Introduction to the difference between bolts and screws and classification of bolts


Bolts are used for connection or fastening in mechanica […]

Bolts are used for connection or fastening in mechanical structures or building components, and they are usually classified as fasteners in mechanical parts (. Bolts are in most cases manufactured in accordance with relevant national or international standards, so In the business and circulation process, bolts and other parts that are also produced according to mandatory standards are collectively referred to as standard parts. Bolts, screws, and nuts (also known as nuts) are commonly known as or commonly referred to in many regions or non-professional reports screw.


The difference between a bolt and a screw lies in two aspects: one is the shape, the stud part of the bolt is strictly required to be cylindrical, which is used to install the nut, but the stud part of the screw is sometimes conical or even with a tip; the other is, On the one hand, the function is used, and the screw is screwed into the target material instead of the nut. In many applications, the bolts also work alone and are directly screwed into the pre-drilled holes without the need for nuts to cooperate with them. At this time, the bolts are functionally classified as screws.


The bolts are classified according to the force of the connection: ordinary and with hinged holes. According to the shape of the head: there are hexagonal heads, round heads, square heads, countersunk heads, and so on. Among them, the hexagonal head is the most commonly used. Generally, countersunk heads are used where connections are required.
The English name of the riding bolt is U-bolt. It is a non-standard part. The shape is U-shaped, so it is also called a U-bolt. There are threads on both ends that can be combined with nuts. It is mainly used to fix tubular objects such as water pipes or sheets such as car plates Springs are called riding bolts because of the way they fix things like a man on a horse. The length of the thread, it is divided into two categories: full thread and non-full thread.

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