One minute to get you know the screws and bolts and the difference between them
With the rapid development of technology, people can hardly be separated from hardware products in their daily lives. When consumers buy screws or bolts, they often confuse the two because they don't know much about screws and bolts. In fact, in the fastener industry, there is no strict distinction between screws and bolts. But the smaller is called the screw. Such as: self-tapping screws, set screws, wood screws, etc.; larger screws are called bolts, such as: hexagon bolts, expansion bolts, carriage bolts, etc. Let's take a look at the differences between screws and bolts.
1, the screw
Screws are a type of fastener consisting of two parts, the head and the screw. They can be divided into three categories according to their use: machine screws, set screws, and special purpose screws. The connection of the screws requires tapping on the connected member to form a threaded hole, which is generally used for the connection between the thinner member and the thicker member.
2, bolt
The bolt is a kind of fastener consisting of two parts: the head and the screw. It needs to be used with the nut. Only the light hole is needed on the connecting piece. Generally, the two parts are used when the thickness of the joint is similar. As for the shape of the head, the head of the bolt is generally flat, and the head of the screw has many forms depending on the application.
Screws and bolts are functionally connected and fasteners. In terms of structure, bolts have a variety of "heads"; studs have no "head"; screws also have a variety of "heads", but the "head" structure is different, the "head" of the screw is generally tight Fixed grooves, hexagon sockets, etc., screws that can be tightened by hand will be embossed on the "head". This makes the screw size smaller. Application: Bolts are generally used in pairs with nuts. They are used for through holes. They are easily replaced after damage. Studs are also generally used with nuts. They are mostly used for blind holes, and the connectors need to be removed frequently. Screws are also used for blind holes. When it is removed by the connecting piece Hengshao.
In addition, their fastening tools are different. Bolts generally use wrench-type tools, while screws generally use screwdriver-type tools. The fastening methods are different. Bolts are generally used with nuts or screwed into machined bolt holes. These two methods also have self-tapping screws, which are directly screwed into the workpiece with soft material. There is no need to machine bolt holes. For example, the wood screws are the screws; the outer shape is different, and the head of the bolt is generally adapted. The appearance of the tool, such as hexagon bolts and hexagon socket bolts, whose heads are exposed on the outside of the workpiece. To make the surface of the workpiece flat, it is necessary to use a hexagon socket bolt, and the head of the screw is generally flush with the surface of the workpiece. Bolts that are not self-tapping also have a bevel on the surface of the workpiece so that the screw head is flush with the surface of the workpiece.
Small Prefab Homes,Prefab Homes,Prefab Houses,Prefab Modular Homes
Jinan Zhengtang Insulation Decoration Material Co.Ltd , http://www.ztwallsiding.com