0102030405
High-Strength Titanium Hex Socket Cap Bolt with Washer - China Suppliers and Factory, M5-M8 for Motorcycles and Bicycles
Key Features
Reinforced Head Strength
The tall cylindrical head strengthens the critical head–shank junction, improving torque capacity and fatigue resistance. Ideal for vibration-prone structural joints, this ensures stable clamping over repeated cycles.
Deep Hex for Reliable Torque
A deeper hex recess allows firmer tool engagement and cleaner torque transfer. The titanium hex socket cap bolt with washer reduces cam-out, protects the drive shape, and supports precise tightening in repeated maintenance.
Enhanced Shear Resistance
Reinforced sidewalls and a thicker crown distribute lateral forces efficiently. For motorcycles and machinery, the titanium hex socket cap bolt with washer maintains stability under directional load changes.
Semi-fixed Washer Protection
The captive washer rotates for alignment but stays secure during tightening. It protects coated surfaces, reduces fretting, and ensures even clamp distribution, preserving component geometry under vibration.
Precision Machined Seating
CNC-machined head and washer maintain concentricity for even seating. This ensures repeatable clamp force, reduces torsional scatter, and limits galling—essential for high-quality B2B titanium fasteners.
Installation & Maintenance Guidance
- Hand-start & washer alignment: Thread the titanium hex socket cap bolt with washer by hand first. The semi-fixed washer keeps it aligned, protects surfaces, and helps maintain tightness in parts that vibrate frequently.
- Torque check & reference: After installation, check torque on joints exposed to vibration or heat. For M5–M8 Grade 5 titanium bolts, follow ISO 4762 / DIN 912 torque charts to avoid over-tightening.
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 | 30–36 HRC |
| Fatigue & Shear | / |
| Corrosion Resistance | Excellent (moisture, salt, mild chemicals) |
| Operating Temperature Range | / |
| Standards Compliance | DIN 912 / ISO 4762 (hex socket head cap screw) |
2. Dimensional & Thread Data
| Parameter | Details |
|---|---|
| Diameter Range | M5–M8 |
| Length Range | 10–40 mm |
| Thread Pitch | 0.8–1.25 mm |
| Thread Type | Metric Coarse / Fine |
| Drive Type | Hex Socket (internal) |
| Tolerance | ISO 6g |
3. Finishing & Customization Options
| Parameter | Details |
|---|---|
| Surface Finish | Natural Titanium / Polished / Anodized / PVD Coating |
| Logo Engraving | Available |
| Packaging | Bulk cartons / Custom retail sets |
| OEM Customization | Supported (thread type, head style, finish, length) |
Application Scenarios
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Motorcycle Structural & Accessory Mounts
Panels & high-load mounts
Used in brake calipers, footrest brackets, handlebar clamps, engine mounts, and frame joints exposed to vibration and torque shifts. The titanium hex socket cap bolt with washer maintains preload stability and minimizes fretting on painted or anodized motorcycle surfaces. (M6–M8 × 15–30 mm)Metal accessories & auxiliary brackets
Suitable for luggage racks, chain guards, skid plates, and accessory brackets that see repeated assembly. The captive washer of this titanium fastener reduces micro-movement, preserves alignment, and offers strong anti-loosening performance in long-term motorcycle use. (M6 × 12–25 mm). -
Bicycle & E-bike Load-bearing Interfaces
Ideal for stems, linkage pivots, and suspension joints. Many riders choose the titanium hex socket cap bolt with washer for its stable torque retention and reduced marking on delicate anodized frames during long-term use, especially in lightweight load-bearing assemblies. (M5 × 10–20 mm).
-
Light Machinery Panels & Service-cycle Components
Applicable to compact housings, metal fixtures, and equipment panels requiring frequent service. The stable seating and preload retention of this CNC-machined bolt help limit clamp variation and support low-mark installation in thin-wall machinery structures. (M6–M8 × 15–35 mm).
Frequently Asked Questions
What are the benefits of the semi-fixed washer on this titanium bolt?
The captive semi-fixed washer rotates freely for alignment during installation but remains securely attached to the bolt. This protects delicate coated or anodized surfaces from scratching, reduces fretting, and ensures an even distribution of clamping force under heavy vibration.
What grade of titanium is used, and what are its mechanical properties?
These bolts are manufactured from high-strength Grade 5 Titanium (Ti-6Al-4V). It features a density of 4.43 g/cm³, a tensile strength of ≥ 900 MPa, a yield strength of ≥ 830 MPa, and a hardness rating of 30–36 HRC, offering an exceptional strength-to-weight ratio.
How does the deep hex drive design prevent damage during maintenance?
The deeper internal hex socket allows for firmer tool engagement and a cleaner transfer of torque. This design minimizes the risk of tool slippage (cam-out), protects the drive shape from rounding, and supports precise, repeatable tightening cycles.
What are the recommended application scenarios for these bolts?
They are ideal for motorcycle structures (brake calipers, engine mounts, frame joints), bicycle and E-bike load-bearing pivot points (stems, linkages), and light machinery panels that require frequent service and high vibration resistance.
Are custom finishes and sizes available for OEM orders?
Yes, full OEM customization is supported. You can customize the thread type, head style, length, and surface finish (including natural titanium, polished, anodized colors, and PVD coatings) along with optional logo engraving.