Electrogalvanized Flange Nuts, also known as Hexagon Nuts with Flange, are widely used in various industrial fields. Here is a detailed introduction:
- Definition and Structure: Flange nuts are nuts with a wide - flange on one end, which can be regarded as an integrated washer. This flange is used to distribute the pressure of the nut on the fastened component, reducing the possibility of component damage, and it is not easy to loosen due to the uneven fastening surface. Most of them are hexagonal, and some flanges are serrated to play a locking role.
- Material and Hardness: They are usually made of A3 low - carbon steel, 35K high - speed steel wire, 45# steel, 40CR, 35Crmoa, etc. The hardness grades include grade 4, grade 5, grade 6, grade 8, grade 10 and grade 12. In addition, there are also stainless - steel flange nuts, which have better corrosion resistance.
- Surface Treatment: Electrogalvanized Flange Nuts are usually treated by cold electrogalvanizing, and the common coatings are color zinc plating and white zinc plating. There are also other electroplating types, such as environmental - friendly nickel, environmental - friendly blue zinc and environmental - friendly black zinc, which can meet different customer requirements for appearance and corrosion resistance.
- Features: The appearance of electrogalvanized flange nuts is smooth, silver - white, without zinc tumors and burrs. The thickness of the galvanized layer is controllable, and there is no hydrogen embrittlement and temperature damage, which can ensure that the mechanical properties of the material remain unchanged. Meanwhile, they have good corrosion resistance and surface oxidation resistance, and are firm and wear - resistant.
- Function and Application: They are mostly used in pipeline connections or workpieces that require an increased contact area of the nut. When the bolt holes of the two components to be connected are large, using flange nuts can avoid the problem of insufficient contact area between the ordinary nut and the connected component, and play a better fastening and anti - loosening role.
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