How to purchase high-quality screws? A screw manufacturer tells you

The screw manufacturer tells you that screws are small but important. In fact, the informal name is also called special screw because it is widely used in industry and is known as industrial rice.

Even in daily life, it is indispensable. The decoration of ordinary people is very rough. In houses with an area of over 110 square meters, 886 types of screws are used for doors and Windows, furniture, pipes, household appliances, etc. For general home decoration, the total price of screws does not exceed 1,000 yuan. However, the quality of this little thing, which is less than 1,000 yuan, cannot be ignored.

Over the years, due to screws, nuts, simple production techniques and low entry barriers, competition among screw manufacturers has declined, and the market is flooded with inferior products that fail to meet standards. When people enter the market, it is difficult to distinguish between good and bad product quality standards for screws. Among them, due to the shallow thread coverage on the furniture, inferior products are prone to fall off during movement. Some non-standard screws are also used in pipes. Due to insufficient rust prevention treatment, they will rot and leak in a short time. In addition, the screws of counterfeit and substandard products used on chandeliers are even more dangerous. Once the strength of the bearing is insufficient, it is very easy to fall off from heavy objects and cause damage.

How to purchase high-quality and discounted screws?

Measure the outer diameter. Inferior products are thinner and shorter than standard ones, obviously thinner than standard products. Even more astonishingly, the inferior products do not even have spring washers installed on the screws. The spring gasket mainly serves a pressure function. Without the extendable screws of the spring gasket, it is difficult to fix it firmly.

2. Look outside. The screws are treated with a surface technology that features high gloss, smoothness and a sand-hole interface. The workmanship of the defective screw is very rough, the thread is relatively shallow, and there are many burrs. The Angle and width of the screws are different. The grooves are too shallow and the lines are uneven. It is basically a disposable product.

3. Check the certificate of origin of the product. If the origin is Dongguan City, Guangdong Province, due to the stricter quality requirements of the supporting export product manufacturers, the quality is guaranteed and the pass rate is relatively high.