Precision-Engineered Titanium Fasteners
Fully compliant with DIN 912, DIN 6921, ISO 4014, and custom CAD specifications. Optimized for motorsport chassis, aerospace brackets, marine structures, and high-performance bicycles.
Titanium Bolts with Flat Head Screws Zinc Finish M1.6 Thread Industrial Grade
- Grade: Gr5 (Ti-6Al-4V) / Gr2
- Thread Pitch: Metric Fine M1.6
- Surface: Zinc/Passivated Protective
GR5 Titanium Screws Torx Round Head Bolts Fine Thread Metric
- Drive Type: High-Torque Torx (T25–T50)
- Standard: Custom Motorsport Spec
- Application: Engine Mounts & Fairings
Motorcycle Titanium Bolts Hexagonal Step Flat Head M8 1.25 Disc Brake
- Geometry: Hexagonal Stepped Shoulder
- Thread: M8 x 1.25 Rolled Threads
- Safety Class: Critical Braking Torque
ZFTI High Strength GR5 Plain Finish Titanium Flange Bolt M4–M10
- Standard: DIN 6921 / ISO 4162
- Process: CNC Precision Machined
- Certification: ISO 9001 / Mill Test Cert
M8 Titanium Torx Head Motorcycle Bolt Gr5 CNC Anodized PVD Star Screw
- Coating: PVD Vacuum Nitride / Anodized
- Material: Ti-6Al-4V Annealed Bar
- Feature: Reduced Stripping Risk
DIN912 M6 Burnt Blue Titanium Socket Head Cap Screw for EBike
- Standard: DIN 912 / ISO 4762
- Treatment: Electrochemical Burnt Blue
- Weight Ratio: 44% Lighter than Steel 8.8
OEM All Sizes M3–M20 Titanium Hex Nut Plain Finish Standard Stock
- Standard: ISO 4032 / DIN 934
- Range: M3 up to M20 Complete
- Stock Status: Ready-to-Ship Batches
Anodized Rainbow GR5 Titanium Flange Head Allen Bolt Modification
- Configuration: Flanged Socket Head
- Finish: Spectrum Anodized Rainbow
- Yield Strength: ≥ 828 MPa
Structural Metallurgy: Why Aerospace & Automotive Specify Grade 5 Titanium
In structural procurement, selecting fasteners based solely on superficial weight advantages without evaluating stress corrosion cracking, fatigue limits, and thermal elongation creates significant engineering vulnerability.
| Material Designation | Yield Strength (Rp0.2 MPa) | Tensile Strength (Rm MPa) | Density (g/cm³) | Strength-to-Weight Ratio | Galling Susceptibility | Primary Industrial Use-Case |
|---|---|---|---|---|---|---|
| Titanium Grade 5 (Ti-6Al-4V) | 828 – 910 | 895 – 1000 | 4.43 | 225 kN·m/kg | Moderate (Mitigated via PVD/MoS2) | Chassis subframes, brake rotors, rotating assemblies, EV battery packs |
| Titanium Grade 2 (CP Titanium) | 275 – 350 | 345 – 450 | 4.51 | 99 kN·m/kg | Low-Moderate | Desalination pipelines, exhaust hangers, chemical processing tanks |
| Structural Alloy Steel 8.8 (ISO 898-1) | 640 | 800 – 830 | 7.85 | 105 kN·m/kg | Low | General machinery, non-critical static brackets, construction |
| High-Tensile Steel 10.9 (ISO 898-1) | 940 | 1040 | 7.85 | 132 kN·m/kg | Low | Heavy suspension links, commercial vehicle wheel hubs |
| Stainless Steel A2-70 (AISI 304) | 450 | 700 | 7.93 | 88 kN·m/kg | Severe | Marine architectural fittings, consumer appliance assemblies |
Thread Rolling vs. CNC Thread Cutting
For high-reliability Grade 5 titanium fasteners, manufacturing methodology dictates failure limits. Cut threads slice through the metal's grain structure, creating microscopic stress risers at the root diameter. At our Baoji facilities, high-stress titanium hex bolts undergo cold and warm thread-rolling processes.
- Continuous Grain Flow: Rolled threads deflect rather than sever grain lines, increasing fatigue life under cyclical tensile loading by up to 300%.
- Burnished Root Surface: The compressive deformation work-hardens the root radius, yielding an exceptionally smooth surface finish (Ra ≤ 0.4 µm) that inhibits micro-crack nucleation.
