Our company has not only manufactured leveling lift kits and wheel spacers & wheel adapters, we also supply wheel nuts, wheel bolts, hub rings, winch parts & other auto parts. Most of the wheel nuts and wheel bolts are made of steels, but they also can be made of aluminum. Hub rings can be made of aluminum or plastic. We also supply many winch parts, if you are interested, you can take a look at our winch parts.
Lug nuts (or lug bolts) have one of the most important jobs on a vehicle, to keep your wheels and tires secured to your vehicle. While there is no universal lug nut size, there are fortunately only about ten or so thread sizes and pitches that make up a lug nut's size.
Steel or aluminum.
The size of the centric rim depends on two things: the center bore of the rim and the outer diameter of the car's wheel hub. For example, if the diameter of the wheel hub is 72.6 mm, and the wheel center bore is 74.1 mm, a centric ring with a diameter of 1.5 mm is needed in-between, so the right size is 74.1 - 72.6 mm.