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Grade 5 Titanium Shoulder Button Head Bolts for Motorcycles - China Suppliers & Factory Quality Parts
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)
Why should I use titanium shoulder bolts instead of standard steel bolts?
Grade 5 titanium shoulder bolts offer a weight reduction of approximately 57% compared to steel. They provide an outstanding strength-to-weight ratio, excellent corrosion resistance, and a precise shoulder that handles lateral shear loads to protect the threads and ensure perfect component alignment.
How does the shoulder design protect components during installation?
The shoulder height acts as a built-in depth limiter. This prevents over-tightening during installation, distributing clamping force consistently and protecting delicate surfaces like carbon fiber panels, plastic fairings, and precision pivot points from cracking or wearing down.
Do I need to use threadlocker with titanium shoulder bolts?
Yes, especially for critical, high-vibration applications like motorcycle brake discs and calipers. Applying a medium-strength threadlocker helps secure the threads while still allowing for future maintenance.
Are these titanium shoulder bolts customizable?
Absolutely. We support OEM customization options including custom shoulder dimensions, thread lengths, unique finishes (like Burnt Blue, Gold, Black, or Natural), and custom logo engraving.
What are the mechanical limits of Grade 5 Titanium bolts?
Grade 5 Titanium (Ti-6Al-4V) features a tensile strength of ≥ 900 MPa, a yield strength of ≥ 830 MPa, and a hardness range of 33–36 HRC, making it highly reliable for demanding mechanical applications.