What are the screw types?

The screw is a tool that uses the physical and mathematical principles of the circular rotation of the inclined plane of the object and the friction force to tighten the instrument parts step by step.

Now take a look at the screw types what are the use scenarios?

1. Wood screws

Wood screw is a kind of screw specially used for attaching wood, it has a sharp head and a threaded body. The application range of wood screws is very wide, often used to make furniture, tables and chairs, doors and Windows, wall panels and other wood products, because they can firmly fix the wood, and easy to disassemble.

Second, self-tapping screws

Self-tapping screw is a kind of screw designed for thin materials, usually used to connect metal and plastic, and its head design has a certain bump, so that it can be formed directly in the metal or plastic without damaging the material. Self-tapping screws are widely used in automobile, machine equipment, electrical appliances and other fields.

Three, machine screws

A machine screw is a type of screw specifically used in machines and equipment that has a straight body, tight thread, and is generally stronger and more durable than self-tapping screws. Machine screws are widely used in machinery manufacturing, aerospace, electronic instruments and other fields with high strength requirements.

Four, screws

A screw is a spiral shaped metal screw with a hexagonal or cross-shaped head. Screws are usually used to connect metal, wood, stone and other solid objects, and have a wide range of applications in various industries, such as construction, electricity, shipbuilding and so on.

Five, expansion bolt

The expansion bolt, also known as the expansion screw, is composed of a sleeve, internal thread, buckle, nut, etc. Its function is to achieve the purpose of tightening by fixing the sealing sleeve in the hole. Expansion bolts are usually used in construction, bridge, tunnel engineering and other projects that need to tighten solid capital structures.

In summary, different types of screws are suitable for different occasions. Therefore, in the selection of screws, for different materials and needs to choose the right screw.