Premium 22mm Hex Bolt: High-Strength Fastening for Demanding Industrial Applications
In the world of heavy machinery, structural engineering, and large-scale fabrication, the integrity of every connection is paramount. Our 22mm hex bolt is engineered to meet the rigorous demands of these applications, providing a reliable, high-strength fastening solution. Designed for professionals who cannot compromise on safety or performance, this bolt offers superior tensile strength, excellent corrosion resistance, and dependable performance under extreme stress and environmental conditions. As a cornerstone component in critical assemblies, the right 22mm hex bolt ensures longevity, safety, and operational efficiency.
Product Overview
Our 22mm hex bolt is a heavy-duty fastener characterized by its large hexagonal head, which allows for high-torque application with standard wrenches. It is manufactured from high-grade materials and undergoes stringent quality control processes to ensure it meets international standards for dimensional accuracy and mechanical properties. This bolt is specifically designed for applications requiring a robust connection with a nominal diameter of 22 millimeters, making it ideal for flanges, structural steelwork, heavy equipment assembly, and other high-load scenarios. We offer a range of grades, finishes, and thread lengths to suit diverse project specifications.
Key Features
- Exceptional Tensile Strength: Available in high-grade classifications such as Grade 8.8, 10.9, and A325, providing superior load-bearing capacity and resistance to shear and tensile forces.
- Precision Engineering: Manufactured to exacting tolerances (ISO 898-1, ASTM A325) ensuring consistent thread pitch, shank diameter, and head dimensions for a perfect fit.
- Enhanced Durability: Optional protective coatings including hot-dip galvanizing, zinc plating, and geomet coatings offer excellent corrosion resistance for use in harsh outdoor or chemical environments.
- Optimized Head Design: The full hexagon head provides a large bearing surface and wrench flats, enabling secure tool engagement and preventing rounding during high-torque installation.
- Versatile Compatibility: Pairs seamlessly with standard 22mm hex nuts and washers, simplifying the procurement and assembly process for large-scale projects.
Technical Specifications
| Parameter | Specification | Standard / Grade |
|---|---|---|
| Nominal Diameter (d) | 22 mm | M22 |
| Thread Pitch | Standard: 2.5 mm | Fine: 1.5 mm (available) | ISO Metric Coarse / Fine |
| Common Lengths (L) | 40mm - 300mm (Custom lengths available) | - |
| Head Style | Hexagon (Hex) | ISO 4014 / 4017, DIN 933 / 931 |
| Material | Medium Carbon Steel, Alloy Steel | - |
| Strength Grade | 8.8, 10.9, A325 (Equivalent) | ISO 898-1, ASTM A325 |
| Surface Finish | Plain, Zinc Plated, Hot-Dip Galvanized, Geomet® | - |
| Proof Load / Tensile Strength | e.g., Grade 10.9: Min. 830 MPa Tensile | Varies by grade |
Application Scenarios
The 22mm hex bolt is a fundamental component in industries where structural integrity is non-negotiable. Its primary applications include:
- Construction & Structural Steel: Connecting steel beams, columns, and trusses in bridges, commercial buildings, and industrial facilities.
- Heavy Machinery & Equipment: Assembly of mining equipment, agricultural machinery, crushers, and presses where joints undergo constant vibration and dynamic loads.
- Wind Energy: Used in tower flange connections and component assembly, requiring exceptional fatigue resistance.
- Transportation Infrastructure: Fastening components in rail tracks, cargo containers, and heavy-duty truck frames.
- Industrial Fabrication: Securing large plates, pressure vessel flanges, and heavy-duty brackets in manufacturing plants.
Advantages
Choosing our 22mm hex bolt translates into tangible benefits for your project and bottom line:
- Uncompromised Safety: High-grade materials and certified manufacturing processes ensure each bolt performs reliably under its rated load, reducing the risk of joint failure.
- Reduced Maintenance & Downtime: Corrosion-resistant finishes extend service life, minimizing the frequency of inspections and replacements in challenging environments.
- Streamlined Procurement: Consistent quality and availability in bulk quantities ensure your projects stay on schedule without delays for fastener sourcing.
- Cost-Effectiveness: The durability and longevity of a premium 22mm hex bolt lower the total cost of ownership by reducing long-term replacement and labor costs.
- Global Compliance: Products are manufactured to meet or exceed recognized international standards, ensuring acceptance in global markets.
Why Choose Us
As a specialist supplier in industrial fasteners, we distinguish ourselves through a commitment to quality, service, and expertise that our B2B clients rely on.
- Deep Technical Expertise: Our team provides more than just products; we offer technical support to help you select the correct grade, coating, and specification for your specific application.
- Rigorous Quality Assurance: Every batch undergoes dimensional checks, mechanical property testing, and coating thickness verification. Certificates of Compliance (CoC) and mill test reports are available.
- Scalable Supply Chain: We maintain significant inventory of standard 22mm hex bolts and have the capacity for large custom orders, ensuring reliable and timely delivery.
- Competitive B2B Pricing: Our efficient operations and direct manufacturer relationships allow us to offer highly competitive pricing for bulk orders without sacrificing quality.
- Dedicated Customer Service: You are assigned a dedicated account manager to handle inquiries, quotes, and logistics, providing a seamless and professional procurement experience.
FAQ
What is the difference between Grade 8.8 and 10.9 for a 22mm hex bolt?
Grade 8.8 is a medium-strength carbon steel bolt with a tensile strength of approximately 800 MPa, suitable for general structural applications. Grade 10.9 is a high-strength alloy steel bolt with a tensile strength of approximately 1000 MPa, designed for critical, high-stress applications like dynamic machinery or structural connections requiring higher clamp force and fatigue resistance.
Can you provide 22mm hex bolts with specific thread lengths or custom markings?
Yes, we specialize in providing customized solutions. We can manufacture 22mm hex bolts to non-standard lengths and can apply head markings (grade identification, manufacturer's logo) according to your specifications. Please contact our sales team with your detailed requirements for a quote.
Which coating is best for outdoor marine environments?
For highly corrosive environments like marine or offshore applications, we recommend hot-dip galvanizing (HDG) or a specialized coating like Geomet®. HDG provides a thick, sacrificial zinc layer, while Geomet offers a thin-film, lubricated coating with exceptional corrosion resistance without hydrogen embrittlement risk.
What is the proper torque specification for tightening a Grade 10.9 M22 bolt?
The correct torque depends on the bolt grade, lubrication (coating), and intended use (friction-grip vs. bearing). As a general reference, a lubricated Grade 10.9 M22 bolt might require a torque of approximately 820-950 Nm. However, for critical joints, always follow the torque specifications provided by the project engineer or relevant design code, as preload is crucial for joint integrity.
Do you offer packaging suitable for international export?
Absolutely. We offer robust, export-ready packaging including sturdy carton boxes, wooden pallets, and waterproof wrapping to ensure our 22mm hex bolts arrive at your destination in perfect condition. All packaging can be labeled according to your shipping and identification requirements.
