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Fasten The Screw Nut: A Guide to Heavy Nut and Flange Nut Applications

Nuts are essential fasteners used in various industries, from automotive to construction. Among the many types available, Heavy Nuts and Flange Nuts are widely used due to their unique structural advantages.

ASTMA194/A563 Carbon Steel Heavy Duty Nuts

ASTMA194/A563 Carbon Steel Heavy Duty Nuts

Heavy Fasteners Nuts: Enhanced Strength for Demanding Applications

Heavy Nuts, also known as thick hex nuts, are designed for high-stress environments where standard nuts may fail. Their thicker construction provides greater load distribution and resistance to vibration loosening.

Key Features of Heavy Nuts:
Material: Typically made from carbon steel, stainless steel, or alloy steel.
Thread Type: Coarse or fine threads depending on application.
Strength Grade: Common grades include Grade 8 (SAE) and Grade 10 (Metric).
Applications: Used in heavy machinery, structural steel connections, and high-tension bolting.

Performance Data Comparison (Heavy Nut vs. Standard Nut)

Feature Heavy Nut Standard Nut
Thickness 1.5x thicker Standard thickness
Tensile Strength Up to 150,000 psi ~120,000 psi
Vibration Resistance High Moderate

Flange Nut: Integrated Washer for Secure Fastening

Flange Nuts feature a built-in washer-like flange that distributes pressure and prevents loosening under dynamic loads. They are commonly used in automotive and aerospace applications.

Key Features of Flange Nuts:
Material: Often made from stainless steel, brass, or nylon (for anti-corrosion).
Flange Design: Serrated or smooth to enhance grip.
Locking Mechanism: Some have nylon inserts for vibration resistance.
Applications: Automotive assemblies, electrical enclosures, and piping systems.

Performance Data Comparison (Flange Nut vs. Standard Nut)

Feature Flange Nut Standard Nut
Load Distribution Wider surface area Limited
Loosening Resistance High (due to flange) Moderate
Corrosion Resistance Optional (stainless/nylon) Depends on material