M3 M4 Nylon Plastic Material PA66

2 month ago

3 0 

5 year

Product details

Choosing the right screws is crucial in industrial and home repairs. Today I would like to share with you some tips about plastic screws, especially those scenarios that require resistance to high temperatures, strong acid and alkali environments.

Screws made of PA66 nylon are widely used in electronic equipment, the chemical industry, and outdoor facilities due to their excellent insulating properties and chemical resistance. This material is not only lightweight, but also effective in preventing the risk of electric shock and ensuring safety in use.

Nylon screws (plastic screws), also known as plastic screws, commonly used in the domestic nylon screws are mostly made of nylon 66 (NYLON66), also known as plastic screws

According to the material points nylon screws, PC screws, PVDF screws, PP screws, etc

According to the type of screw head points in accordance with the shape of the head can be divided into: pan head nylon screws, countersunk nylon screws, hexagonal nylon screws, hexagonal nylon screws, nylon set screws, etc.

In accordance with the shape of the groove can be divided into: cross, a word (slotted), hexagonal, the word “rice”, plum and so on according to the specifications of the screw threads sub-metric

screw threads M2,M2.5,M3,M4,M5,M6,M8,M10,M12

Metric threads 2-56,4-40,6-32,8-32,10-32

According to the above classifications can be combined with many different types of nylon screws.

Physical performance indicators

1. Head and screw combination of torsion

2. Head groove, especially the cross head whether to match the standard head size of the screwdriver.

3. Nylon screws have standardized thread O.D., M.D., and B.D. dimensions. This standard is not as strict as that of metal screws due to the water absorption of different plastics, which leads to the size difference under different usage environments.

Chemical performance indicators

1. Acid resistance

2. Alkali resistance

3. Fire rating

4. Insulation performance

Advantages

1. Compared with ordinary metal screws, nylon screws, the biggest advantage is that his insulation performance is good, non-conductive. 2.

2. In addition, because of non-metallic manufacturing, under the influence of electric current or other electrical signals will not produce eddy currents and other signal interference, and its anti-interference advantages are suitable for communication and other industries.

3. Nylon screws acid and alkali resistance is better, which is best PVDF screws followed by polypropylene, both have strong acid and alkali resistance, and plastic screws compared to the first two, resistance to strong acid and alkali performance is relatively poor, so in some of the plating industry of strong acid and alkali environments, nylon screws, especially PVDF screws have a very wide range of applications

Defects

1. Nylon screws the biggest defects of the ordinary nylon screws Torque and strength is not as good as ordinary metal screws, torque is too large there is the possibility of slippery teeth or head fracture.

2. Due to different plastic molding shrinkage reasons, temperature and humidity changes, as well as the length of the molding cycle and other reasons lead to nylon screw size error tolerance. In addition, due to the softness of ordinary nylon, it is not possible to use the conventional ring gauge measurement method.

Water-absorbent

Nylon is very “love” to absorb water, in different temperatures, humidity nylon products will absorb water to reach a certain percentage of its own content is to stop absorbing water, both the so-called “equilibrium point”. The proportion of water absorption at the equilibrium point will change with the changes in the surrounding environment (temperature, humidity, etc.).

The speed of water absorption of nylon is also related to the wall thickness of the product.

The control of the amount of water absorption of nylon has a great impact on the actual application of the product

1. The amount of water absorption is very important to the performance of the nylon product

- The products just produced are generally hard and brittle, with poor elasticity and easy to break.

- To get higher tensile strength, the proportion of water absorption should be small

- To get better toughness, the proportion of water absorption should be higher

2. How the proportion of water absorption affects the performance of nylon products:

- high proportion of water absorption will affect the product has:

better endurance (fatigue), better toughness, better elongation

- high proportion of water absorption also affects the product:

reduce the tensile strength, reduce the electrical insulation, reduce dimensional stability

Application areas

Nylon screws with insulation, non-magnetic, corrosion resistance, beautiful, never rust and other high-quality characteristics, and modified engineering plastics, its strength, impact resistance and metal comparable to what we often say nylon screws commonly known as RENY screws added 30% glass fiber, its mechanical properties are far superior to the ordinary nylon, nylon screws using the material is becoming more diversified, the performance is constantly improving, the field of application is also Wider and wider application fields.

1, Medical equipment industry (insulation, non-magnetic, environmental protection, anti-interference number, so that the use of medical machinery and equipment safer)

2, Wind power and electric power industry (chassis circuit PCB board isolation, insulation)

3, Aerospace industry (electronic equipment, insulation, anti-interference number)

4, Office equipment industry (never rust, beautiful and practical)

5, Petroleum and chemical industries (high temperature, chemical and corrosion resistance to prolong the service life of the equipment) 6, electronics industry (insulation, insulation, chemicals, corrosion resistance to extend the equipment) Service life)

6, The electronics industry (insulation, anti-interference, light weight)

7, The communications industry (insulation, non-magnetic, safety)

8, The marine industry (acid, alkali and corrosion resistance, to extend the service life) and so on ....

Nylon screw specifications, complete size to meet the needs of different occasions.