- Torque Predictability: Flank profile geometry adheres strictly to DIN 13-1 Class 6g tolerance limits, ensuring repeatable clamp loads without thread binding.
Mitigating Galling & Galvanic Corrosion
When coupling titanium bolts into magnesium transmission casings or 6061-T6 aluminum hubs, the electrochemical potential differential can initiate galvanic reactions if electrolyte intrusion occurs. We deploy engineered surface mitigations to prevent atomic adhesion (cold welding).
- PVD Ceramic Coating: Titanium Nitride (TiN) or Diamond-Like Carbon (DLC) application forms a nano-scale barrier layer providing surface hardness exceeding 2000 HV.
- Thermal Micro-Oxidation: Controlled anodic oxidation builds a durable, anti-frictional oxide film without adding dimensional tolerances to the thread interface.
- Tribological Protocols: Application of nickel-free, fluoropolymer-based anti-seize paste preserves joint lubricity across cyclic operational temperatures up to 400°C.
Why International OEMs Contract Baoji Fastener Infrastructure
Operating since 2013 from the Honeycomb Industrial Park in Baoji, Shaanxi, Yevzo integrates raw mill supply directly into precision multi-axis machining cells, removing supply intermediary markups and batch variance.
Upstream Chemical Control & Sponge Titanium Quality
Baoji processes over 60% of China's titanium volume. By procuring vacuum-arc remelted (VAR) ingots conforming strictly to ASTM B348 and AMS 4928 standards, every heat lot is tested via spectrographic analysis. We ensure interstitial element levels (Oxygen ≤ 0.20%, Nitrogen ≤ 0.05%, Hydrogen ≤ 0.0125%) remain well within safe fatigue boundaries, preventing catastrophic brittle fractures common with secondary scrap melting.
Full-Spectrum Dimensional & Non-Destructive Testing
Quality assurance is not treated as an afterthought. Our internal quality protocol executes complete traceable verifications across every production order:
- Optical Comparator & 3D CMM: Micro-inspection of pitch diameter, runout, head concentricity, and fillet radius under DIN 912 and DIN 6921 geometries.
- Eddy Current & Dye Penetrant: Detection of surface seams, longitudinal cracks, and raw material bar laps before cold heading operations.
- Tensile & Proof-Load Verification: Calibrated destructive testing confirms Grade 5 bolts meet minimum proof-stress ratings without permanent plastic elongation.
Future Sourcing & Technology Trends in Titanium Fasteners
Global supply disruptions and engineering transitions across automotive and mobility industries are transforming how tier-1 procurement managers evaluate titanium fastener sourcing.
Electric Vehicle Unsprung Mass Optimization
With battery pack weights impacting EV efficiency and range targets, automotive engineers are switching from Class 10.9 steel lug bolts to Grade 5 titanium wheel studs and brake assembly bolts. Eliminating rotational unsprung inertia yields measurable improvements in suspension response, regenerative braking efficiency, and total platform battery range.
Near-Net-Shape Forging + High-Speed CNC Finishing
Traditional subtractive machining of titanium hex bolts can generate material scrap rates of up to 60%. Next-generation manufacturing incorporates hot and cold closed-die heading followed by multi-axis CNC secondary machining. This process hybrid reduces raw material loss, shortens delivery cycles, and lowers per-unit contract pricing for high-volume automotive runs.
Direct Mill-Integrated Factory Auditing
Western enterprise procurement is shifting away from decentralized trading companies toward verified origin manufacturing plants. Direct partnerships with Baoji production lines provide full mill test certificates (EN 10204 3.1), strict compliance with cross-border trade terms (DDP, CIF, FOB), and stable production capacity insulated from intermediary markups.
Frequently Asked Questions on Titanium Bolt Sourcing
Clear, unvarnished engineering answers addressing design feasibility, manufacturing tolerances, export logistics, and cost structures.
Can Grade 5 titanium bolts directly replace Class 10.9 steel bolts?
How does your factory control thread class tolerance on custom drawings?
What are the MOQ parameters and production lead times for custom fasteners?
What surface finishes and aesthetic treatments are available?
What Incoterms and payment channels are supported for international enterprise buyers?
Connect Directly with Our Titanium Fastener Engineers
Whether you require standard ISO/DIN inventory dispatch or a bespoke CNC component quote based on a 2D/3D CAD drawing, our engineering team in Baoji delivers technical review and commercial quotation within 24 hours.
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