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Grade 5 Titanium Shoulder Button Head Bolts for Motorcycles - China Suppliers & Factory Direct sản phẩm
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
What are the main benefits of using Grade 5 Titanium shoulder bolts?
Grade 5 Titanium shoulder bolts offer high tensile strength (≥ 900 MPa) and yield strength (≥ 830 MPa) while weighing approximately 57% less than steel fasteners. They also provide excellent corrosion resistance, especially when combined with a PVD finish.
How does the shoulder design reduce vibration and wear?
The shoulder acts as a precise alignment guide that absorbs lateral and shear loads instead of the threads. This reduces component movement, limits vibration, and prevents hole wear on sensitive parts like body panels and fairings.
What is the recommended installation method for these bolts?
Ensure the shoulder is seated completely flat against the mounting surface. Avoid applying excessive torque beyond the contact point to prevent surface damage. For critical applications like brake discs, always apply a medium-strength threadlocker and follow OEM torque specifications.
Why are shoulder bolts crucial for motorcycle brake disc mounting?
During hard braking, the brake disc is subjected to extreme shear forces. The shoulder of the titanium bolt absorbs these lateral loads directly, protecting the threaded portion from fatigue and ensuring the brake rotor remains perfectly aligned.
Can these titanium shoulder bolts be customized?
Yes. OEM customization is supported for shoulder sizes, thread lengths, and finishes. Available finishes include Burnt Blue, Black, Gold, and Natural through polishing, anodizing, or PVD processing. Custom logo engraving is also available.