HONY plastic PEEK PTFE PVDF PA POM NYLON PA66 PC PP nuts and bolts
Engineering plastic nut is a branch of various nut categories, and its function is used in conjunction with bolts to achieve the purpose of combining two or more components. Plastic nuts are also called plastic nuts. Since most of them are made of nylon materials in China, they can also be called nylon nuts.
According to the nut shape classification:
Cap type engineering plastic nuts, engineering plastic nuts with gaskets, hexagonal engineering plastic nuts, engineering plastic self-locking nuts, etc.
According to the processing material classification:
PEEK nuts, POM nuts, nylon nuts, PC nuts, PVDF nuts, PP nuts, etc.
Classification according to thread specifications:
Metric thread: M2, M2.5, M3, M4, M5, M6, M8, M10, M12, M16, M24, etc.
American thread: 2-56, 4-40, 6-32, 8-32, 10-32, etc.
Inch thread: 1/8", 1/4", 3/8", 1/2", 3/4", 1", etc.
Physical properties
1. Torsional strength of the joint between the head and the screw
2. The thread size of engineering plastic nuts needs to be standardized. Due to the water absorption of different plastics leading to size differences in different use environments, this standard is not as strict as metal nuts.
Chemical properties
1. Acid resistance
2. Alkali resistance
3. Fire rating
4. Insulation performance
Advantages of engineering plastic nuts:
Compared with ordinary metal nuts, the advantage of plastic nuts is that they have outstanding insulation properties. Since it is a non-metallic material, it will not cause signal interference problems 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. Ordinary engineering plastic nuts with better acid and alkali performance are also PVDF nuts, and then PP plastic nuts. Both nuts have very good acid and alkali properties, so they are suitable And then used in some electroplating industries.
Limitations of engineering plastic nuts:
Because engineering plastic nuts are made of plastic materials, the big defect is that ordinary plastic nuts are not as good as metal nuts in torsion and strength. If the torque is too large, there is a possibility of slippage or head fracture; engineering plastic nuts are formed by different plastics. Reasons for 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 soft material of ordinary plastics, conventional ring gauge measurement methods cannot be used.
In the field of plastic products, 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 drag chains, engineering plastic non-standard parts and other products
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