, and increase the tightening torque between the two nuts to make the bolt connection firmly. Two are special lock nuts that need to be used with lock washers. The special lock nut is not a hex nut, but a round nut in the middle. The nut has 3, 4, 6 or 8 gaps on the circumference for screwing in small diameter countersunk head screws, the purpose is to tighten the centripetal force to prevent the lock nut from loosening.

High-strength bolts are increasingly used. Commonly used 8.8s and 10.9s two intensity levels, of which 10.9 is mostly. Generally, the strength level of bolts is lower, generally 4.4, 4.8, 5.6 and 8.8.

According to the force characteristics, it is divided into pressure type and friction type. The two calculation methods are different. The small standard of high-strength bolts is M12, and M16~M30 is commonly used. The performance of the super-large standard bolts is unstable and should be used carefully in planning.

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 rivet nuts, 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.

Main products from our company are Closed-end rivet nut, countersunk head, vertical stripes, hexagonal head, blind hole or other special kinds. By now, our products are widely applied to the fields of planes, vessels, autos, machinery, furniture, bags & cases.

After years of staff unremitting efforts & joint research-communications with foreign experts, the brand ' reegu' has won the recognization from the majority of consumers & agents, and gains the strong advantages in the market competition.