Wheel Hub Bolt Lug Stud Nut

Product Description

hub bolt

The role of the hub bolt is to install the parts of the axle, used to support the tire, buffer the external impact, realize the contact between the tire and the road surface, transfer the body weight to the road surface, bear the lateral load, driving force and braking force torque when turning, and ensure the driving performance of the vehicle.

The role of the hub bolt is to install the parts of the axle, used to support the tire, buffer the external impact, realize the contact between the tire and the road surface, transfer the body weight to the road surface, bear the lateral load, driving force and braking force torque when turning, and ensure the driving performance of the vehicle.

The role of the hub bolt is to install the parts of the axle, used to support the tire, buffer the external impact, realize the contact between the tire and the road surface, transfer the body weight to the road surface, bear the lateral load, driving force and braking force torque when turning, and ensure the driving performance of the vehicle.

The structure of the tire screw is very simple, which is composed of screws, nuts and washers. According to the different screw structure, it can also be divided into single-headed bolts and double-headed bolts, the vast majority of cars are now single-headed bolts, and double-headed bolts are generally used in small and medium-sized trucks. There are two kinds of single-head bolt installation, one is the hub bolt + nut, the bolt is fixed on the hub with interference fit, and then the wheel is fixed by the nut, the general application of Japanese and Korean series car is more, the vast majority of trucks also use this way. The advantage of this method is that the wheel is easier to locate, the wheel is easier to disassemble, and the safety is higher. The disadvantage is that the tire screw is more troublesome to replace, and some need to remove the wheel hub; The other is the wheel fixing bolt, the thread is directly processed on the wheel hub, and the tire screw is directly screwed on the wheel hub, which is generally used more in European and American small cars. The advantage of this method is that the tire screw disassembly and replacement is relatively easy, the disadvantage is that the safety is slightly poor, if repeatedly disassembly the tire screw, it will damage the thread on the wheel hub, so it must be replaced.

Automobile tire screws are generally made of high-strength steel, and the strength level of the screws is printed on the head of the tire screws, there are 8.8, 10.9, 12.9, and the larger the value, the higher the strength. Here 8.8, 10.9, 12.9 refers to the performance grade label of the bolt, which is composed of two parts, respectively, indicating the nominal tensile strength value and the strength ratio of the bolt material, generally expressed by "X.Y", such as 4.8, 8.8, 10.9, 12.9 and so on. The tensile strength of bolts with performance grade 8.8 is 800MPa, the bending strength ratio is 0.8, and the yield strength is 800×0.8=640MPa. The tensile strength of bolts with performance grade 10.9 is 1000MPa, the bending strength ratio is 0.9, and the yield strength is 1000×0.9=900MPa.

And so on. Generally, the strength of 8.8 and above, the bolt material is low carbon alloy steel or medium carbon steel, and the heat treatment is called high strength bolts. Car tire screws are high-strength bolts, different models, different load, matching bolt strength is also different, 10.9 is the most common, 8.8 is generally matched on the lower end of the model, 12.9 is generally matched on the heavy truck.

Welcome to our company, based in Nanjing, Jiangsu, China. We pride ourselves on being a leading enterprise specializing in the engineering design, planned production, and comprehensive pre-and post-sales services for custom screws. Our state-of-the-art facility spans 6200 square meters, equipped with advanced multi-functional machinery, and boasts a dedicated team of approximately 80 employees committed to providing tailored screw solutions. At the core of our operations is our adherence to the ISO9001:2015 quality management system, ensuring the superior quality of each and every screw product.

Professional Engineering Team:
With a team boasting over 15 years of experience, our engineering professionals possess extensive expertise. They deeply understand customer requirements, offering insightful advice for customized screw solutions.

Custom Screw Design Services:
We provide extensive design services for customized screws, collaborating closely with clients to gain in-depth insights into application scenarios and requirements. This results in precision-designed screws tailored to specific needs, encompassing dimensions, shapes, materials, and performance.

Diverse Material Options:
Choose from a diverse selection of screw materials, covering various metals and alloys to meet the specific demands of different environments and applications. Additionally, we possess the capability to process screws from special materials.

Advanced Production Equipment:
Equipped with cutting-edge multi-functional production machinery, including cold and hot forging equipment, as well as composite processing machinery. Our expertise lies in designing automated equipment for the production of non-standard screws, ensuring high-quality, high-precision, and cost-effective custom screw production.

Stringent Quality Control:
We've established a comprehensive quality control system strictly adhering to ISO9001:2015 standards. Advanced testing methods, such as dimensional checks, material composition analysis, and mechanical performance testing across more than 10 dimensions, guarantee that custom screws meet both industry standards and customer expectations.

Flexible Production and Delivery Capability:
With 15 years of production experience, our production plans, coupled with partnerships with 89 various processing collaborators, allow for flexible production capabilities. We can meet customer demands for different quantities and specifications of custom screws, be it small-batch or large-scale production.

Prompt Communication Response:
Every customer is assigned a dedicated business representative, ensuring proactive communication. Regular progress reports are provided to ensure mutual understanding and enhance the smoothness of collaboration.

Our mission is to create value for both customers and employees. We look forward to establishing a long-term partnership with you, collectively driving the development of both parties.