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China Suppliers Titanium Flanged Concave Hex Head Bolts Factory for Motorcycles & Performance Vehicles
Key Features
● Reduced Unsprung Mass
The titanium flanged concave hex head bolts feature a sculpted concave head profile that removes excess material while preserving strength. This carefully balanced geometry helps reduce the unsprung weight in motorcycles and sports vehicles, improving suspension response and cornering stability.
● Torque-Stable Concave Head
The integrated head and flange design of each titanium flanged concave hex head bolt ensures even torque transfer across the contact area, minimizing stress concentration and maintaining fastening stability under vibration or repeated dynamic loads.
● Aerodynamic & Flush Fit
The curved head fits smoothly against fairings, calipers, and body panels, providing both aerodynamic efficiency and a refined appearance. Ideal for custom motorcycles and high-performance modifications.
● CNC Precision Threads
Every bolt surface and thread is CNC-machined with rolled threading for superior fatigue resistance, tight tolerance, and uniform preload retention. These qualities make the bolt reliable across multiple installation cycles.
● Custom Finish & Branding
Available in anodized rainbow, blue, black, or gold finishes, the titanium flanged concave hex head bolt offers lasting corrosion protection with a premium appearance. Optional PVD coating and laser engraving support OEM branding or personalized customization.
Installation & Maintenance Guidance
- Apply a high-quality anti-seize compound when connecting titanium to titanium or titanium to aluminum to prevent galling.
- Torque bolts to specification using a calibrated wrench; over-torquing can deform the concave head.
- Inspect fasteners periodically after high-stress or track use to maintain clamping reliability.
Technical Specifications
1. Material & Mechanical Properties
| Parameter | Details |
| Material | Grade 5 Titanium (Ti-6Al-4V) |
| Density | 4.43 g/cm³ (≈55% lighter than steel) |
| Tensile Strength | ≥ 900 MPa |
| Yield Strength | ≥ 830 MPa |
| Hardness | 34–36 HRC |
| Fatigue & Shear | High resistance under vibration and cyclic load |
| Corrosion Resistance | Resistant to salt, moisture, and road chemicals |
| Standards Compliance | ISO 4162 / DIN 6921 |
2. Dimensional & Thread Data
| Parameter | Details |
| Diameter Range | M6–M10 |
| Length Range | 15–45 mm |
| Thread Pitch | 1.0–1.5 mm |
| Thread Type | Metric Coarse / Fine |
| Drive Type | Concave Hex |
| Tolerance | ±0.05 mm |
| Head Dimensions | Flanged, CNC curved – refer to table upon request |
3. Finishing & Customization Options
| Parameter | Details |
| Surface Finish | Natural / Anodized / PVD Coating |
| Color Options | Rainbow / Blue / Black / Gold |
| Logo Engraving | Available |
| Packaging | Bulk cartons / Custom retail sets |
| OEM Customization | Supported (thread type, head style, finish, length) |
Application Scenarios
● Motorcycle Assembly & Performance Upgrades
Commonly used in fairings, brake discs, and frame panels（M6–M8 × 20–35 mm）. Titanium flanged concave hex head bolts combine strength and precision. Their concave head ensures smooth aerodynamics and refined visual appeal in motorcycle customization.
● Automotive Lightweight & Tuning Applications
Applied to lightweight body panels, undercarriage protection, and engine bay parts（M6–M10 × 15–40 mm）, these bolts reduce overall mass while maintaining reliable fastening under high vibration and dynamic loads.
● High-End Bicycle & E-Bike Components
Perfect for handlebar clamps, disc mounts, and frame joints（M5–M6 × 15–25 mm）. titanium flanged concave hex head bolts offer excellent weight balance, corrosion resistance, and long-term durability for riders seeking both performance and aesthetics.
● Precision Equipment & Lightweight Machinery
Used in robotic arms, instrument frames, and lightweight machinery structures（M6–M10 × 20–50 mm）, these bolts deliver firm clamping with minimal added weight, supporting precise assembly and extended product lifespan.
Frequently Asked Questions
Q1. What are the advantages of flanged concave hex head design on titanium motorcycle bolts?
A: The flanged head provides a larger contact area for more stable fastening. The concave hex design keeps the bolt head compact and improves the appearance of exposed motorcycle components. It is commonly used on visible areas such as engine covers, brackets, fairing mounts, and other performance upgrade parts.
Q2. Can titanium flanged concave hex head bolts directly replace standard motorcycle bolts?
A: Yes, they can replace standard bolts when the thread size, diameter, and length are the same. Before installation, customers should confirm the original bolt specifications and application requirements. Proper size matching is important to ensure safe and reliable fastening.
Q3. Can these flanged concave hex head bolts be customized for OEM or special applications?
A: Yes, customization is available for different project requirements. Options may include thread specifications, dimensions, surface finishes, and colors. OEM and bulk orders can be evaluated based on the required application and production feasibility.
Q4. What material grade is used for these flanged concave hex head bolts and what are its properties?
A: These bolts are made from Grade 5 Titanium (Ti-6Al-4V). It has a density of 4.43 g/cm³ (approx. 55% lighter than steel), a tensile strength of ≥ 900 MPa, a yield strength of ≥ 830 MPa, and a hardness of 34–36 HRC, offering high fatigue, shear, and corrosion resistance.
Q5. How should I prevent galling during the installation of these titanium bolts?
A: To prevent galling, you should apply a high-quality anti-seize compound when connecting titanium to titanium or titanium to aluminum. It is also important to torque the bolts to specification using a calibrated wrench to avoid deforming the concave head.
Q6. What color options and finishes are available for OEM customization?
A: The bolts are available in natural, anodized, or PVD coating surface finishes. Color customization options include rainbow, blue, black, and gold. Optional laser logo engraving and custom packaging are also supported.