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Grade 5 Titanium Shoulder Button Head Bolts for Motorcycles - China Suppliers & Factory Direct
Key Features
Accurate Alignment for Reduced Vibration
The shoulder positions components precisely, reducing movement and vibration. Lateral loads pass through the shoulder, protecting threads and keeping titanium shoulder bolts reliable under repeated stress.
Controlled Clamping for Surface Protection
The shoulder height provides a natural tightening limit, allowing clamping force to remain consistent and repeatable. This structure helps reduce surface damage caused by over tightening during installation or routine maintenance.
Lightweight Grade 5 Titanium with PVD Finish
Made from Grade 5 titanium, these titanium shoulder bolts weigh roughly 57% less than steel fasteners, reducing unsprung mass and improving handling. PVD coating resists corrosion and maintains a high-quality look over time.
Low-Profile Button Head Design
The low-profile button head fits tight spaces, preventing interference during installation or maintenance. Its consistent height ensures repeatable assembly and protects components, supporting high-end motorcycle builds and reducing costly rework.
Installation & Maintenance Guidance
Seat the Shoulder Properly. Tighten each bolt until its shoulder contacts the mounting surface. Don’t apply extra torque, as it may damage panels or nearby components.
Use Threadlocker on Brake Components. Apply medium strength threadlocker when installing Titanium Shoulder Bolts on brake discs and calipers. Follow OEM torque specs to ensure reliable performance under heat and repeated braking.
Technical Specifications
1. Material & Mechanical Properties
| Parameter | Details |
|---|---|
| Material | Grade 5 Titanium (Ti-6Al-4V) |
| Density | 4.43 g/cm³ |
| Tensile Strength | ≥ 900 MPa |
| Yield Strength | ≥ 830 MPa |
| Hardness | 33–36 HRC |
| Corrosion Resistance | Excellent |
| Reference Standards | ISO Metric Thread |
2. Dimensional & Thread Data
| Parameter | Details |
|---|---|
| Diameter Range | M6 / M8 (other diameters available upon request) |
| Length Range | Thread length 15–35 mm |
| Shoulder Height | 3–5 mm (varies by model) |
| Thread Pitch | M6: 1.0 / M8: 1.25 |
| Thread Type | Metric Coarse |
| Drive Type | Internal Hex |
| Tolerance | ISO 6g |
3. Finishing & Customization Options
| Parameter | Details |
|---|---|
| Finish Options | Burnt Blue / Black / Gold / Natural (other colors on request) |
| Processing Method | Polished / Anodized / PVD |
| Logo Engraving | Available |
| Packaging | Bulk cartons / Custom retail sets |
| OEM Customization | Supported (shoulder size, finish, thread length) |
Application Scenarios
1. Motorcycles
Brake Disc Mounting
For motorcycle brake discs, the shoulder on these titanium shoulder bolts takes the shear load during hard braking rather than the threads. This helps keep the rotor properly aligned and reduces stress on the bolt in extreme braking conditions.
Fairings and Body Panels
When fastening fairings or body panels, the shoulder serves as a depth limiter. It helps reduce hole wear caused by vibration and lowers the risk of panel damage from over tightening.
2. Bicycles / MTB & Precision Engineering
Precision Positioning Under Repeated Assembly
In suspension pivot points and lightweight racing disc brake connections, titanium shoulder bolts help keep parts properly positioned. They also make repeated installation more consistent when components need to be removed and refitted.
Frequently Asked Questions
Why should I use titanium shoulder bolts instead of standard steel bolts?
Grade 5 titanium shoulder bolts are approximately 57% lighter than steel, which significantly reduces unsprung mass and improves overall handling. Additionally, they offer exceptional corrosion resistance and a high strength-to-weight ratio.
How does the shoulder design help with brake disc mounting?
The shoulder design allows lateral and shear loads during braking to pass directly through the unthreaded shoulder rather than the threads. This protects the threads from damage, keeps the brake rotor precisely aligned, and reduces stress under heavy braking.
Can these shoulder bolts prevent over-tightening?
Yes. The height of the shoulder serves as a physical depth limit. This ensures that the clamping force remains consistent, repeatable, and prevents over-tightening that could damage panels or other sensitive components.
What customization options are available?
We offer extensive customization, including shoulder sizes, thread lengths, customized finishes (Burnt Blue, Black, Gold, Natural), logo engraving, and specialized packaging for retail or bulk distribution.
What is the best way to install and maintain these bolts?
Tighten each bolt until the shoulder meets the mounting surface without applying excessive torque. For high-stress applications like brake calipers or discs, apply a medium-strength threadlocker and always follow the OEM torque specifications.