M10x1.25 Flanged Hex Bolts DIN6921

Ti-6Al-4V Grade 5 Titanium flange bolts compliant with the DIN 6921 standard integrate the exceptional properties of titanium alloys with the rigorous dimensional and performance specifications of this German industrial norm, making them ideal for high-demand applications across industries like aerospace, marine engineering, and chemical processing.

First, in terms of material performance, titanium alloys (typically grades such as Ti-6Al-4V) endow these bolts with outstanding corrosion resistance. Unlike carbon steel or even stainless steel bolts, they resist degradation in aggressive environments—including seawater, acidic/alkaline solutions, and high-humidity settings—without requiring additional coatings, ensuring long-term structural integrity and reducing maintenance costs.

Second, DIN 6921 defines precise dimensional parameters for the flange design: the flange (a widened, disc-like head) provides a larger bearing surface, distributing clamping force evenly across the connected flange components. This minimizes pressure points on fragile or thin-walled materials, preventing deformation while enhancing joint stability. The standard also specifies hexagon head dimensions for compatibility with common wrenches, ensuring easy installation and torque application.

Additionally, titanium alloys offer an excellent strength-to-weight ratio. Compared to stainless steel bolts of the same size, DIN 6921 titanium alloy flange bolts are approximately 40% lighter, a critical advantage in weight-sensitive applications like aircraft fuselages or marine vessels, where reducing overall mass improves energy efficiency and operational performance.

Lastly, the standard mandates strict quality controls, including tensile strength, yield strength, and dimensional tolerance tests. This ensures consistent performance across batches, with titanium alloy variants typically meeting tensile strength requirements of 860 MPa or higher—surpassing many stainless steel grades—while maintaining good ductility to resist breakage under dynamic loads.

In summary, these bolts combine DIN 6921’s engineering precision with titanium alloy’s material superiority, delivering reliability, durability, and efficiency in challenging operational conditions.