Heavy Duty Hex High Nuts / Extra Thick Hex Nuts (SAE J482 / SAE J995 Gr. 2) – Zinc Plated & HDG – Manufacturer Direct

Premium Hex High Nuts: Enhanced Thread Engagement for Critical Fastening

At Handan Bolt, we specialize in manufacturing high-precision Hex High Nuts, also known in the industry as Extra Thick Hex Nuts or Heavy Duty High Nuts. Produced in our ISO-certified facility in Yongnian, China, these fasteners are specifically engineered for applications where standard-height nuts are insufficient. By offering a significantly taller profile, our high nuts provide increased thread engagement, which is essential for preventing thread stripping in high-tension or high-vibration environments.

What Defines a Hex High Nut?

A Nut (Read more on Wikipedia) becomes a “High Nut” when its height is substantially greater than its nominal diameter. Following the SAE J482 dimensional standard, these nuts are designed to distribute the clamping load over a larger number of threads. This makes them the fastener of choice for heavy machinery, automotive suspension systems, and structural steel connections where safety and structural integrity are non-negotiable.

Technical Standards and Grade Specifications

We strictly adhere to the technical parameters highlighted in our product data:

• Standard: SAE J482: This standard ensures that the nut’s dimensions, particularly its height and width across flats, meet rigorous industrial requirements for heavy-duty service.
• Grade: SAE J995 Grade 2: These nuts are manufactured from high-quality low to medium carbon steel. While Grade 2 is the standard commercial grade, the “High” design enhances its performance, making it robust enough for a wide variety of construction and maintenance tasks.

Key Benefits of Using Extra Thick Hex Nuts

1. Preventing Thread Stripping: The additional height means more internal threads are in contact with the bolt. This significantly reduces the risk of “stripping” the threads when high torque is applied during installation.
2. Superior Load Distribution: By spreading the tension across more threads, the stress on each individual thread is minimized, extending the life of both the nut and the bolt.
3. High Vibration Resistance: In machinery subject to constant movement, the increased frictional surface area within the high nut helps maintain the clamping force better than standard nuts.

Surface Treatment and Corrosion Protection

Environmental durability is a core feature of Handan Bolt products. We offer multiple finishes to match your specific needs:

• Zinc Plated (Clear/Blue or Yellow): The standard commercial finish providing excellent rust protection for indoor or dry outdoor environments.
• Hot Dip Galvanized (HDG): A thick, metallurgical zinc coating essential for infrastructure, bridges, and outdoor structures exposed to the elements.
• Black Oxide / Plain: Often used in oiled conditions for internal machinery components where corrosion is not a primary concern.

Common Applications

Our Hex High Nuts are ubiquitous in sectors where standard fasteners might fail:

• Automotive Industry: Used in wheel studs and suspension components where high torque is mandatory.
• Heavy Machinery: Essential for hydraulic systems and agricultural equipment that undergo high-stress cycles.
• Steel Construction: Securing base plates and structural joints where extra thread safety is required.

Why Source from Handan Bolt?

Direct Factory Value: As a leading manufacturer in Yongnian, we eliminate the middleman, providing you with competitive wholesale pricing without compromising on quality control.
Customization: While we stock standard SAE sizes, we can produce custom high nuts “According to Drawing” to meet your unique engineering challenges.
Export Expertise: We understand the specific packaging and shipping requirements of the international market, ensuring your order arrives in perfect condition.

Request a Bulk Quote Today

Are you looking for a reliable factory partner for your fastener supply chain? Whether you need standard SAE J482 high nuts or custom-designed thick nuts, Handan Bolt is ready to fulfill your requirements.

Ready to secure your project with high-quality nuts?

Please click here to Contact Our Sales Team for a Free Quote. We typically reply within 12 hours!