Ti-6Al-4V Gr5
Titanium Alloy Disc Brake Bolts with Torx Head Flange Screws for Bike & Motorcycle Ti Bolts
Drive: T25 / Torx Flanged
Class: 10.9 Mechanical Equivalent
Export-Grade Inventory
Precision Titanium Fasteners for High-Performance Frames
Manufactured under strict ISO 9001:2015 controls in Baoji, China. Mill test certificates, precision-rolled threads (6g tolerance), and custom anodized finishes supplied directly to commercial builders, racing workshops, and performance distributors in Andorra la Vella.
Ti-6Al-4V Gr5
Customized M8 Gr5 Titanium Alloy Pan Head Bolts and Screws for Motorcycles
Thread: Rolled M8 Metric Pitch
Head: Low-Profile Pan / CNC Socket
Ti-6Al-4V Gr5
Hot Selling Gr5 Titanium Bolts M10*25mm High Quality Hex Flange Head Plain Finish UNF Thread Motorcycle Modified
Thread: M10×25mm UNF / Metric
Finish: Ultra-Clean Plain Polished
Ti-6Al-4V Gr5
High Strength Customized M31*Super Light Anti-Skid Oil Cap for Motorcycle Custom Production Plants Nut
Geometry: CNC Anti-Skid Knurled M31
Mass Reduction: -46% vs OEM Steel
Ti-6Al-4V Gr5
Titanium Alloy CNC Disc Brake Disc Head Bolts Torx Head DIN Thread Anodized/PVD Finish Class 10.9/12.9 Grade TKS Brand Factory
Rating: Class 10.9/12.9 Structural
Surface: Anodized / PVD Wear Finish
Ti-6Al-4V Gr5
GR5 Anodized Titanium Torx Head Standard Thread Self-Tapping M6 Screw for Motorcycles
Head Style: Torx Flush Fairing/Frame
Thread: Self-Tapping Metric M6
Ti-6Al-4V Gr5
Motorcycle Engine Parts Bolts M14 Titanium Gr5 Nuts Oil Drain Plugs Titanium Nuts
Sizing: Precision CNC M14 Hex Flange
Thermal Limit: Stable to 400°C
Ti-6Al-4V Gr5
Factory M10 CNC 90-Degree Hex Flange Head GR5 Titanium Plain Throttle Brake Clutch Wire Cable Adjuster Parts for Motorcycle
Form: 90° Flange Cable Adjuster
Tolerance: Down to ±0.005mm
Technical Whitepaper
Structural Titanium Fasteners in Severe Pyrenean Operating Environments
An engineering analysis of Ti-6Al-4V Grade 5 metallurgy, dynamic fatigue thresholds, and anti-seize protocols in extreme elevation gradients.
Executive Summary: For high-performance cycling engineering firms, suspension tuning shops, and motorsport builders located in Andorra la Vella, component mechanical failure is not merely a service nuisance—it is an acute safety liability. Navigating continuous grade shifts from the valley floor (1,023m) up to mountain passes exceeding 2,400 meters (such as Port d'Envalira) exposes cycle and motorsport frames to severe structural shear stresses, high-frequency vibratory chatter, and brutal winter road de-icing salts. This whitepaper details why Zunvo’s hot-forged and CNC-finished Grade 5 Ti-6Al-4V titanium frame bolts deliver the decisive mechanical upgrade over traditional 8.8/10.9 steel and 7075-T6 aluminum hardware.
Mechanical engineers designing or retrofitting mountain bike (MTB) rear linkages, downhill front fork crowns, disc brake calipers, and motorcycle trellis subframes must manage conflicting physical variables: minimizing unsprung rotating mass while maintaining high shear yield limits. Fasteners made from Grade 5 titanium (chemical designation Ti-6Al-4V, Werkstoff 3.7165) provide an unmatched strength-to-density ratio. With a nominal mass of 4.43 g/cm³, Grade 5 titanium is roughly 44% lighter than chromium-molybdenum alloy steel, yet achieves an ultimate tensile strength exceeding 895 to 950 MPa.
In Andorra’s elite mountain racing circuits—including the world-renowned downhill and enduro tracks at Pal Arinsal and Vallnord—chassis linkage hardware undergoes cyclical impact loading that induces micro-fretting in inferior fasteners. Standard cut threads create sharp internal notch geometries that act as stress concentration risers. To counteract this failure mode, Zunvo employs cold/warm thread-rolling processes post-heading. Thread rolling reorients the grain structure of the titanium alloy parallel to the thread profile, increasing thread flank hardness, eliminating surface micro-tearing, and boosting fatigue cycle endurance by up to 35% compared to single-point cut threads.
≥ 895 MPa
Min. Tensile Strength
4.43 g/cm³
Lightweight Density
±0.005 mm
Precision Machining Limit
100%
Go / No-Go Thread Inspection
Targeted Applications
Localized Engineering Scenarios across Andorra la Vella
Specific performance demands encountered across the parishes of Andorra: from World Cup DH trails to high-altitude touring passes.
