Hot Dip Galvanized Hex Bolts

Product Description

Hot Dip Galvanized hex bolts in grades 4.6, 5.6, and 8.8 offer excellent corrosion resistance, making them highly durable and suitable for outdoor and harsh environments. These bolts receive a thick zinc coating through the hot-dip galvanizing process, which protects metal from rust and extends service life, especially in construction, marine, automotive, and industrial applications. The hexagonal head design allows easy installation with wrenches, enhancing construction efficiency. Grade 4.6 bolts are typically used for light structural applications, 5.6 for medium strength demanding environments, and 8.8 for high-strength industrial and structural projects. These bolts resist loosening under dynamic loads and provide strong tensile and shear strength, perfect for load-bearing connections like steel structures, bridges, machinery, and heavy equipment. Their eco-friendly zinc coating also reduces maintenance costs over time.

Key Benefits

Superior corrosion resistance with thick zinc coating via hot dip galvanizing.

High mechanical strength suited for different grades (4.6, 5.6, 8.8) covering light to heavy-duty applications.

Long service life with minimal maintenance and resistance to rust in humid, marine, or outdoor environments.

Easy installation and removal due to hexagonal head shape.

Eco-friendly and recyclable zinc material.

Typical Applications

Structural connections in steel and concrete frameworks.

Outdoor and marine constructions exposed to harsh weather and saltwater.

Automotive, machinery assembly, and industrial equipment fastening.

Bridges, highways, transmission towers, and power plants.

Mechanical and electrical equipment.

Usage & Installation Steps

Use flat washers under the hex head and nuts for increased bearing area and secure fastening.

Suitable for bearing both tensile and shear loads in dynamic and static conditions.

Available in various sizes (M6 to M48) and thread types (half/full thread).

Compatible with hot-dip galvanized nuts for optimal corrosion resistance.

Other well-known Names for same product

Hot Dip Galvanized Hex Bolts, Grade 4.6 Hex Bolts, Grade 5.6 Hex Bolts, Grade 8.8 Hex Bolts, Corrosion Resistant Bolts, Outdoor Hex Bolts, Hot Dip Galvanized Fasteners, Structural Hex Bolts, Marine Grade Bolts, Heavy Duty Hex Bolts, Zinc Coated Hex Bolts, Industrial Fasteners.

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Technical Details

Advanced Heat Treatment for Superior Strength

These hex bolts undergo a quenching and tempering process, which elevates their mechanical strength and durability. This ensures lasting performance under demanding conditions, making them ideal for critical structures such as transmission towers. Heat treatment enhances both the toughness and tensile strength of each bolt, which is vital for vital engineering applications.


Corrosion Resistance for Outdoor Applications

With a robust hot dip galvanized and Dacromet surface treatment, these bolts resist corrosion even in challenging open atmosphere conditions. The white zinc-matte finish further bolsters their protective qualities, ensuring long-term reliability. This makes them especially suitable for use in environments exposed to weather and moisture, extending their lifespan appreciably.


Wide Range of Sizes and Compliance

Available in lengths from 40mm to 400mm and diameters of 10mm to 64mm, these hex bolts meet numerous industry standards including IS 1363, IS1364, DIN931, and DIN933. This diversity allows compatibility with a broad array of engineering projects and assures quality and standardization across different sectors in India.