10.9 Grade 40Cr Hub Bolts for Heavy-Duty Use
10.9 Grade Hub Bolts (40Cr) – M12-M24 Threads, Plain/Black/HDG for Heavy-Duty Use
The main functions of Hub bolt include fixing hub, supporting tire, buffering external impact, transferring body weight, bearing lateral load, driving force and braking force torque when turning, so as to ensure vehicle performance 12.
Hub bolt fix the wheel on the hub through the combination of nuts and washers to ensure the stability and safety of the wheel during the driving process. In addition, the hub bolts also bear the torque transmission from the gearbox, and are subjected to the double action of tensile and shear forces at work
Advantages of Hub Bolts Wholesaled by Tianlong
1. Tianlong's wholesaled hub bolts are made of alloy materials with excellent strength
The hub bolts OEM-manufactured by Tianlong are made of 40Cr alloy steel, which is an excellent high-strength alloy material. Combined with the 10.9 high strength grade, its tensile strength can reach 800-1000MPa, far exceeding that of ordinary carbon steel bolts.
2. Offering a wide range of bolt specifications
The hub bolts OEM-manufactured by Tianlong have a very rich variety of thread sizes. The product covers various thread models such as M12-M24, which can be used for component connection of wheel hubs of various vehicle models.
In addition, according to production needs, we provide three options for surface treatment processes: Plain, Black, and Hot-Dip Galvanized (HDG).
| Surface Treatment Process | Corrosion Resistance | Aesthetic Appearance | Wear Resistance | Typical Application Scenarios | Cost |
|---|---|---|---|---|---|
| Plain (Uncoated) | Basic (susceptible to rust in humid environments) | Natural metal finish, matte | Moderate (depends on base material) | Indoor machinery, dry environments, temporary fastening | Lowest |
| Black (Black Oxide) | Improved (resists light corrosion; better with oil coating) | Uniform black finish, sleek | Enhanced (hardened surface layer) | Automotive undercarriage, general industrial use, aesthetic requirements | Moderate |
| Hot-Dip Galvanized (HDG) | Excellent (thick zinc layer provides long-term protection against harsh elements) | Bright silver-gray, glossy | High (zinc layer adds durability) | Outdoor/heavy-duty use (e.g., trucks, construction vehicles), coastal or high-moisture areas | Highest |
3. High quality with excellent durability
The 40Cr material selected for Tianlong's hub bolts, after undergoing internationally leading heat treatment, achieves a perfect balance between toughness and wear resistance, and its comprehensive performance ranks among the world's top levels.
