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China Suppliers Factory Titanium Flanged Concave Hex Head Bolts for Motorcycle & Performance Use - Grade 5 Ti-6Al-4V
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
| 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
| 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
| 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
What are the main advantages of Grade 5 Titanium bolts compared to steel?
Grade 5 Titanium (Ti-6Al-4V) bolts are approximately 55% lighter than steel while offering high tensile strength (≥ 900 MPa), exceptional corrosion resistance against salt and moisture, and superior fatigue resistance.
Why is the concave design of the bolt head beneficial?
The sculpted concave head profile removes excess material to reduce unsprung mass without sacrificing structural integrity. It also provides a smooth, aerodynamic, and flush fit against fairings and panels.
What precautions should be taken during installation?
You should apply a high-quality anti-seize compound when connecting titanium to titanium or aluminum to prevent galling. Additionally, always torque the bolts using a calibrated wrench to prevent deforming the concave head.
What color and customization options do you offer?
We support OEM customization including thread types, head styles, custom lengths, laser logo engraving, and various surface finishes such as natural, PVD coating, or anodized colors (rainbow, blue, black, and gold).
In what sizes are these flanged concave hex head bolts available?
Our standard sizing includes a diameter range from M6 to M10, length range from 15mm to 45mm, and thread pitches of 1.0mm to 1.5mm in both Metric Coarse and Fine thread types.