High-Strength 14 mm Hex Bolt for Demanding Industrial Applications
In the world of heavy-duty assembly and construction, the integrity of every connection is paramount. Our 14 mm hex bolt is engineered to meet the rigorous demands of industrial and commercial projects where reliability cannot be compromised. Designed with precision and manufactured from high-grade materials, this bolt provides a robust, secure fastening solution for critical structural and mechanical applications. It represents the optimal balance of tensile strength, corrosion resistance, and dimensional accuracy required by professionals in sectors ranging from infrastructure to heavy machinery.
Product Overview
Our 14 mm hex bolt is a cornerstone component for professionals seeking a dependable, high-performance fastener. Characterized by its standard hexagonal head for easy application with common wrenches and sockets, this bolt is available in a variety of grades, finishes, and thread lengths to suit specific project requirements. Whether you are securing steel beams, assembling large-scale equipment, or performing maintenance on industrial assets, this bolt delivers consistent performance. We ensure every batch meets stringent international standards, providing peace of mind and reducing the risk of fastener failure on site.
Key Features
- Superior Material Integrity: Fabricated from alloy steel or stainless steel, offering high tensile strength and excellent yield points.
- Precision Engineering: Consistent thread pitch and shank diameter ensure perfect fit and optimal clamping force.
- Enhanced Durability: Available with protective finishes such as hot-dip galvanizing or zinc plating for superior corrosion resistance in harsh environments.
- Wide Compatibility: Designed to pair seamlessly with standard 14 mm hex nuts and washers, simplifying procurement and assembly processes.
- Rigorous Quality Control: Each bolt undergoes thorough inspection for dimensional accuracy, thread integrity, and surface defects.
Technical Specifications
| Parameter | Specification | Details / Options |
|---|---|---|
| Nominal Diameter (d) | 14 mm | M14 Standard Metric Thread |
| Thread Pitch | 2.0 mm (Standard) | Coarse thread; Fine thread available on request |
| Head Style | Hexagon | Across Flats: 21 mm (Standard) |
| Common Lengths (L) | 20 mm - 300 mm | Custom lengths available for bulk orders |
| Material Grade | Grade 8.8, 10.9, A4-70, A4-80 | Alloy Steel (8.8/10.9) & Stainless Steel (A4) |
| Surface Finish | Plain, Zinc-Plated, Hot-Dip Galvanized | Other finishes like Dacromet available |
| Standards | ISO 4014, ISO 4017, DIN 933, DIN 931 | Compliant with ASTM, ASME, and other international norms |
Application Scenarios
The versatility and strength of the 14 mm hex bolt make it indispensable across a broad spectrum of industries. Its primary role is in creating high-strength, non-permanent connections that can withstand significant shear and tensile forces.
- Structural Steel Construction: Connecting steel I-beams, channels, and plates in building frames, bridges, and transmission towers.
- Heavy Machinery & Equipment: Assembly of mining equipment, agricultural machinery, presses, and conveyor systems.
- Transportation & Automotive: Used in truck chassis, trailer assembly, and railcar components where vibration resistance is critical.
- Infrastructure & Utilities: Securing components in power generation plants, wind turbine bases, and water treatment facilities.
- Industrial Maintenance & Repair (MRO): A vital spare part for the upkeep and repair of existing industrial installations.
Advantages
Choosing our 14 mm hex bolt translates into tangible benefits for your project's timeline, budget, and long-term reliability.
- Optimized Load Distribution: The hex head design allows for high torque application, ensuring even load distribution and a secure, vibration-resistant joint.
- Long-Term Cost Efficiency: High-grade materials and corrosion-resistant finishes extend service life, reducing the frequency and cost of replacements and maintenance.
- Streamlined Procurement: Consistent availability in standard and custom specifications simplifies inventory management for contractors and distributors.
- Enhanced Safety: Manufactured to precise grade specifications, providing guaranteed mechanical properties that contribute to overall structural safety.
- Global Compliance: Our products are manufactured to meet or exceed major international standards, ensuring acceptance in global markets.
Why Choose Us
As a specialist supplier in the industrial fastener sector, we differentiate ourselves through an unwavering commitment to quality, service, and technical expertise.
- Deep Industry Expertise: We understand the critical nature of fasteners in your projects and provide technical support for material and specification selection.
- Robust Supply Chain: Our efficient logistics network ensures reliable, on-time delivery for both standard stock and large-volume custom orders.
- Comprehensive Quality Assurance: From raw material sourcing to final inspection, our multi-stage QC process is documented and traceable.
- Customer-Centric Solutions: We offer flexible packaging, labeling, and bundling options to fit your operational needs, along with competitive pricing for B2B partners.
- Proven Track Record: We are a trusted supplier to OEMs, construction firms, and distributors worldwide, building relationships on consistency and reliability.
Frequently Asked Questions (FAQ)
What is the difference between Grade 8.8 and 10.9 for a 14 mm hex bolt?
Grade 8.8 is a medium-strength carbon steel bolt with a tensile strength of 800 MPa and a yield strength of 640 MPa. Grade 10.9 is a high-strength alloy steel bolt with a tensile strength of 1000 MPa and a yield strength of 900 MPa. Choose 10.9 for applications with higher load and stress requirements.
Can I get a 14 mm hex bolt with a corrosion-resistant finish for outdoor use?
Absolutely. For outdoor or corrosive environments (e.g., marine, chemical), we recommend our hot-dip galvanized (HDG) or A4/A2 stainless steel variants. HDG provides a thick, sacrificial zinc coating, while stainless steel offers excellent all-around corrosion resistance.
Do you offer partial threading or full threading on these bolts?
We supply both styles. Partially threaded bolts (e.g., DIN 931) have an unthreaded shank under the head, which is stronger in shear. Fully threaded bolts (e.g., DIN 933) are threaded along the entire length, useful where adjustment or a nut is needed along any point. Specify your requirement when ordering.
What is the standard packaging for bulk orders?
Standard bulk packaging is in sturdy, sealed cartons or boxes, with inner plastic bags for moisture protection. We can also accommodate specific packaging requests such as master cartons with individual smaller boxes, poly bags on rolls, or palletized shipments for large volumes.
How do I determine the correct length of a 14 mm hex bolt for my application?
The ideal length is calculated so that the bolt's threaded portion fully engages the nut (at least one diameter length of threads) and protrudes slightly (1-2 threads). The formula generally is: Bolt Length = Material Thickness + Washer Thickness + Nut Height + Allowance for Protrusion. Our technical team can assist with this calculation.

