An important factor in the selection of head s both studsand bolts is the material from which they are made. There are two requirements for it – high strength and aesthetic appearance. More often good steel is used, and more expensive disc mounts are made from high quality alloys. But in any case, both of them will provide a reliable fastening of the wheel.Bolts and studsmay also differ from each other in appearance by the way the material is coated. Manufacturers produce chrome-plated bolts, as well as zinc and nickel plated parts. The technology of a durable protective coating still does not exist. Therefore, the appearance of the fasteners is not related to their performance characteristics and the service life of conventional, Nyloc Nut Brisbane, chrome-plated and nickel-plated bolts and studsis approximately the same. The good appearance of even the highest quality coated studsis maintained under our road conditions for no longer than one year of operation.
Mounting selection and installation:
Having decided on the material and appearance, we proceed to the selection of
Head studs and bolts according to their sizes. In addition to choosing the right studsand bolts for alloy wheels, you also need to install and tighten them correctly.A loose part can lead to a quick breakdown of the car’s chassis and cause an emergency. Each disk model has its own hardware.
There are several ways to select bolts with the desired length:
- First way. You can buy wheel bolts that your manufacturer recommends;
- The second way is to try on the disc fasteners locally, if possible. Or you can unscrew the old bolt in order to eliminate an error and try on a new one, choosing the necessary option;
- The third method is to calculate the mountings for the wheels mathematically. In order for the nut or bolt to provide maximum safety on the road, it is necessary to make at least 7-9 full turns of the wrench when tightening. To determine if this can be done with a new bolt, you can use an old one already used on your car. We unscrew the bolt and count the revolutions. After that, we divide the resulting number by the length of the bolt itself. In this way, the length of one turn during tightening is determined. It remains to multiply this figure by the number of revolutions, that is, by 7.8 or 9. As a result, we get the required bolt length.
- The fourth way is to determine the minimum engagement. This method consists in achieving a minimum engagement length equal to the thread diameter of the fastener. For example, if the nut shank is 15 mm in diameter, the nut must engage the thread by at least 15 mm. This provides a minimum theoretical engagement for the correct clamping load. The deeper the thread engagement, the longer it takes to actually lose the fastener.In the event that during installation there was a problem of mismatching the size of the bolts, it can be solved by purchasing eccentric bolts. For example, if the PCD is 97 mm, but you need 99 mm, then the eccentrics compensate for the divergence due to the cone on the product. There are bolts with an eccentric tolerance of 2.4 mm. Such an eccentric bolt allows you to install discs from other cars, for example, Japanese from German and vice versa. In this case, the parameters of disks and hubs should not exceed 2.4mm.
It’s important to know:
Remember that the stamping mount will not work with alloy wheels. The main difference between the “stamping” wheel bolts and the “cast” bolts is the width as well as the depth of the mounting hole well. Bolts for metal rims are usually shorter than for alloy rims.The center of the cast disc is thicker than steel and requires longer bolts or studs. Bolts and studsfor such wheels must have a head that excludes “grinding” of the edges of the mounting hole of the wheel with the edges of the head;
Any wheel bolt or nut, regardless of the material from which it is made, is designed for 30-40 cycles “unscrew-tighten”. After the resource is exhausted, the wheel studsor bolts are recommended to be replaced, otherwise there is a high probability of damage to the threads.
