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.
1. Specifications and standards: Strictly control the production standards, so that the error is controlled within the acceptable range, and the force is uniform
2. Various specifications: various product specifications, source factory, quality assurance, welcome to place an order!
3. Production process: carefully made, strictly selected steel and carefully forged, the surface is smooth with few burrs
| 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.Where is your factory?
A.Our factory is located in rongqiao industrial area, liucheng street, nan’an, quanzhou city., fujian province in china
2.What is your MOQ?
A.For wheel bolts and nuts,need 3500 pcs per item
B.U bolt 300 pcs
C.Center bolt 1000 pcs
3.What is the finishing of your products?
A.PHOSPHATE
B.ZINC COATING
4.What is your advantage of your factory?
A.More than 20 years professional experience
B.Strong technology stuy team
C.Deliver to more than 50 countries
5.How to deliver goods?
A.Deliver by container or by LCL
6.How to pack your goods?
A.Packed by color box and neutral carton
B.Packed by wooden pallets