Hub bolts are high-strength bolts that connect vehicles to the wheels. The connection location is the hub unit bearing of the wheel! Generally, class 10.9 is used for mini-medium vehicles, class 12.9 is used for large-sized vehicles! The structure of the hub bolt is generally a knurled key file and a threaded file! And a hat head! Most of the T-shaped head wheel bolts are above 8.8 grade, which bears the large torsion connection between the car wheel and the axle! Most of the double-headed wheel bolts are above grade 4.8, which bear the lighter torsion connection between the outer wheel hub shell and the tire.
| hardness | 36-38HRC |
| tensile strength | ≥ 1140MPa |
| Ultimate Tensile Load | ≥ 346000N |
| Chemical Composition | C:0.37-0.44 Si:0.17-0.37 Mn:0.50-0.80 Cr:0.80-1.10 |
| hardness | 39-42HRC |
| tensile strength | ≥ 1320MPa |
| Ultimate Tensile Load | ≥406000N |
| Chemical Composition | C:0.32-0.40 Si:0.17-0.37 Mn:0.40-0.70 Cr:0.15-0.25 |
The main function of the hub screw is to fix the hub. When we modify the hub, what kind of hub screw should we choose?
The first anti-theft screw. Anti-theft hub screws are still more important. Instead of comparing the hardness and weight of hub screws, it is better to first determine whether your hub is on your car. There are cases of wheel theft from time to time, so many anti-theft screws are designed to prevent theft by designing special patterns on the ends of the screws or nuts. After installing such a hub screw, if you need to remove it, you need to use a wrench with a pattern for construction. For some friends who install high-priced wheels, this is a good choice.
The second lightweight screw. This kind of screw is designed to be lightly treated, which is much lighter than ordinary screws, so the fuel consumption will also be slightly reduced. If it is a lightweight screw from a copycat brand, there may be a problem of cutting corners. Although the screw is lighter, its hardness and heat resistance are insufficient, and there may be problems such as breakage and tripping during long-term driving. Therefore, large brands should be selected for lightweight screws.
The third competitive screw. No matter what type of modified parts, as long as there is the word "competitive", they are basically high-end products. All competition screws are forged, and they must be annealed and lightened during the design process. This results in good performance in terms of hardness, weight and heat resistance. Whether it is a family car or a racing car running on the track, it is a good thing with no harm. Of course, there will be a gap between the price and ordinary screws.
Q1:How many sales do your factory have?
We have 14 professional sales,8 for domestic market,6 for foreign market
Q2:Do you have testing inspection department?
We have inspection department with control laboratory of quality for torsion test, tensile test, metallography Microscope, hardness test, polishing, salt spray test, material analysis, impat test.
Q3: Why choose us?
We are the source factory and have a price advantage. We have been manufacturing tire bolts for twenty years with quality assurance.
Q4: What truck model bolts are there?
We can make tire bolts for all kinds of trucks around the world, European, American, Japanese, Korean, and Russian.
Q5: How long is the lead time?
45 days to 60 days after placing the order.
Q6: What's the payment term?
Air order: 100% T/T in advance; Sea Order: 30% T/T in advance, 70% balance before shipping, L/C,D/P, western union, moneygram