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Hex Bolts
Name: Hex Bolts
Brand: Promisteel
Size range: M8 - M100
Length: 10mm -500mm
Thread types: full and half threads, under ISO standards.
Material: Carbon steel, stainless steel, alloy steel, etc. to ensure the mechanical properties and durability of the product.
Surface treatment: hot dip galvanized, electro galvanized, blackened, Dacromet, etc. Various anti-corrosion therapies are available.
Brand: Promisteel
Size range: M8 - M100
Length: 10mm -500mm
Thread types: full and half threads, under ISO standards.
Material: Carbon steel, stainless steel, alloy steel, etc. to ensure the mechanical properties and durability of the product.
Surface treatment: hot dip galvanized, electro galvanized, blackened, Dacromet, etc. Various anti-corrosion therapies are available.
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Product Introduction
High-quality hexagonal bolts - ideal for steel structure projects
We specialize in exporting high-quality Hexagonal Bolts and are committed to providing reliable connection solutions for steel fabricators and installers worldwide. We can supply different kinds of fasteners with different specifications.
Product Overview
Hex bolts are a type of bolt, a fastener used to hold objects together. Unlike screws, bolts require nuts or threaded holes to function. The main components of a bolt include the head, shank, and threads. The design and size of these components determine the suitability of the bolt for a particular application. Because the head of the bolt is a 6-sided design, it is handed over to a hexagonal bolt.
Hexagonal bolts are a kind of common fasteners, which are widely used in machinery, construction, and other fields. Its classification, specification, size, and grade are as follows:
Classification
| Classification Typology Descriptions | Type | Descriptions |
| By thread type | coarse thread | Larger pitch, suitable for quick connection, commonly used in wood, plastic, and other soft materials. |
| fine thread | Smaller pitch, suitable for precision connections, with better resistance to loosening, commonly used for metal materials. | |
| By Material | Carbon steel hexagon bolts | Commonly used in general environments with good mechanical properties. |
| Stainless steel hexagonal bolts | Excellent corrosion resistance for use in wet or corrosive environments. | |
| Alloy steel hexagon bolts | With higher strength and wear resistance, it is suitable for applications with high strength requirements. | |
| By Surface Finish | Hot-dip galvanized hexagonal bolts | The surface is plated with a layer of zinc, which provides good corrosion resistance. |
| Black hexagon bolts | Unsurfaced and suitable for indoor environments. | |
| Nickel-plated hexagon bolts | The surface is plated with a layer of nickel for good corrosion resistance and aesthetics. |
dimensions
| Nominal Diameter (M) | Pitch (P) | Distance to edge (mm) | Common length (mm) |
| M3 | 0.5mm | 5.5mm | 10, 20, 30, 40, 50, 60, 70, 80, 90, 100
|
| M4 | 0.7mm | 7mm | |
| M5 | 0.8mm | 8mm | |
| M6 | 1.0mm | 10mm | |
| M8 | 1.25mm | 13mm | |
| M10 | 1.5mm | 16mm | |
| M12 | 1.75mm | 18mm | |
| M14 | 2.0mm | 21mm | |
| M16 | 2.0mm | 24mm |
Grades
| Grade | Tensile strength (MPa) | Yield strength (MPa) | Applications |
| 4.8 | 400 | 320 | Household appliances, furniture, light machinery |
| 5.8 | 500 | 400 | General mechanical equipment, vehicle interior parts, etc. |
| 6.8 | 600 | 480 | Medium-sized mechanical equipment, secondary joints in building structures, etc. |
| 8.8 | 800 | 640 | Steel structure engineering, heavy machinery, automotive chassis |
| 10.9 | 1000 | 900 | Large construction machinery, bridges, high-speed trains and other critical parts |
| 12.9 | 1200 | 1080 | High voltage equipment, aerospace field, etc. |
Advantage
High Strength: High-quality materials and a strict heat treatment process ensure that the bolts have excellent tensile and shear strength.
Corrosion resistance: Various surface treatment methods enhance the product's corrosion resistance in harsh environments and prolong the service life.
Precision Manufacturing: Advanced production equipment and processes ensure bolt dimensional accuracy and thread finish for smoother installation.
International certification: The products meet international standards such as ISO, DIN, ANSI, etc. The quality is reliable and trustworthy.
application
Our hexagonal bolts are widely used in the following areas:
Steel structure building: such as factory buildings, bridges, high-rise buildings, etc., is the main structure of the connection.Machinery and equipment: Assembly and fixing of all types of heavy machinery and equipment.Energy facilities: Installation of new energy equipment such as wind power and photovoltaics.Transport facilities: Railways, roads, airports and other infrastructure development.
quality control
We know that quality is the life of an enterprise. From raw material procurement to manufacturing to finished product inspection, every link is strictly controlled to ensure that every bolt meets the high standard requirements. Our quality management system has passed ISO 9001 certification, and our products are exported to Europe, America, Africa, Southeast Asia, the Middle East and other regions, and are well received by customers.
Figure: 8.8-grade hot dip galvanized bolt hardness test
Packages
1. Packaging Materials:
Primary Containers: Utilize sturdy corrugated cartons or metal boxes to house the bolts and nuts, ensuring they are robust enough to withstand handling and transportation stresses.
Secondary Packaging: Employ wooden crates or pallets for consolidating multiple primary containers, providing added protection and facilitating easier handling.
2. Fastening and Sealing:
Securing Hardware: Ensure that bolts, nuts, and washers are securely fastened within their containers to prevent movement. This may involve using internal dividers or compartments.
Sealing Methods: Use high-quality sealing materials such as industrial-grade tape or metal/plastic banding to secure the packages, preventing accidental openings.
3. Moisture and Corrosion Protection:Waterproofing: Incorporate waterproofing measures, such as lining containers with moisture-resistant materials or using desiccants, to protect metal components from corrosion.
Exterior Protection: For wooden crates, consider adding an asphalt lining or roofing felt to the exterior top panel to prevent water ingress and create degradation.
4. Labeling and Marking:Identification Labels: Clearly label each package with details including part numbers, quantities, and destination addresses to facilitate efficient handling and inventory management.
Handling Instructions: Affix labels indicating handling precautions, such as "Fragile," "Keep Dry," or "This Side Up," to inform carriers of special requirements.
5. Compliance with International Standards:
Regulatory Adherence: Ensure all packaging materials and methods comply with international shipping standards and regulations, such as those outlined in the National Motor Freight Classification (NMFC) for damage-free shipping.
Wood Treatment: If using wooden packaging, ensure the wood is treated and certified according to international phytosanitary standards to prevent pest infestations.
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