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Grade 5 Titanium Shoulder Button Head Bolts for Motorcycles - China Suppliers & Factory Direct Offer
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 (FAQ)
What are the main advantages of Grade 5 Titanium shoulder bolts?
Grade 5 Titanium shoulder bolts offer an exceptional strength-to-weight ratio, weighing about 57% less than standard steel fasteners. They provide high tensile strength (≥ 900 MPa), superior corrosion resistance, and excellent durability under extreme conditions.
Why is the shoulder design crucial for motorcycle brake disc mounting?
The shoulder acts as a load-bearing surface that handles lateral shear forces during hard braking instead of passing the stress to the threads. This ensures precise alignment of the rotor and minimizes thread wear and fatigue.
Should I use a threadlocker during the installation?
Yes. It is highly recommended to apply a medium-strength threadlocker when installing these bolts on critical assemblies like brake calipers and discs. Always follow the manufacturer's recommended torque specifications.
What finishing options are available for these bolts?
These bolts are available in Burnt Blue, Black, Gold, and Natural finishes. They can be processed using polishing, anodizing, or physical vapor deposition (PVD) coating to enhance corrosion resistance and aesthetics.
Do you support custom OEM dimensions?
Yes, we support full OEM customization including custom shoulder diameters, shoulder heights, thread lengths, drive styles, and custom laser-engraved logos to meet your specific application requirements.