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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 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
Q1: What are the main benefits of the semi-fixed washer on this titanium bolt?
The semi-fixed (captive) washer is designed to rotate for alignment during assembly while remaining securely attached. It prevents surface scoring/fretting on coated or delicate parts, ensures even clamp force distribution, and prevents accidental loss during maintenance.
Q2: Which grade of titanium is used, and what are its strength properties?
These bolts are made of Grade 5 Titanium (Ti-6Al-4V). This aerospace-grade alloy features a tensile strength of ≥ 900 MPa and a yield strength of ≥ 830 MPa, offering an exceptional strength-to-weight ratio.
Q3: How does the deep hex design prevent damage during tool installation?
The deeper internal hex drive allows for more secure tool engagement and cleaner torque transfer. This minimizes the risk of cam-out, protects the socket shape from rounding, and supports precise, repeatable tightening cycles.
Q4: Are these titanium bolts resistant to rust and harsh environments?
Yes, Grade 5 Titanium provides excellent natural corrosion resistance against moisture, saltwater, and mild chemical environments, making it ideal for outdoor applications like motorcycles and bicycles.
Q5: Which standards do these hex socket head cap screws comply with?
Our bolts comply with standard DIN 912 and ISO 4762 specifications for hex socket head cap screws, ensuring accurate dimensioning and seamless compatibility.
Q6: What customization options do you offer for OEM buyers?
We support comprehensive OEM customization including custom thread types (Metric Coarse/Fine), head styles, lengths, surface finishes (Natural, Polished, Anodized, PVD Coated), and custom logo engraving.