Aero Grade
M1.6 Flat Head Titanium Screws
- Standard: Precision Metric Micro
- Yield: 828 MPa Min
- Application: Switchgear / Gauge Cluster
Certified Hardware Stock
Precision Fasteners Engineered for Performance Tuning
Direct from our CNC turning and cold-forging facility in Baoji's Titanium Valley to Portuguese workshop docks. Each fastener incorporates aerospace-grade Ti-6Al-4V alloy with calibrated tensile yields surpassing ISO 8.8 structural ratings.
ISO 9001
ZFTI Gr5 Plain Hex Flange Bolt (M4-M10)
- Standard: DIN 6921 Flanged
- Material: Ti-6Al-4V Grade 5
- Application: Engine Casing / Calipers
Anodized
DIN912 M6 Burnt Blue Socket Head Screw
- Standard: DIN 912 / ISO 4762
- Treatment: Thermal Anodized Blue
- Application: Subframe & Bar Clamps
PVD Coating
M8 Titanium Torx Head Star Bolt
- Drive: Torx T40 / T45 Anti-Cam
- Finish: PVD Hard Nitride
- Application: Brake Rotor / Triple Trees
Custom Length
Burnt Blue M6 Modification Bolts Series
- Length Range: 12mm to 35mm
- Thread: Rolled M6x1.0 Metric
- Application: Fairing Mount / Radiator
UNF / Metric
ZFTI Class 8.8 Gr5 Hex Flange UNF/Metric
- Rating: Exceeds ISO 8.8 / 10.9
- Finish: PVD Titanium Coating
- Application: Swingarm / Sprocket Hubs
Dress-Up Fairing
Large Cap Head Colored Fairing Screws
- Geometry: Wide Low-Profile Dome
- Protection: Non-Scratch Anodize
- Application: Bodywork / Windshield
Captive Washer
M5x16mm Stem Screw with Washer Assembly
- Type: Captive Integrated Washer
- Grade: Ti-6Al-4V Cold Forged
- Application: Handlebar Stem / Dash Mount
2013
Baoji Foundry Established
100+
Multi-Axis CNC Units
-44%
Mass Vs Class 8.8 Steel
895 MPa
Min Tensile Performance
Geographic Metallurgy Insights
Engineering Solutions for the Greater Porto Two-Wheel Market
A technical assessment of why Grade 5 titanium fasteners solve the specific climatic, geographic, and road surface challenges faced by motorcycle riders and racing teams in the Porto district and the Norte Region.
Atlantic Maritime Atmospheric Protection
Porto and adjoining coastal hubs like Matosinhos, Leça da Palmeira, and Vila Nova de Gaia experience high annual humidity, prevailing Atlantic squalls, and dense marine airborne chloride deposits (salitre). Traditional zinc-plated OEM carbon steel fasteners experience surface pitting and rust blooming within 12 to 18 months, often resulting in fastener seizure inside aluminium engine cases.
Our Grade 5 titanium fasteners form an instantaneous, self-healing titanium dioxide (TiO₂) passivation layer. Operating under ASTM B117 salt spray accelerated testing for over 1,000 continuous hours, Yevzo Ti-6Al-4V fasteners exhibit zero micro-pitting, zero galvanic crusting, and completely preserve the structural integrity of threaded crankcases along the Portuguese coastline.
Granite Cobblestone & Vibration Damping
The historical urban core of Porto features extensive granite paving (calçada à portuguesa), severe grade inclines (such as the steep ascents from the Ribeira riverfront up through Boavista), and irregular surfaces. This topology exposes motorcycle chassis to persistent, high-frequency kinetic vibrations that induce cyclic mechanical fatigue and bolt backing-out.
Titanium possesses an elastic modulus of approximately 110 GPa—nearly half that of structural steel (205 GPa). This metallurgical flexibility allows our titanium flange and socket head bolts to act as microscopic mechanical springs under torque. They absorb high-frequency chatter without loosening, making them the preferred upgrade for front fork pinch bolts, triple trees, and engine support mounts across Northern Portuguese roads.
Unsprung Weight Reduction on the Track
Northern Portugal maintains a passionate motorcycle racing culture anchored by track events near the Circuito Vasco Sameiro in nearby Braga, cross-border testing at Circuito do Estoril, and twisting mountain tarmac runs through the Serra do Marão and the Douro Valley corridors. In competitive superbike and supermoto applications, unsprung and rotational mass is the single largest determinant of dynamic handling.
Switching heavy steel brake rotor bolts, sprocket studs, and front/rear axle clamp hardware to our CNC machined Gr5 bolts removes between 38% and 44% of mass directly at the wheel hub. This delivers immediate reductions in the wheel's gyroscopic moment of inertia, translating to significantly faster directional transitions through tight chicanes and reduced brake disc thermal warping.
