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High-Strength Titanium Hex Socket Cap Bolt with Washer - China Suppliers & Factory for Motorcycles, Bicycles, and Machinery
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
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 & Machinery Interfaces
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 (FAQ)
Q1:
What are the benefits of the semi-fixed washer on this titanium bolt?
The captive semi-fixed washer is designed to rotate freely for precise alignment while remaining securely attached to the bolt. This protects delicate coated or anodized surfaces from scratching, reduces fretting, and ensures even clamp load distribution under high-vibration environments.
Q2:
What material grade is used for these hex socket cap bolts?
They are manufactured from high-quality Grade 5 Titanium (Ti-6Al-4V), which offers excellent mechanical properties including a tensile strength of ≥ 900 MPa, yield strength of ≥ 830 MPa, and superior corrosion resistance against moisture, salt, and mild chemicals.
Q3:
How does the deep hex recess design improve torque transfer?
The deeper hex socket recess allows for deeper and firmer tool engagement. This design minimizes the risk of tool cam-out (slipping), protects the internal drive shape from stripping, and ensures clean, repeatable torque transfer during assembly and maintenance.
Q4:
What specifications should I follow for torque during installation?
For standard M5 to M8 Grade 5 titanium bolts, it is recommended to follow the ISO 4762 or DIN 912 torque charts relative to the thread size. Always start threading by hand to ensure the washer aligns correctly before applying final torque with a calibrated tool.
Q5:
Can these titanium bolts be customized for specific OEM applications?
Yes, full OEM customization is supported. You can customize the thread type (metric coarse or fine), overall length (ranging from 10mm to 40mm), head style, and surface finishes (including natural titanium, polished, anodized colors, or PVD coatings).