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High-Strength 13mm Hex Head Bolt for Demanding Industrial Applications

In the world of heavy-duty assembly and construction, the integrity of every connection is paramount. Our 13mm hex head bolt is engineered to meet the rigorous demands of professional applications where reliability, strength, and durability are non-negotiable. Designed for use in machinery, structural frameworks, and critical infrastructure, this bolt provides a robust and secure fastening solution that professionals can trust. Manufactured to exacting international standards, it represents the cornerstone of safe and long-lasting assemblies.

Product Overview

Our 13mm hex head bolt is a premium-grade fastener characterized by its standard hexagon head, which allows for high-torque application with common wrenches and sockets. The "13mm" designation refers to the thread diameter (M13), making it a versatile mid-range size suitable for a vast array of industrial and construction tasks. These bolts are typically supplied with full or partial threading, catering to specific joint requirements. Built from high-quality materials and finished with protective coatings, they offer exceptional resistance to shear, tension, and vibrational loosening, ensuring a permanent and secure hold in the most challenging environments.

Key Features

  • Superior Material Strength: Fabricated from high-grade steel, often Grade 8.8 or higher, ensuring excellent tensile strength and yield point for heavy-load applications.
  • Precision Engineering: Threads are rolled, not cut, for enhanced strength, smoother engagement, and reduced risk of cross-threading.
  • Corrosion Resistance: Available with various finishes such as hot-dip galvanizing, zinc plating, or dichromate coating to withstand harsh environmental conditions.
  • High-Torque Capability: The hexagonal head design provides ample contact surfaces for wrenches, enabling secure tightening to precise torque specifications.
  • Consistent Quality: Each batch undergoes rigorous quality control, ensuring dimensional accuracy and mechanical property consistency for reliable performance.

Technical Specifications

Parameter Specification Standard / Notes
Thread Diameter (d) 13 mm Metric Coarse (M13) standard. Fine thread available on request.
Pitch (Standard) 1.75 mm ISO 261 / ISO 262
Common Lengths (L) 20mm - 200mm Custom lengths available for bulk orders.
Head Style Hexagon Width Across Flats: 19 mm (Standard). Height: 8.1 mm.
Property Class / Grade 8.8, 10.9, A2-70, A4-80 Grade 8.8 (Medium Carbon Steel, Quenched & Tempered). 10.9 (High Strength). A2/A4 (Stainless Steel).
Tensile Strength 800 MPa (Grade 8.8) Minimum ultimate tensile strength for Grade 8.8.
Finish Zinc Plated, HDG, Black Oxide, Plain Hot-Dip Galvanized (HDG) offers superior corrosion protection.
Standards Compliance ISO 4014, ISO 4017, DIN 933, DIN 931, ASME B18.2.3.1M Fully compliant with major international standards.

13mm hex head bolt

Application Scenarios

The versatility and strength of the 13mm hex head bolt make it indispensable across numerous sectors. In heavy machinery and equipment manufacturing, it is used to assemble frames, engines, and hydraulic components. The construction industry relies on it for structural steelwork, connecting beams, bracings, and supports in buildings and bridges. Within transportation and automotive, it secures chassis parts, suspension systems, and truck bodies. Furthermore, it is critical in renewable energy infrastructure (wind turbine assembly), material handling systems (conveyor belts), and industrial plant maintenance. Its design is ideal for applications requiring a non-slip grip for high-torque tightening and easy maintenance access.

Advantages

  • Optimal Strength-to-Size Ratio: The M13 diameter offers an ideal balance between high clamping force and practical size for a wide range of industrial applications.
  • Enhanced Safety: Manufactured to strict quality protocols, these bolts minimize the risk of joint failure, protecting both equipment and personnel.
  • Long Service Life: High-quality materials and protective finishes combat wear, fatigue, and corrosion, reducing replacement frequency and total cost of ownership.
  • Global Compatibility: Conformance to ISO, DIN, and ASME standards ensures they are suitable for use in projects and machinery worldwide.
  • Ease of Installation & Maintenance: The ubiquitous hex head design allows for quick installation and disassembly with standard tools, streamlining assembly lines and field service.

Why Choose Us

Selecting the right supplier for critical components like a 13mm hex head bolt is as important as the product itself. We distinguish ourselves through an unwavering commitment to quality, reliability, and customer partnership. Our state-of-the-art manufacturing facilities utilize advanced technology to produce fasteners with exceptional consistency. Every shipment is backed by full material traceability and certification. We offer flexible logistics solutions, from small pallet orders to full-container loads, with a global distribution network ensuring timely delivery. Our technical support team is available to assist with specification selection, ensuring you get the exact bolt—with the right grade, finish, and dimensions—for your specific application challenge.

FAQ

What is the difference between a Grade 8.8 and a Grade 10.9 13mm hex head bolt?

Grade 8.8 bolts have a minimum tensile strength of 800 MPa and are suitable for most general heavy-duty applications. Grade 10.9 bolts are high-strength, with a minimum tensile strength of 1000 MPa, and are used in more critical, high-stress applications like automotive or dynamic load-bearing structures. The choice depends on your project's specific engineering requirements.

Can you provide 13mm hex head bolts

Absolutely. For highly corrosive environments like marine or chemical processing, we recommend our A4-80 (316 stainless steel) bolts or carbon steel bolts with a thick hot-dip galvanized (HDG) finish. We can advise on the most cost-effective and durable solution for your exposure conditions.

Do you offer custom packaging or labeling for large OEM orders?

Yes, we specialize in serving OEM clients. We can provide custom packaging, kitting, barcode labeling, and just-in-time (JIT) delivery schedules to integrate seamlessly into your production process. Contact our sales team to discuss your specific supply chain needs.

What are the standard packaging quantities?

Our standard packaging is in sturdy carton boxes, typically in quantities of 100 or 200 pieces per box, palletized for bulk orders. We also offer bulk poly bags or drums for very high-volume purchases. Smaller sample quantities are available for testing and qualification purposes.

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