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Yellow Zinc Plated,Round Domed Head Square Neck Carriage Bolt DIN603,M 6 /8 /10 /12 /16
Diameter range (mm)：M5-M24，3/16-1'Length range (mm)：16-600，1''-2'
cross recessed screws are used in large quantities in our daily life, but the common problems and their solutions in daily use are not widely known, such as common problems such as anti-loose, rust, and breakage. Once these problems occur, replace the screws if they are small. , The larger ones cause destructive damage to the equipment components, so how to avoid these problems, the following is a list of these common problems and their prevention methods.
Anti-loosening problem of stainless steel screws
Simply speaking, it is necessary to use cross recessed screwson product materials so that the cross recessed screws will not fall off lightly. The screws and the product materials need to be connected more tightly. For the solution of preventing loosening of stainless steel screws, there are the following two solutions:
Use special materials for the resilience, such as engineering resin materials, which have better resilience. Attach it to the stainless steel screw thread. Make it mechanically rub against the nut or the material product. Produce vibration and resistance. Solve the problem of loose screws.
Apply a layer of glue on the threads of stainless steel screws, the so-called glue. This glue is called anti-fall glue. This glue has good properties such as high stickiness. This glue is applied to stainless steel screws, and after drying, it has strong adhesion. The stainless steel screw thread can be combined with the nut thread, or after the threaded hole of the product is joined, a super-caused tightening effect can be produced. Play a good anti-loose effect.
Second, the rust problem of stainless steel screws
The attachment of dust or foreign metal particles, in the humid air, the attachment and the condensed water of the stainless steel screw connect the two to form a micro battery, which triggers an electrochemical reaction and damages the protective film, which is called electricity Chemical corrosion.
The surface of the stainless steel screw adheres to the organic juice (such as melon, vegetable, noodle soup, sputum, etc.), which forms organic acid in the presence of water and oxygen, and the organic acid will corrode the metal surface for a long time.
The surface of cross recessed screwscontains acid, alkali, and salt substances (such as alkaline water and lime water splashing on the decoration wall), causing local corrosion.
In polluted air (such as the atmosphere containing a large amount of sulfide, carbon oxide, and nitrogen oxide), it will form sulfuric acid, nitric acid, and acetic acid liquid spots when encountering condensed water, causing chemical corrosion.
