Fastener Knowledge

A double head bolt, as the name suggests, has threads on both ends and a bare rod in the center, either thick or thin. It is also called double head screw or double head stud. It is generally used on large main equipment, such as mining machinery, bridges, automobiles, reducer frames and so on.

The most common bolt performance grade currently available is the metric grade set by ISO, which consists of two numbers separated by a dot and is usually marked on the top or side of the bolt head or nut. The more common ones are 8.8, 10.9 and 12.9.

Mention of nuts, I believe we will not be very unfamiliar, nuts are often and screws with the use of a fastener, in daily life can be seen everywhere, it can also be seen, nut market demand is really considerable.

However, due to the variety of nut types, other than the common nuts, other types of nuts are less exposed and even senior mechanics do not know much about them. Today, Aozhan Fasteners lists the main types of nuts in the market, hurry up and take the challenge, is there anything you don't know?

When you need to take out the expansion bolts, you may encounter some difficulties. However, as a leading hardware fastener manufacturer in China, Aozhan Fasteners can provide you with professional solutions. As a supplier of expansion bolts, we understand the needs of our customers and are committed to providing them with high-quality products and considerate services.

Self-drilling screws and drywall screws are two common types of fasteners, which play important roles in different application scenarios. As a leading hardware fastener manufacturer in China, Aozhan Fasteners is committed to providing customers with high-quality self-drilling screws and drywall screws and an in-depth understanding of the differences between them.

A. Definition of Nut Counter Thread and Fine Thread

Nut counterthread and fine thread are both a kind of threaded connectors, which are used to fix the coupling and disassembling of mechanical parts and structures, and are usually used in the fields of machinery, chemical industry, electric power and so on. Both types of connectors are threaded, but there are differences.

The so-called self-tapping screws are screws that can tap themselves, so they are suitable for fastening non-metallic or metal parts that do not require bottom holes and tapping. However, when such screws rust, it will affect the tightening effect, so we need to find the cause of the rust and provide ways to improve it.

Hardware fasteners play an important role in construction, machinery and manufacturing, and Aozhan Fasteners in China is known for its advanced production process and strict quality control. Let's take a closer look at how Aozhan Fasteners conducts its product...

When installing buildings, bridges, or mechanical equipment, you may be faced with the problem of choosing a foot bolt. In this process, you may consider the difference between J-type and L-type anchor bolts. As a leading hardware fastener manufacturer in Chin...

As a leading hardware fastener manufacturer in China, Aozhan Fasteners focuses on producing various high-quality fastener products, among which carriage bolts are one of our specialties. Carriage bolt is a very important fastener with a wide range of applications and multiple functions.