| Fastener Series: |
| Hexagon Expansion Bolt, |
| Grade 12.9 External Hexagon Bolt, |
| Internal Hexagon Bolt, |
| Double-Head Bolt, |
| Grade 8.8 Bolt, |
| Stainless Steel Bolt, |
| Steel Structure Large Hexagon Bolt, |
| Twist-Shear Bolt, |
| Screw Rod. |
Fastener Series – Industrial Bolts and Construction Fasteners
High Strength Fasteners for Construction and Industrial Applications
Fasteners are essential components used in construction, steel structures, machinery manufacturing and industrial assembly. High-quality bolts and fastening systems ensure structural safety, durability and reliable mechanical performance.
Shaanxi Gold-Stone I/E Co., Ltd. supplies a complete range of industrial fasteners including high-strength bolts, expansion bolts, stainless steel bolts and structural bolts for global engineering and construction projects.
Our fasteners are widely used in steel structures, mechanical equipment, infrastructure construction and industrial installations.
Fastener Product Range
We supply a wide variety of bolts and fastening products including:
• Hexagon Expansion Bolt
• Grade 12.9 External Hexagon Bolt
• Internal Hexagon Bolt
• Double-Head Bolt
• Grade 8.8 Bolt
• Stainless Steel Bolt
• Steel Structure Large Hexagon Bolt
• Twist-Shear Bolt
• Screw Rod (Threaded Rod)
These fasteners are designed for high-strength structural connections and heavy-duty industrial applications.
Technical Specifications
| Item | Specification |
|---|---|
| Product Category | Industrial Fasteners |
| Bolt Grades | 8.8 / 10.9 / 12.9 |
| Materials | Carbon Steel / Alloy Steel / Stainless Steel |
| Surface Treatment | Black Oxide / Galvanized / Hot Dip Galvanized |
| Thread Type | Metric / UNC / UNF |
| Size Range | M6 – M64 |
Fastener Materials
Fasteners can be manufactured from various materials depending on the application environment.
Carbon Steel
Common grades include:
• Grade 8.8
• Grade 10.9
• Grade 12.9
These grades provide high tensile strength and are widely used in structural engineering.
Stainless Steel
Available stainless steel grades include:
• 304
• 304L
• 316
• 316L
Stainless steel fasteners provide excellent corrosion resistance and are suitable for marine and chemical environments.
Surface Treatment
Different coatings are available to improve corrosion resistance and durability.
• Black oxide coating
• Zinc plated
• Hot dip galvanized
• Dacromet coating
Applications
Fasteners supplied by Shaanxi Gold-Stone I/E Co., Ltd. are widely used in:
Steel Structure Construction
High-strength bolts for structural connections.
Machinery Manufacturing
Fasteners used in industrial equipment assembly.
Infrastructure Projects
Bridges, highways and building construction.
Energy Industry
Wind power equipment and industrial installations.
Advantages of Our Fasteners
High Strength
Manufactured with high-grade materials for strong load capacity.
Precision Manufacturing
Strict dimensional tolerances ensure reliable connections.
Corrosion Resistance
Multiple surface treatments available for different environments.
Wide Product Range
Suitable for construction, mechanical and industrial applications.
FAQ
What is the difference between Grade 8.8 and Grade 12.9 bolts?
Grade 12.9 bolts have significantly higher tensile strength than Grade 8.8 bolts and are used in heavy-duty structural or mechanical applications.
What are twist-shear bolts used for?
Twist-shear bolts are commonly used in steel structure construction because they allow precise torque control during installation.
What is the advantage of stainless steel bolts?
Stainless steel bolts offer excellent corrosion resistance and are ideal for marine, chemical and outdoor environments.