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10.9 Grade Heavy-Duty Hub Nuts , Plain Black for Vehicle Safety

Hub nut

Material: 40Cr
Thread Size: M12-M16
Surface Finish: Plain, Black
Grade: 10.9

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Description

Key Attributes

Hub nut

Material: 40Cr
Thread Size: M12-M16
Surface Finish: Plain, Black
Grade: 10.9

Specification

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40Cr Hub Nuts: 10.9 Strength, M12-M16 Sizes, Plain/Black Finish – Engineered for Reliability

The main function of the Hub nut is to fix the hub shell of the automobile tire, to ensure the stable connection between the wheel and the vehicle, so as to ensure the safety of driving. ‌‌

Core Advantages of This Hub Nut OEM-Manufactured by Tianlong

Tianlong wholesales Hub Nuts made of high-strength materials

During vehicle operation, Hub Nuts need to withstand the torque impact from vehicle start-up and braking for a long time, so choosing a reliable Hub Nut is a crucial step.

This Hub Nut OEM-manufactured by Tianlong is made of high-quality 40Cr alloy steel (with a carbon content of 0.37%-0.44% and 0.8%-1.1% chromium). This kind of steel achieves a good balance in strength, toughness and hardenability, making it especially suitable for automotive fasteners, and far superior to ordinary carbon steel.

Hub Nuts made of 40Cr can better cope with the complex forces during vehicle operation. For example, they can maintain stable fastening under the vibration impact during high-speed driving and the continuous tensile force bearing the vehicle body.

In addition, this Hub Nut can reach the 10.9 high strength grade, which is much higher than the 8.8 grade of ordinary bolts (with a tensile strength of 800MPa) and has high strength. This level of strength grade, combined with the hardenability of 40Cr alloy steel itself, can make the fastener retain sufficient toughness and avoid brittle fracture.

There are various specifications of Hub Nuts available with very precise sizes

The thread sizes of this Hub Nut cover M12-M16, which match the connection needs of most vehicle wheel hubs. If you have purchasing needs for fasteners for special vehicles, you can contact our customer service to communicate about fastener customization, and we will provide you with one-stop design and manufacturing services.

Dual surface treatments for Hub Nuts

This Hub Nut offers two surface treatment processes: plain and black oxide. Among them, Hub Nuts with plain surface treatment are suitable for dry and indoor use scenarios; black oxide treatment is more suitable for humid or industrial environments.

Performance Aspect	Plain (Uncoated) Surface Treatment	Black Oxide Surface Treatment
Corrosion Resistance	Basic; prone to rust in humid or outdoor environments.	Enhanced; forms a protective oxide layer, better resists moisture and mild corrosion.
Aesthetic Appearance	Natural metallic finish with a matte, unaltered look.	Uniform black finish, providing a sleek, industrial aesthetic.
Wear Resistance	Relies on the base material's inherent hardness; moderate.	Improved due to the hardened surface layer, reducing friction wear.
Ideal Application Scenarios	Dry, indoor settings (e.g., enclosed machinery, low-moisture vehicle compartments).	Humid environments, industrial areas, or undercarriage components exposed to moisture and debris.
Cost	Lower, as no additional coating process is involved.	Slightly higher than plain treatment, due to the oxide coating process.