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Lewei Hardware is a company with 20 years of experience in producing non standard hardware parts and standard fasteners.

HDG Grade 5, Grade 8 Carriage Bolts - Square Neck Bolt and Round Head Bolt 1
HDG Grade 5, Grade 8 Carriage Bolts - Square Neck Bolt and Round Head Bolt 2
HDG Grade 5, Grade 8 Carriage Bolts - Square Neck Bolt and Round Head Bolt 3
HDG Grade 5, Grade 8 Carriage Bolts - Square Neck Bolt and Round Head Bolt 4
HDG Grade 5, Grade 8 Carriage Bolts - Square Neck Bolt and Round Head Bolt 5
HDG Grade 5, Grade 8 Carriage Bolts - Square Neck Bolt and Round Head Bolt 6
HDG Grade 5, Grade 8 Carriage Bolts - Square Neck Bolt and Round Head Bolt 7
HDG Grade 5, Grade 8 Carriage Bolts - Square Neck Bolt and Round Head Bolt 1
HDG Grade 5, Grade 8 Carriage Bolts - Square Neck Bolt and Round Head Bolt 2
HDG Grade 5, Grade 8 Carriage Bolts - Square Neck Bolt and Round Head Bolt 3
HDG Grade 5, Grade 8 Carriage Bolts - Square Neck Bolt and Round Head Bolt 4
HDG Grade 5, Grade 8 Carriage Bolts - Square Neck Bolt and Round Head Bolt 5
HDG Grade 5, Grade 8 Carriage Bolts - Square Neck Bolt and Round Head Bolt 6
HDG Grade 5, Grade 8 Carriage Bolts - Square Neck Bolt and Round Head Bolt 7

HDG Grade 5, Grade 8 Carriage Bolts - Square Neck Bolt and Round Head Bolt

Step into the world of sturdy construction with the HDG Grade 5 and Grade 8 carriage bolts. Picture a bustling construction site where these square neck bolts and round head bolts are the unsung heroes, holding everything together with their reliable grip. With their durable hot-dip galvanized coating, these bolts are ready to tackle any project with strength and resilience. Upgrade your hardware game and make these bolts your go-to choice for all your building needs.

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    Customized
    DIN603
    Surface
    Hot DIP Galvanizing
    Lead Time
    10 days (1 - 10000 Pieces)
    Package Gross Weight
    20.000kg
    Package Size
    24.00cm * 23.00cm * 17.00cm
    Production Capacity
    1000000/M
    HS Code
    731815090
    Origin
    China
    Trademark
    LW
    Specification
    M3-M100
    Transport Package
    Plastic Bag+ Carton+Wood Pallet
    Thread
    Unc,Unf,Nef
    Finish
    Hot Galvanizing
    Application
    Machinery, Building, Photovoltaic,Car,Railway
    Grade
    Grade 5
    Standard
    DIN, ANSI, GB, JIS, BSW
    Head Style
    Round

    Premium Quality Carriage Bolts 

    Our HDG Grade 5, Grade 8 Carriage Bolts feature a square neck bolt and round head bolt design, allowing for secure fastening in machinery, chemical industry, building and more. With a variety of finishes including zinc plated, black oxide, nickel, chrome, and hot-dipped galvanized, these bolts are available in sizes ranging from 1/2"-1 1/2", and made from high-quality materials such as carbon steel, alloy steel, stainless steel, and brass. Get all your fastening needs met in one place with our one-stop shopping, high-quality, and competitively priced bolts for timely delivery and reliable performance.

    ● HDG Grade 5 Carriage Bolts

    ● Grade 8 Carriage Bolts

    ● Square Neck Bolts

    ● Round Head Bolts

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    High Tensile Strength and Durability

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    HDG Grade 5, Grade 8 Carriage Bolts - Square Neck Bolt and Round Head Bolt 13
    product advantages 1
    Our HDG Grade 5 and Grade 8 Carriage Bolts feature a square neck and round head design, ensuring a secure and reliable fastening solution for your projects.
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    product advantages 2
    With hot-dip galvanized coating, these bolts offer enhanced corrosion resistance, making them ideal for outdoor and marine applications.
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    product advantages 3
    The high-quality construction of these bolts guarantees strength and durability, providing peace of mind for all your heavy-duty fastening needs.
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    Superior Strength, Secure Fastening

