What is grounding bolt and how many types used on automotive

What is grounding bolt and how many type used on automotive car

We know that grounding bolt have important applications in the automotive industry. If the grounding bolt has quality problems, it may cause serious safety problems in the car and have to recall the cars that have been sold. Today we are going to talk about what is the grounding bolt and how many types have.

Common types of ground bolts

-The grounding bolts on some Japanese, Korean and European cars adopt imprinted grouding bolts with self-cleaning paint function.

-The threaded head of grounding bolts on the Japanese automobile adopts a three-equivalent volume cutting groove, and the structure is symmetrically embossed on the outer  diameter of the bolt. The embossing depth is about 0.3mm, the length is about 5mm, and the width is about 1.5mm. Print a small plane and use a combined washer. The diameter of the flat washer is larger than that of a normal flat washer and there is a spring washer to avoid rotation of the terminal;

-The grounding bolts on Korean cars adopt the structure of 6 rolling helix lines, which deform the thread form microscopically, and have the same function as the as the Japanese car with the system to remove the paint in the nut.



There is also a grounding bolt assembly with a cap nut, which is mainly used on Volkswagen, General Motors and other vehicles, and has good electrical conductivity, but the relative cost is higher.

Nowadays,cars are try use aluminum alloy material as much as they can,so many fasteners suppliers have developed a aluminum grouding bolts with cap nut so that they can be easily welded to the car. On the body, of course, some suppliers have developed riveted ground bolts, which are directly riveted to the aluminum alloy body.

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