Low carbon steel C%≤0.25% is usually called A3 steel in China. Foreign countries are basically called 1008, 1015, 1018, 1022 and so on. It is mainly used for products without hardness requirements such as grade 4.8 bolts, grade 4 nuts, and small screws (Note: 1022 material is mainly used for drillin......

Everyone is very familiar with the screw, which is basically the most basic small part we use. In China, the screw standard is stipulated according to our own standard parts. So for this hexagonal screw, it What is the size? What is the difference between the inner hexagonal screws and outer hexagon......

Hexagon Head Bolt are often encountered in daily life, but because there are many specifications of hexagonal bolts, consumers also buy hexagonal bolts that cause certain difficulties. Let's take a look at what is a hexagonal bolt and the specifications of a hexagonal bolt.

Hexagon head flange bolts are a type of fastener consisting of a hexagonal head and a flange plate (the gasket under the hexagon is fixed with the hexagon) and a screw (a cylinder with an external thread). Nut fit, used to securely connect two parts with through holes. According to the different pla......

Screws are commonly known as screws, and those with external threads can be called screws.

The so-called wood screw, that is, a wood screw, is similar to a machine screw, but the thread on the screw rod is a special wood screw rib, which can be directly screwed into a wooden component, used to connect a metal or non-metallic part with a through hole to the screw. A wooden element is faste......