Pal Arinsal & Vallnord UCI MTB Circuity
Suspension rocker pivots, shock mounts, and disc rotor mounts in UCI-grade downhill racing undergo relentless lateral deflection. Switching to Zunvo Gr5 M6/M8 Torx bolts eliminates bolt shear failure while saving over 120 grams of critical frame weight per downhill bike rig.
Severe Winter Highway De-Icing Exposure
Andorra's primary transit corridors (CG-1, CG-2, and CG-3) require heavy salt and magnesium chloride applications between November and April. Standard alloy steel bolts corrode rapidly, seizing inside carbon or aluminum frame bungs. Titanium forms a self-healing TiO2 passivation layer completely immune to road salts.
High-Altitude Motorcycle Alpine Touring
Alpine touring and sport motorcycles climbing Col d'Ordino or Port d'Envalira generate extreme brake caliper temperatures followed by rapid thermal quenching. Zunvo M10 brake caliper mount bolts and M14 drain plugs remain thermally stable up to 400°C without loss of clamping torque or thread galling.
Empirical Metallurgy
Structural Material Comparison for Alpine Fasteners
Comparative physical properties: Ti-6Al-4V Gr5 vs. Standard Marine Stainless, Class 10.9 Carbon Steel, and Aerospace 7075-T6 Alloy.
| Mechanical / Chemical Property | Gr5 Ti-6Al-4V (Zunvo Standard) | A4-80 Stainless Steel | Class 10.9 Alloy Steel | 7075-T6 Anodized Aluminum |
|---|---|---|---|---|
| Volumetric Mass Density (g/cm³) | 4.43 (Optimal Balance) | 7.95 (High Mass) | 7.85 (High Mass) | 2.81 (Extremely Light) |
| Yield Strength (Rp0.2, MPa) | ≥ 830 | 600 | 940 | 505 |
| Tensile Strength (Rm, MPa) | ≥ 895 – 950 | 800 | 1,040 | 570 |
| Modulus of Elasticity (GPa) | 110 (Absorbs Alpine Chatter) | 193 | 210 | 72 |
| Corrosion Resistance (De-Icing Salts) | Immune (Forms Stable TiO2 Film) | High (Risk in Crevices) | Extremely Poor (Rusts Rapidly) | Moderate (Pitting under Salt) |
| Shear Fatigue Endurance Limit | Superior (510 MPa @ 10⁷ cycles) | Moderate (Work Hardens) | High (Notch-Sensitive) | Low (Fatigue Cracks Fast) |
Note: While Class 10.9 alloy steel provides slightly higher absolute tensile yield, its susceptibility to environmental stress corrosion cracking (SCC) and rapid oxidization in the presence of snow-melting brine makes it problematic for exposed frame mounts in Andorra. 7075-T6 aluminum lacks the shear ductility necessary for brake caliper or suspension linkage positions, making Grade 5 titanium the ultimate compromise between safety, mass, and environmental permanence.
Industry Insights
Macro Trends Driving Titanium Fastener Adoption in Andorra
How the evolution of performance e-MTBs, commercial customs mechanics, and racing tuning are shaping fastener procurement in Andorra la Vella.
The commercial ecosystem of Andorra la Vella occupies a unique economic and technical position within Europe. Benefiting from low indirect taxation rates (IGI at 4.5%), the Principality is a premier European hub for high-end retail, motorsport workshops, professional road cyclists, and boutique frame fabricators. Three principal trends are driving high-volume titanium fastener imports:
Electrification of Alpine Mountain Bikes (e-MTB)
Modern full-power e-MTBs weigh between 22 and 26 kg. This elevated mass, combined with the high torque delivered by electric drive units on 25%+ Pyrenean gradients, creates torsional shear loads on rear linkage frame bolts up to 40% higher than traditional acoustic bikes. Gr5 titanium provides the fatigue life needed to prevent chassis play and premature pivot bearing failure.
Non-EU Customs Optimization & Direct Supply
Because Andorra is not an EU member state, cross-border commercial transactions require precise customs declarations (DUA). Regional intermediaries in France or Spain often mark up hardware components by 200–300%. Zunvo provides direct factory-to-Andorra logistics, supplying full HS tariff classification codes (7318.15 / 8108.90), commercial packing invoices, and mill analysis reports for friction-free customs clearance via Spain (La Farga de Moles) or France (Pas de la Casa).
Custom CNC Aesthetics & PVD Color Matching
Andorran boutique workshops pride themselves on bespoke visual curation. In addition to high mechanical performance, Zunvo’s advanced vacuum Physical Vapor Deposition (PVD) and micro-arc anodization allow frames to be matched with durable Burnt Rainbow, Anodized Gold, Deep Cobalt Blue, and Stealth DLC (Diamond-Like Carbon) Black finishes that resist tool scarring.
