DIN 6914 Large Hex Head Structural Bolt | Grade 8.8 10.9 | HDG / Black / Zinc

1. Product Overview

We are pleased to announce the official launch of DIN 6914 large hex head high-strength structural bolts at Ningbo Gangtong Zheli Fasteners. DIN 6914 is a standard dedicated to steel structure connections, featuring a large-width hex head for higher torque and better load distribution. It is widely used in steel construction, bridges, machinery, and engineering projects requiring heavy-duty connections.

This new product is fully compliant with DIN 6914, EN 14399, and ISO 898-1, providing customers with a reliable, standardized, and high-performance fastening solution.

2. Core Features of DIN 6914 Bolts

Large hex head design: Wider contact area, prevents embedment, suitable for high-load structures

High-strength performance: Main grades 8.8 and 10.9, quenched and tempered for stable mechanical properties

Precise threading: Metric coarse thread, good fit with DIN 6915 nuts and DIN 6916 washers

Complete specifications: Diameters from M12 to M36, lengths customizable

Multiple surface treatments: Black oxide, electro zinc, hot-dip galvanizing (HDG), mechanical zinc

3. Grade & Material Specification Table

4. Matching Assembly System

DIN 6914 bolts form a complete structural bolting assembly with matching standard parts:

DIN 6914 bolt + DIN 6915 heavy hex nut + DIN 6916 hardened washer

Fully compliant with European structural standards, suitable for engineering inspection and approval

Stable clamping force, excellent anti-loosening performance

5. Main Application Scenarios

Steel structure buildings and industrial workshops

Bridge bearings, seismic support systems

Heavy machinery and equipment bases

Highway guardrails and infrastructure facilities

Wind turbine towers and pipe supports

6. Why Choose GTZL DIN 6914 Bolts?

Established in 2001, professional structural fastener manufacturer

15,000 ㎡ production base, monthly capacity 2,000 tons

Full-process quality control: raw material inspection, heat treatment, hardness test, tensile test

Support OEM/ODM, customizable sizes, lengths, and coatings

Exported to Europe, North America, Australia, Southeast Asia, and the Middle East

Quick response within 24 hours and stable on-time delivery

7. Conclusion

The launch of DIN 6914 large hex head structural bolts further enriches our high-strength fastener portfolio and enhances our one-stop solution capability for global structural projects. GTZL will continue to focus on quality and standardization, providing safer and more reliable fastening products for engineering construction worldwide.