Basic knowledge of cap nuts

Basic knowledge of cap nuts

Definition of cap nut:

Cap nut, 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 and prevent moisture or other corrosive substances from entering the inside, thus playing a rust preventive role and improving the service life of itself and the connecting parts.

Surface treatment:

In general, the surface of cap nuts needs to be treated, including some surface treatment processes such as zinc plating, nickel plating, chromium plating, and dacromet, to make them more rust resistant and improve the service life of fasteners. Among these surface treatment processes, chromium plating is the best one. The products produced by chromium plating not only have a smooth and bright surface, but also have a longer rust and anti-corrosion time, which can be comparable to stainless steel.

Application scope:

Cap nuts are mainly used on tires and front and rear axles of automobiles, tricycles, electric vehicles, and other vehicles to fix the tires, front and rear left and right sides. They can also be used to fix the base of street light frames that are often exposed to sunlight and rain, as well as some mechanical equipment.