Engineering plastic nuts are a branch of various types of nuts. Their role is used with bolts to achieve the purpose of combining two or more components together. Plastic nuts are also called plastic nuts. Because most of them are made of nylon materials, they can also be called nylon nuts.
Classification of engineering plastic nuts:
According to the shape of the nut:
Cover type engineering plastic nut, engineering plastic nut with gasket, external hexagon engineering plastic nut, engineering plastic self-locking nut, etc.
According to the processing material classification:
PEEK nut, POK nut, nylon nut, PC nut, PVDF nut, PP nut, etc.
Classification according to thread specifications:
Metric thread:M2,M2.5,M3,M4,M5,M6,M8,M10,M12，M16,M24等。
American thread:2-56，4-40，6-32，8-32，10-32等。
Inch thread:1/8",1/4",3/8",1/2",3/4",1"等。
Performance of engineering plastic nuts:
Physical properties
1. Torsion strength of the joint between head and screw
2. The thread size of engineering plastic nuts needs to be standardized. This standard is not as strict as metal nuts due to the water absorption of different plastics resulting in dimensional differences in different use environments.
Chemical properties
1. Acid resistance
2. Alkali resistance
3. Fire rating
4. Insulation performance
Advantages of engineering plastic nuts:
Compared with ordinary metal nuts, plastic nuts have the advantage of outstanding insulation properties. Because it is a non-metallic material, it will not cause signal interference under the influence of current or other signals, and is very suitable for use in communications and other industries. In addition, the acidity and alkalinity of plastic nuts are also outstanding. The general engineering plastic nuts with good acid-base properties are also PVDF nuts, and then PP plastic nuts. Both types of nuts have very good acid-base properties, so they are suitable for And then used in some electroplating industry.
Limitations of engineering plastic nuts:
The engineering plastic nut is made of plastic material, so its great defect is that the torque and strength of ordinary plastic nuts are not as good as metal nuts. If the torque is too large, there may be slipping teeth or head breakage; engineering plastic nuts are molded from different plastic Reasons such as shrinkage, changes in temperature and humidity, and the length of the molding cycle lead to large tolerances in the size of plastic nuts. In addition, due to the softness of ordinary plastic materials, the conventional ring gauge measurement method cannot be used.
In terms of the entire plastic products field, engineering plastic nuts occupy a relatively small share. Other products in the field of plastic products include: engineering plastic bearings, engineering plastic gears, engineering plastic towline, engineering plastic non-standard parts and other products.
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