Enterprise Manufacturing Authority
Why Global Race Engineers Rely on Zunvo Titanium
Headquartered in Baoji—China's renowned Titanium Valley—with fully integrated smelting, hot heading, precision CNC, and metallurgical testing.
100% Raw Material Heat Traceability
We source virgin sponge titanium and vacuum-arc remelted Ti-6Al-4V bar stock directly from Baoji tier-one mills. Every shipment exported to Andorra is accompanied by an authentic Mill Test Certificate (EN 10204 3.1) stating exact chemical composition and mechanical tensile limits.
Sub-Micron Multi-Axis CNC Turning
Our workshop houses high-precision Japanese multi-axis CNC turn-mill centers capable of maintaining outer diameter, runout, and concentricity tolerances down to ±0.005 mm. Critical thread roots are inspected using optical optical comparators and hardened master pitch gauges.
Rapid Prototyping: 3-Day Sample Dispatch
Need a custom-tapered M7 fork clamp bolt or an extra-long suspension link axle for a prototype downhill rig? Send us your 2D PDF or 3D STEP file. Our dedicated R&D engineering cell delivers machined samples within 72 hours for fitment verification before serial production.
Zero-Defect Quality Assurance
Over 101–200 specialized titanium workers execute strict quality controls: 100% thread Go/No-Go verification, torque-to-yield stress tests, and optical coordinate measuring machine (CMM) audits ensure that no out-of-spec fastener enters shipping crates.
Procurement Knowledgebase
Frequently Asked Questions for Importers in Andorra
Key technical, mechanical, and logistical questions encountered when ordering titanium fasteners for Pyrenean applications.
Can Gr5 titanium bolts directly replace Class 10.9 or 12.9 steel frame bolts?
Yes, in the vast majority of frame, brake caliper, and suspension pivot applications. Ti-6Al-4V Grade 5 features a tensile yield strength of ≥830 MPa and ultimate tensile strength of 895–950 MPa, placing it squarely in the performance range of Class 10.9 steel while saving 44% in mass. For high-stress applications originally specifying Class 12.9 fasteners, our engineering team can review your specific torque and shear calculations to confirm safety factors or recommend optimized thread-pitch profiles.
How do we prevent galvanic corrosion when installing titanium bolts into carbon fiber or aluminum frames?
Galvanic corrosion occurs when two dissimilar metals are connected via an electrolyte (such as snowmelt loaded with road de-icing salts). Because titanium has a high electrical nobility close to carbon fiber, the galvanic potential between titanium and carbon is minimal—far safer than carbon-to-steel pairings. When installing titanium bolts into 6000- or 7000-series aluminum frame inserts, always apply a high-quality anti-seize paste containing copper-free molybdenum disulfide or specialized titanium assembly paste. This prevents galvanic bonding and eliminates cold galling during torque-down.
What torque values should be applied to titanium frame fasteners compared to steel?
Titanium has a lower modulus of elasticity (~110 GPa) than steel (~210 GPa), meaning it elongates slightly more under equivalent tension. Because anti-seize paste is mandatory for titanium fastener assembly, the thread friction coefficient is lowered. As a general engineering rule of thumb, torque values for lubricated Grade 5 titanium should be reduced by approximately 10% to 15% relative to dry OEM steel torque specifications, unless specifically specified otherwise on our technical drawing sheets. Always use a calibrated torque wrench.
How are commercial shipments routed and cleared through customs into Andorra?
Shipments dispatched from our Baoji factory to Andorra la Vella are typically transported by air express (DHL Express, FedEx International Priority, or UPS Air) under international transit documents. Goods entering Andorra clear customs either through the Spanish border (Duana de la Farga de Moles) or the French border (Duana del Pas de la Casa). We provide complete commercial invoices with precise HS tariff codes (7318.15 for bolts/screws, 8108.90 for general titanium articles), weight certificates, and Mill Test Reports, allowing your local Andorran customs broker to swiftly file the DUA (Document Únic Administratiu) under local IGI tax rates.
Will anodized or PVD coatings chip or fade when exposed to freezing Pyrenean mud and gravel?
Our anodizing process creates a dense surface titanium dioxide layer via controlled electrochemical voltage; there is no organic paint or lacquer film that can chip or flake off. For extreme abrasion resistance—such as frame skid-plate screws, footpeg bolts, or lower fork guards—we recommend our Physical Vapor Deposition (PVD) finishes (including TiN Gold, DLC Black, and Rainbow). PVD coatings deposit a ceramic-grade layer with surface microhardness exceeding 2,000 Vickers, significantly outlasting bare aluminum or conventional anodizing under rock strikes and flying gravel.
What are the minimum order quantities (MOQ) for catalog and bespoke custom items?
For standard catalog items (such as standard M6 disc brake bolts, DIN 912 socket screws, and hex flange nuts), standard MOQs range from 100 to 200 units, with high-volume price tiering for wholesale distributors. For bespoke, drawing-based OEM components, our initial validation batch size is 100 pieces to enable rapid fitment checks and bench testing before advancing to full production runs.
