What Are Screws And Bolts And The Difference Between Them

With the rapid development of science and technology, People’s Daily life is almost inseparable from hardware products. When consumers buy screws or bolts, they often confuse the two fasteners because they do not know much about screws and bolts. In fact, there is no strict distinction between screws and bolts in the fastener industry. But the smaller ones are called screws, such as tapping screws, setting screws, wood screws, etc. Larger screws are called bolts, such as hex bolts, expansion bolts, carriage bolts, etc. As a professional fastener manufacturer, Xinchi Fasteners Company will take a look at the differences between screws and bolts.

What is a screw?

The screw is a kind of fastener composed of a head and a screw. Screws can be divided into three categories according to their use: machine screws, setting screws, and special-purpose screws. The connection of the screw requires tapping to form a threaded hole in the connected piece, which is generally used for the connection between the thinner part and the thicker part.

What is a bolt?

The bolt is a kind of fastener composed of two parts: the head and the screw. It needs to be used with the nut. The connecting piece only needs a light hole while using bolts. Bolts are generally used when the joints of two parts are of similar thickness. As for its head shape, the general head of the bolt is flat. The head of the screw according to the application of different occasions have a variety of forms.

What is the difference between a bolt and a screw?

Screws and bolts are functionally connected and fastened parts. In structure, bolts have a variety of styles of “head”; Studs without “head”; Screws also have a variety of styles of “head”, but the structure of the “head” is different. Generally, the “head” of the screw is equipped with fastening slots and inner hexagons, etc., and the screws that can be tightened by hand will have rolling patterns on the “head”. This makes the screw smaller in size. In the application, bolts and nuts are generally used in pairs, for through holes, and bolts can be easily replaced if damaged. Stud is also generally used with nuts, mostly used for blind holes. And studs are often used when the connected piece needs to be removed frequently. Screws are also used for blind holes and are used when the connected parts are rarely removed.

In addition, the fastening tools of bolts and screws are different. Bolts usually use wrench tools, while screws usually use subclass tools. Fastening methods are also different, the bolt is generally used with the nut or screwed into the processed bolt hole, and the screw in addition to these two ways, there are self-tapping screws. Self-tapping screws are directly screwed to the workpiece whose material is soft, without another processing bolt hole. For example, the wood screw is this kind of screw. The appearance of bolts and screws is not the same, the head of the bolt generally has to adapt to the appearance of the tool, such as hex bolts, and hex bolts, and the head is exposed to the outside of the workpiece. The head of the screw is generally flush with the surface of the workpiece, those who are not self-tapping screws also need to process an inclined plane on the surface of the workpiece, just so that the screw head is flush with the surface of the workpiece.

Anji Xinchi Fasteners Co., Ltd. is a one-stop fastener and fastener solution company. As a reliable fastener supplier, we can offer a wide range of T-nuts, screws, washers, sleeves, bolts, rivets, and more. If you would like to know more about fasteners or have any fastener purchasing requirements, please do not hesitate to contact us and our experienced sales staff will get back to you as soon as possible.