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China Suppliers Factory for Lightweight Titanium Flanged Concave Hex Head Bolts 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
Why should I choose titanium flanged concave hex head bolts over standard steel bolts?
These bolts are made of Grade 5 Titanium (Ti-6Al-4V) which offers a high strength-to-weight ratio, being approximately 55% lighter than steel. Additionally, they provide superior corrosion resistance against salt, moisture, and road chemicals, making them ideal for high-performance automotive and motorcycle upgrades.
What is the purpose of the concave head design?
The sculpted concave head profile removes excess material to reduce unsprung mass without sacrificing structural integrity. It also fits smoothly against fairings and body panels for improved aerodynamics and a clean, flush aesthetic.
How do I prevent galling during the installation of titanium fasteners?
To prevent thread galling, it is highly recommended to apply a premium anti-seize compound to the threads whenever you are connecting titanium to titanium or titanium to aluminum surfaces.
Can these bolts be customized with OEM branding or specific colors?
Yes, we support full OEM customization. The bolts are available in natural, anodized (rainbow, blue, black, gold), or PVD coatings. We also offer laser logo engraving, custom packaging, and tailored specifications for thread types, head styles, and lengths.
What compliance and manufacturing standards do these bolts meet?
Our titanium flanged concave hex head bolts are manufactured using high-precision CNC machining with rolled threads and comply with ISO 4162 and DIN 6921 dimensional standards.