A rust proof hexagonal nut with a cover, as the name suggests, is a hexagonal nut with a cover. The function of this cover is to tighten the exposed part on the outside, prevent moisture or other corrosive substances from entering the inside, and thus play a rust proof role, thereby improving the service life of itself and the connecting parts.
Materials used for cap nuts: Our products mainly use carbon steel (including low-carbon steel, medium carbon steel, high carbon steel, spring steel), stainless steel (SUS303, SUS304, SUS316), alloy steel, nylon, and so on.
Surface treatment of cap nuts:
When we use cap nuts, the surface of the cap nut usually needs to be treated, including surface treatment processes such as galvanizing, nickel plating, chrome plating, and Dacromet, to make it more rust proof and effectively improve the service life of the fastener. Among these surface treatment processes, chrome plating is the best process. The products produced by chrome plating not only have a smooth and bright surface, but also have a longer rust and corrosion resistance time, Its effect can be comparable to stainless steel.
The use of cap nuts is the same as that of hexagonal nuts. Its characteristic is that the main nut is not easy to slide, but can only be tightened with a wrench, a solid wrench, a dual-purpose wrench (open part), or a special square hole socket wrench.
Mainly used for rough and simple components, such as tires and front and rear axles in cars, tricycles, electric vehicles, etc. It can also be used to fix road lamp holders and some mechanical equipment that are often exposed to sunlight and rain.
