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Why Are Hex Nuts Most Commonly Used?

Nov. 16, 2019 | 09:58:05
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Anyone familiar with nuts knows that there are many types of nuts, such as square nuts, round nuts, ring nuts, wing nuts, hex nuts, and so on. Then the most common one on the market is the hex nut, so why is the hex nut the most common? The Hex Nut Manufacturer will tell you.


First we need to know the classification of the hex nut.


The hex nut is used in conjunction with the bolt and the screw to connect the fastening mechanism. Hex nuts are classified into I type, II type and thin type according to the nominal thickness. Nuts of class 8 or higher are divided into two types, type I and type II. The type I hex nut is the most widely used, and the type 1 nut is divided into three grades A, B, and C. The grade A and grade B nuts are suitable for machines, equipment, and structures with low surface roughness and high precision. Class C nuts are used for machines, equipment or structures where the surface is rough and the accuracy is not critical.


Among them, the type I nut is the most widely used. The C-class nut is used for machines, equipment or structures with rough surface and low precision. Class A and B nuts are used for smooth surface and high precision. Machine, equipment or structure. The thickness of the type 2 hex nut is thicker, and it is often used in occasions where assembly and disassembly are often required. The thickness M of the hexagonal thin nut is thinner and is often used when the surface space of the connected member is limited.


According to the distance between the teeth: standard teeth, regular teeth, fine teeth, very fine teeth and anti-tooth.


Classified by material: stainless steel hex nut and carbon steel hex nut, copper hex nut, iron hex nut.



Classified by thickness: thick hex nuts and Thin Hexagon Nut.


Classified according to the method of use: hot-melt copper nut, hot-pressed copper nut, embedded copper nut and ultrasonic copper nut.


Thin Hexagon Nut


Thin Hexagon Nut


The hex nut is the crystallization of the working people's continuous practice in production and life.


1. The nut is made into a hexagonal shape for ease of use. On the machine, the part where the nut is mounted is sometimes not sufficiently wide, and the space for the wrench that screws the nut is also quite small. The hexagonal nut can be tightened slowly by only 60 degrees at a time, and the square nut needs to be rotated 90 degrees each time. That is to say, in order to tighten the nut, the hexagon is smaller, but the octagonal nut is easy to slip due to the small contact surface of the wrench, and is usually rarely used, so the hexagon nut is most convenient to use. Look at the wrench again. The handle and the wrench of the ordinary wrench can be angled at 30 degrees, so that when the nut is installed in a narrow position, the wrench can not move freely, and the hex nut, as long as the wrench is pulled a nut, Then turn the wrench over and pull the nut once again, so that the nut can be tightened by repeatedly pulling it back and forth several times.


2. The nut is made into a hexagon to maximize the use of material. Because in terms of strength, the large nut is stronger than the small one. In the past, the nut is usually milled from a circular material. The same round rod is used to make the hex nut. High, and the hex nut made of the same thickness of the round rod is much larger than the square nut.


In summary, the Hexagonal Nut is more convenient to use and also increases the material usage rate, so it is most common on the market.