The screw is a universal fastener mainly used to fix two objects to prevent them from loosening and causing bad consequences. It is essential in industrial manufacturing engineering and widely used in electronics, machines, power equipment, etc. Screw fasteners are used in almost everything we can see. The application scale of screw fasteners is so extensive that the market for screws must be very large. 

The demand for screw fasteners must be relatively infinite.

When selecting professional screw manufacturers, purchasers must first understand some basic professional knowledge of screw fasteners, such as classification. There are many kinds of screw fasteners available on the market. Only by fully understanding the functions and characteristics of different screw fasteners can we select the best screw manufacturer.

The use of the screw fastener is convenient and flexible, and it is suitable for the place where the load is not too large. In this article, I will take you through some common screws and their uses.

Hex cap Screw

Hex cap screw is a large screw with a hexagonal head used to fix wood to wood or metal to wood. The hex cap screw is composed of small steel wire spiral and smooth shank, making it very suitable for indoor home decoration or outdoor projects for stainless steel. The hex cap screw tends to rotate when tightening, so it is necessary to hold the bolt with a wrench or socket to tighten (or loosen) the nut.

Wood screw

The wood screw has a threaded shaft for fixing the wood to the wood. Wood screws have many different types of heads, but the most common are round and flat heads. When the screw is screwed into the workpiece, the round-headed wood screw is completely above the workpiece, while the flat-headed wood screw is concave into the workpiece. Round-headed wood screws are ideal for attaching thin materials to wood, and flat-headed screws are useful for fixing hinges. Besides, wood screws are mainly made of brass, stainless steel, or steel with weather resistance.

Sheet metal screw

Sheet metal screws are used to hold a variety of different materials (including plastics, rubbers, metals, as well as plywood) together, or to connect sheet metal to other types of metals. Sheet metal screws are excellent fasteners because their sharp and custom threads ensure a firm fit. They usually have round, flat, or even hexagonal heads. For maximum weather ability, they are almost made of plain steel, aluminum, or stainless steel.

Machine screw

Machine screw

A machine screw is a mixture of small bolts and screws used to fix metal to metal or metal to plastic. They are used to secure electrical components in house, for example, fixing a lamp to an electrical box. When the machine screw is screwed into a hole, the thread matching the mechanical screw needs to be cut out in the hole. If no holes are drilled, nuts are required for machine screws.

Socket-head cap screws

The space required by socket-head cap screws is less than that of the hex cap screw, and the socket-head cap screw is used in the situation of limited space or narrow space. Also, they are ideal for situations where fasteners need to be fixed below the surface of the material.

Socket-head cap screw is a kind of mechanical screw, which is most commonly used in the automobile industry, machine tool, mining machinery, and engineering application. In addition to their ruggedness and corrosion resistance, they also ensure a beautiful and high-quality appearance.

Lag screws

Lag screws are usually large in diameter and long enough to penetrate deep into the wood to form a firm connection with little chance of loosening after tightening. Common places where such screws can be found are decks, docks, and wood retaining walls. That is because lag screws are extremely strong and durable. They are mainly made of high carbon steel and zinc coated. Galvanized zinc material prevents rust and corrosion. Moreover, water and air cannot penetrate into the square head screws, which makes them rustproof.

Choose your screws

There are many industrial applications that require screw fasteners. And even if there are a variety of options to meet your needs, defining components and how they fit together will make selection easier. We recently learned that SOZN has won the hearts of consumers for its professional screw production technology.

At SOZN, they use standard products, custom threads, and fully designed complex system solutions to solve your linear motion problems. They have 12 years of comprehensive engineering experience to help your team succeed in all threaded projects.