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 |
1.What is your logo?
Our logo is JQ and we could also print your own registered logo
2. What is the grade of your products?
A.Hardness is 36-39,tensile strength is 1040Mpa
B.Grade is 10.9
3. What is your yearly output?
18000000 PCS for production each year.
4.How many staff do your factory have?
200-300affs we have
5.When did your factory found?
Factory was founded in 1998,with more than 20 years experience
6.How many squares of your factory?
23310 squares
7.How many sales do your factory have?
We have 14 professional sales,8 for domestic market,6 for foreign market