When it comes to nuts, I believe you will not be very strange, nuts are often used with screws as a fastener, which can be seen everywhere in daily life, and it can be seen that the market demand for nuts is really considerable.
However, due to the variety of nut types, in addition to commonly used nuts, other types of nuts have less contact, and even senior robots do not know much about it. Today, Xiaobian listed the main types of nuts on the market, come and challenge it, is there anything you don’t know?
1. Hexagon nut
1. What are outer Hexagon nuts?
The hexagon nut is mainly used with bolts and screws to connect fasteners. According to the nominal thickness is divided into type I, type II and thin type three, more than 8 nuts are divided into type I and type II two types, I nuts are divided into A, B, C three levels.
2. Application scenarios
Class A and class B nuts are suitable for machines, equipment and structures with small surface roughness and high precision requirements, while class C nuts are used for machines, equipment or structures with rough surface and low precision requirements. The thickness of type II hexagon nuts is relatively thick, and it is used in occasions where installation and disassembly are often required.
2. Square nut
1. What are square nuts?
Because the shape is square, it is also called square nut, also known as square nut or square nut. The square nut is one of the welding nuts, which is to melt a certain metal at high temperature and weld it in the middle of two products to play a fastening role.
2. Application scenarios
The fastening effect of this connection will be very good, it will not be easy to loose, and it is widely used in road traffic, home building materials and other industries. It covers almost all areas of fastener needs and is one of the common mechanical fasteners.
Three, flange nut
1. What is flange nut?
Also known as the cushion nut, tooth nut, hexagonal flange nut, flange nut, etc., its size specifications are the same as the hexagonal nut, but its gasket and nut are integrated, and there are anti-slip teeth below, which increases the surface area contact between the nut and the workpiece, compared with the combination of ordinary nuts and washers, the anti-loosening performance is stronger.
2. Application scenarios
Mainly used to connect two pipelines or between pipelines and equipment, because of its good sealing performance, mostly used in pipeline connection or need to increase the nut contact surface of the workpiece, to ensure the fastness and tightness of the connection. It can withstand the action of high pressure and high temperature to prevent leakage and loosening.
Four, nylon nut
1. What is a nylon nut?
Nylon nuts are made of nylon, also known as plastic nuts. It has the advantages of excellent insulation, non-magnetic, heat insulation, light weight, high temperature resistance, high strength, corrosion resistance and so on.
2. Application scenarios
It is often used in various industrial fields, especially in the electroplating industry and the communication industry. Compared with ordinary metal nuts, nylon nuts do not produce eddy current and other signal interference, suitable for communication and other industries, while its acid and alkali resistance is good, can be used in the electroplating industry in the strong acid and alkali environment.
5. Fasten the nut
What is a fastening nut?
A single-snap elastic locking nut often used as a secondary nut in double-nut locking structures. Because its weight is only about 5% of the ordinary nut, it is suitable for aerospace field and related applications.
2. Application scenarios
Generally not used as the main force fastener, its role is to back tight on the nut to prevent the nut loose, that is, used as a locking mother. When in use, first tighten the connector with a common nut, and then screw on the locking mother and tighten it with your hand to make it in contact with the ordinary nut, and then tighten the locking nut by 60° ~ 90° with a wrench. Tighten the hex nut when loosening. Make a gap between it and the locking nut, then the locking nut can be loosened.
6. Cap nut
1. What is a cap nut?
As the name suggests, the cap nut is a hexagonal nut with a lid. The main function of the cap is to prevent the outer part of the lid from being fastened, so as to prevent moisture or some other corrosive substances from entering the inside and thus play the role of rust prevention, thereby improving the service time of itself and the connecting parts.
Different sizes of studs use different cap nut sizes, and longer studs use higher cap nuts. There are also self-locking cap nuts with twisted threads in the hexagonal area to form a tight friction fit to prevent the nut from loosening due to vibration.
2. Application scenarios
Cover nuts serve the same purpose as hexagonal nuts. Its characteristic is that the main nut is not easy to slide, but can only be tightened using a adjustable wrench, a dead wrench, a dual-purpose wrench (open part) or a special square hole socket wrench.
It is mainly used for rough and simple parts, tires and front and rear axles in automobiles, tricycles, electric vehicles, etc., and can also be used to fix the road light frame base and some mechanical equipment that are often exposed to sunlight and rain.
Seven, slotted nuts
1. What are slotted nuts?
Slotted nuts mainly refer to hexagonal slotted nuts, that is, slots are processed above the hexagonal nuts. It is used with a screw with a hole bolt and a cotter pin to prevent the relative rotation of the bolt and nut, see GB6178 ~ 6181 and so on.
Its function is to work with the bolt with a hole in the rod part and insert the cotter pin to prevent loosening.
2. Application scenarios
By fastening through the front and rear wheel shaft screw fixed vehicle front and rear axle, so that the frame and tire fixed together, in order to prevent the nut loose, must be fixed by the cotter pin through the slot of the slotted nut, and the cotter pin to fix the slotted nut must pass through the middle of the shaft screw.
In practical applications, slotted nuts In mechanical manufacturing, slotted nuts can be used to connect various mechanical parts, such as bearings, gears, couplings, etc.
Eight, butterfly nut
1. What is a butterfly nut?
Butterfly nut is a kind of nut, with a unique shape, and the protruding arc of the head is much like a beautiful butterfly. Butterfly nut not only the appearance level is high, the functional application is not small.
Generally speaking, butterfly nuts can be divided into cold heading butterfly nuts, cast butterfly nuts and stamped butterfly nuts according to their processing technology, and can be divided into square wing butterfly nuts and round wing butterfly nuts according to their shape.
2. Application scenarios
The butterfly nut does not need other tools when used, specially designed for convenient hand twisting operation, the butterfly design of the head increases the transverse force surface, making the hand twisting more efficient, mainly used in medical equipment, wind power, aerospace, office equipment, petrochemical, electronic communication, shipbuilding industry and other equipment requiring frequent disassembly and maintenance.
Nine, T-nut
1. What is a T-nut
A nut that looks like a T and prevents the parts from loosening and rotating during installation. T-nuts also have diamond, square and other shapes. The plain rod T-nut without thread is called a thin waist bolt, which is conducive to the connection under variable force. There are special high-strength bolts on the steel structure, the head will be larger, and the size will also change.
2. Application scenarios
It is easy to install and unload, and it is easy to install parts in any position, which can greatly improve labor productivity. This is also the reason why T-nuts can be widely used in T-slots of various milling machines.
10. Reed nut
1. What is a reed nut
Spring nut is a kind of nut with self-locking function, which is composed of spring steel sheet and standard parts, which can effectively improve the stability and service life of the equipment.
2. Application scenarios
Its main feature is that it can maintain stability in the case of vibration, shock and temperature change, and has good anti-loosening performance and anti-vibration performance, which is widely used in various equipment.
The above is often used in the market nut type, each nut has its specific performance advantages and applicable application scenarios, therefore, in the selection of nuts, it is necessary to confirm the more suitable nut type according to the specific needs, use scenarios and performance requirements.