    Manufactured in compliance with ASME/ANSI B 18.5, DIN603, DIN608 standards, our HDG Grade 5, Grade 8 Carriage Bolts come in sizes ranging from 1/2"-1 1/2", M12-M36 and are available in carbon steel, alloy steel, stainless steel, and brass materials. With thread options including UNC and UNF, and finish options such as plain, zinc plated, black oxide, nickel, and chrome, our carriage bolts are perfect for use in machinery, chemical industry, and other applications. Rest assured of high quality, competitive prices, and timely delivery with our over 10 years of experience in the fasteners industry. With a supply ability of 1000 tons per month, we are dedicated to meeting your needs.

    ◎ Durable

    ◎ Strong

    ◎ Versatile

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    Material Introduction

    Our HDG Grade 5 and Grade 8 Carriage Bolts are manufactured using high-quality carbon steel, alloy steel, stainless steel, or brass. These durable materials ensure the bolts are suitable for use in machinery, chemical industry, environmental applications, building, and highway guardrail hardware. The HDG Grade 5 and Grade 8 Carriage Bolts come in a variety of finishes such as plain, zinc-plated (clear/blue/yellow/black), black oxide, nickel, and chrome, making them versatile for different applications. With the use of top-of-the-line equipment and strict quality control measures, we guarantee high-quality, durable bolts for various industrial and construction needs.


    ◎ Grade 5 Carriage Bolts 

    ◎ Grade 8 Carriage Bolts

    ◎ HDG Square Neck Bolt

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    Application Scenario

    HDG Grade 5, Grade 8 Carriage Bolts - Square Neck Bolt and Round Head Bolt 19
    Solar Energy
    Custom non-standard big round head bolts can be used to secure components in industrial machinery, providing a reliable fastening solution for heavy-duty applications.
    HDG Grade 5, Grade 8 Carriage Bolts - Square Neck Bolt and Round Head Bolt 20
    Oil & Gas
    These bolts are ideal for use in home appliances such as refrigerators, washers, and dryers, ensuring a secure and safe fastening solution for critical components.
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    Railroads
    Manufacturers of HVAC systems can use these custom bolts to secure electrical components and ensure the safety and reliability of their products.
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    Tower & Pole
    These custom non-standard big round head bolts are ideal for use in automotive electronics, providing a secure fastening solution for critical components in vehicles.
    建筑
    Metal Buliding
    木箱
    Wooden box pallet
    室内
    Home Decorating & Furniture
    机械
    Tractor Parts & farmm

    FAQ

    1
    What are HDG Grade 5, Grade 8 Carriage Bolts?
    HDG Grade 5, Grade 8 Carriage Bolts are heavy-duty bolts with a square neck under the head to prevent turning during installation. They are available in both square neck and round head designs.
    2
    What are the differences between Grade 5 and Grade 8 Carriage Bolts?
    Grade 5 carriage bolts are made of medium carbon steel and are commonly used in construction and machinery. Grade 8 carriage bolts are made of alloy steel and are heat-treated for extra strength, making them suitable for heavy-duty applications such as in automotive and aerospace industries.
    3
    What are some common applications for HDG Grade 5, Grade 8 Carriage Bolts?
    These bolts are commonly used in wood-to-wood and wood-to-metal construction, as well as in the assembly of heavy machinery and equipment.
    4
    Can these carriage bolts be used outdoors?
    Yes, the hot-dip galvanized (HDG) coating on these bolts provides corrosion resistance, making them suitable for outdoor and marine applications.
    5
    Are these bolts easy to install?
    Yes, the square neck design of carriage bolts prevents them from turning during installation, making them easier and more secure to install compared to regular bolts.
    6
    Can these bolts be used for structural applications?
    Yes, Grade 5 and Grade 8 carriage bolts are suitable for structural applications where a strong and reliable fastener is required. However, it is important to ensure that the appropriate grade and size are selected for the specific structural requirements.
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    General Manager: Vivi Gao 
    Tel: 0086-18966356433
           0086-18969177261
    Website: www.lewei-hardware.com
    Address: Building 29, No.4567 Hangzhouwan Avenue, Xitangqiao Street, Haiyan County, Zhejiang Province, China
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