Recommendations for the selection of screws, bolts and bolts

There are many types of screws. According to the different screw heads, they can be divided into slotted screws, cross screws, hexagon socket screws and many other types. Among them, slotted and cross screws are the most common types and are widely used in furniture assembly and small appliance repair. To choose the right screw, in addition to considering the head type, the thickness and length of the thread are also key factors, which are directly related to the firmness of the fixation and the type of material applicable. 

The selection of screws is usually more professional and needs to consider the shear force and tension it bears. Standard screws are classified according to international standards such as ISO and DIN, which specify the size, bearing capacity and material type of screws. When selecting screws, the properties of the connecting material and the force required after the connection should be determined to select the most suitable screw type and material. 

In the industrial field, the role of bolts is particularly important. Their classification includes but is not limited to hexagonal head bolts, square head bolts, hub bolts, etc. Hexagonal head bolts are the most common type. Because their hexagonal heads are easy to tighten with tools and withstand large tightening forces, they are widely used in the fields of construction and machinery manufacturing. When selecting bolts, in addition to size and material, their strength level is also very critical. Different levels determine the level of their tensile strength.

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