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China Suppliers Factory High-Quality Q235 HDG Grade 4.8 8.8 Hex Bolt DIN931 - Standard Sizes Available

Discover a wide range of standard-sized bolts that meet various international specifications, including GB/T5783, GB/T5782, SH/T3404, DIN933, DIN931, ISO4014, ISO4017, and UNI5737/UNI5739. We are one of the leading China suppliers and factory specializing in high-quality bolts that comply with ASME standards such as ASME B18.2.3.1m, ASME B18.2.3.5m, and ASME B18.2.3.6M metric hexagon dimensions. Our products are designed to ensure reliability and durability, making us your trusted partner for bolt solutions.

    Item Value
    Finish Hot dip galvanized
    Material Steel
    Place of Origin China, Hebei
    Brand Name Ruisu
    Model Number M6-M48
    Standard GB DIN
    Product name Hex Bolt
    Grade 4.8/ 8.8/ 10.9/ 12.9 Ect
    Surface treatment HDG
    Size M6-M48
    Length 10mm-300mm
    Delivery time 7-25 Days
    Sample Supplied
    Port Tianjin Port
    Payment Term T/T
    Application Industry
    Standard Dimension Options

    1. Bolt appearance standard size optional: GB/T5783, GB/T5782, SH/T3404, DIN933, DIN931, ISO4014, ISO4017, UNI5737/UNI5739 Italian standard, ASME B18.2.3.1m, ASME B18.2.3.5m, ASME B18.2.3.6M metric outer hexagon, ANSI/ASME B18.2.1 and other standard dimensions.

    2. Nut appearance standard size optional: GB/T6170, GB/T6172, GB/T6175, GB/T9125 (large hexagonal), HG/T20634 (special), HG/T20613 (special), SH/T3404, DIN934, ISO4032, ISO4035, UNI5587 heavy, UNI5588, ANSI(UNC/UNF/UN) American Standard Coarse/fine / 8-tooth permanent teeth, ANSI/ASME B18.2.2 American Heavy, ASME B18.2.1m, ASME B18.2.2m, ASME B18.2.3m, ASME B18.2.4.6m metric hexagon nuts, etc.

    Classification of Hot Dip Galvanized Bolts

    Hot-dip galvanized bolts are divided into ordinary hot-dip galvanized bolts and hot-dip galvanized bolts with reaming. According to the head shape: hexagonal head, round head, square head, sink head. The most common one is the hexagon.

    The head of a hot dip galvanized bolt is usually used where it needs to be joined. It is a non-standard part with a U-shaped shape, so it is also called a U-bolt. Hot dip galvanized bolts with threaded ends can be used in combination with nuts. It is mainly used to fix tubular or sheet objects. It is called a riding pin because of the way it holds things in place, just like riding a horse.

    Steel Structural Connection Bolts & Usage

    For steel structural connection bolts, unless otherwise specified, hot dip galvanized bolts are usually plain class C thick bolts. The rod of class A and B bolts is machined by the lathe, with smooth surface and accurate size. It has a material performance grade of 8.8 and is difficult to manufacture and install and expensive, so it is rarely used. ② Class C bolts are made of unprocessed round steel, the size is not precise enough, and the material performance grade is 4.6 or 4.8. The connection has large deformation, easy installation and low production cost.

    Bolts are essential. Bolts are also known as industrial rice. As you can see, bolts are widely used. The application scope of bolt is: hot dip galvanized bolt, electronic products, mechanical products, digital products, electrical equipment, mechanical and electrical products. Bolts are also used in ships, vehicles, hydraulic engineering, and even chemical experiments.

    Q235 HDG Grade 4hy9
    Q235 HDG Grade 49gn
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    Frequently Asked Questions

    Q: What optional standards are available for the hot dip galvanized bolts?

    The bolt appearance standard sizes can be selected from GB/T5783, GB/T5782, SH/T3404, DIN933, DIN931, ISO4014, ISO4017, UNI5737/UNI5739 Italian standard, ASME B18.2.3.1m, ASME B18.2.3.5m, ASME B18.2.3.6M metric outer hexagon, and ANSI/ASME B18.2.1.

    Q: What standards are supported for matching nuts?

    Optional nut standards include GB/T6170, GB/T6172, GB/T6175, GB/T9125 (large hexagonal), HG/T20634 (special), HG/T20613 (special), SH/T3404, DIN934, ISO4032, ISO4035, UNI5587 heavy, UNI5588, ANSI(UNC/UNF/UN) American Standard Coarse/fine/8-tooth permanent teeth, ANSI/ASME B18.2.2 American Heavy, ASME B18.2.1m, ASME B18.2.2m, ASME B18.2.3m, and ASME B18.2.4.6m metric hexagon nuts.

    Q: How are hot dip galvanized bolts classified by head shape?

    They are classified into hexagonal head, round head, square head, and sink head. The hexagonal head shape is the most commonly used classification.

    Q: What is a U-bolt and how is it used?

    A U-bolt is a non-standard hot dip galvanized bolt with a U-shaped body. It features threaded ends to be used in combination with nuts, primarily for fixing tubular or sheet objects. It is also known as a riding pin.

    Q: What is the difference between Class A/B and Class C steel structural connection bolts?

    Class A and B bolts are lathe-machined with smooth surfaces, precise sizes, and a material grade of 8.8, but they are expensive and rarely used. Class C bolts are made of unprocessed round steel with a material grade of 4.6 or 4.8, offering easier installation and lower production costs.

    Q: What are the typical applications of these bolts?

    They are widely applied in electronic products, mechanical products, digital products, electrical equipment, mechanical and electrical products, ships, vehicles, hydraulic engineering, and chemical experiments.