Industrial Dynamics: Custom Café Racer Workshops & Portugal's Two-Wheeler Cluster
Portugal is widely recognized as one of Europe's largest bicycle and light electric two-wheeler production centers (the "Two-Wheeler Valley" centered in Águeda, just south of the Porto metropolitan area). Coinciding with this industrial foundation is a booming ecosystem of bespoke motorcycle ateliers, vintage restoration builders, and custom scrambler fabricators concentrated in Porto, Gaia, and Santo Tirso.
Porto custom builders require hardware that bridges classical aesthetic finishing with modern structural safety. Our factory supports these specialized customizers with bespoke small-batch runs: PVD rainbow (burnt blue) torx-driven engine dressing kits, black nitride low-profile fairing sets, and raw CNC micro-machined instrument clusters. By bypassing European intermediaries, local workshop owners gain direct access to factory pricing, certified mill test chemistry, and custom dimensioning down to singular batch orders.
Empirical Metallurgy
Comparative Fastener Mechanical Properties
Engineered design values based on verified tensile and shear pull testing per ASTM B348 and ISO 898-1 standards.
| Alloy Specification | Yield Strength (Rp 0.2) | Tensile Strength (Rm) | Density (g/cm³) | Elastic Modulus (GPa) | Marine Salt Spray (ASTM B117) | Primary Motorcycle Joint Usage |
|---|---|---|---|---|---|---|
| Gr5 (Ti-6Al-4V) - Yevzo Precision | 828 MPa | 895 - 1000 MPa | 4.43 | 110 | Immune (>1000 hrs intact) | Brake Caliper, Rotors, Triple Clamps, Sprockets |
| Gr2 (Commercially Pure Ti) | 275 MPa | 345 - 450 MPa | 4.51 | 105 | Immune (>1000 hrs intact) | Bodywork, License Plates, Tank Brackets, Fairings |
| OEM Class 8.8 Structural Steel | 640 MPa | 800 MPa | 7.85 | 205 | Fails (Rust after 72-120 hrs) | Standard Factory Assemblies (Non-weight critical) |
| Stainless Steel A2-70 (AISI 304) | 450 MPa | 700 MPa | 7.90 | 193 | Surface Pitting (240 hrs) | Decorative Covers, Non-critical Brackets |
| 7075-T6 Aluminium Alloy | 505 MPa | 570 MPa | 2.81 | 71.7 | Galvanic Pitting / Stress Crack | Only Non-Structural Windscreen & Fairings |
Baoji Direct Factory Foundry & Precision CNC
Operating since 2013 from the Honeycomb Industrial Park within the Baoji High-Tech Development Zone, Yevzo Titanium Metal Co., Ltd. controls the complete manufacturing chain. Located in China's "Titanium Valley," we eliminate distributor markups and retain absolute control from ingot melting through final thread inspection.
Our workshop houses over 100 high-precision CNC machining units, multi-axis turning-milling centers, cold-heading stations, and in-house vacuum PVD color-coating reactors. We serve major automotive, powersport, and industrial markets across Northern Europe, North America, and the Iberian Peninsula.
- Full Material Traceability: Certified ASTM B348 Ti bar stock with chemical & physical Mill Test Certificates (MTC) accompanying all batch dispatches.
- Cold-Rolled Threading Technology: Unlike cut threads that sever grain boundaries, our threads are precision cold-rolled to increase fatigue life under cyclic vibration by up to 30%.
- Bespoke OEM/ODM Capabilities: Rapid drawing conversion (STEP, DWG, PDF) to physical prototypes within 5 business days for specialized moto engineering houses.
B2B Buyer Intelligence
Frequently Asked Questions for Porto Buyers
Real-world technical and logistical answers for workshop managers, motorcycle racing teams, and parts distributors in Portugal.
How does shipping and customs clearance operate into Porto?
We provide full DDP (Delivered Duty Paid) shipping directly to workshop facilities in Porto, Maia, Gaia, and Vila do Conde via air express (DHL/FedEx/UPS), typically clearing customs at Francisco Sá Carneiro Airport (OPO) within 5 to 8 working days. Under DDP terms, our team manages all Portuguese import VAT, customs tariffs, and declarations—preventing customs delays at Portuguese customs.
How should we install titanium bolts into motorcycle aluminium crankcases to avoid galling?
Titanium can experience cold welding or thread galling when driven dry into aluminium or magnesium casing threads under high clamping torque. We advise applying a high-pressure molybdenum disulfide anti-seize paste or copper/nickel-based assembly lubricant to threads. Reduce dry torque specifications by 10% to 15% to achieve identical clamping preload without risking thread stretch.
Can you manufacture custom titanium axle bolts for vintage European builds?
Yes. Custom classic motorcycles popular in Northern Portugal (such as older Ducati, BMW Airhead, and vintage Japanese builds) frequently require non-standard pitches or unique head geometries. If you supply a 2D engineering drawing, 3D STEP file, or a physical sample shipped to our Baoji facility, our CNC turning department can replicate the exact component in Gr5 titanium with a production turnaround of 7-10 days.
What is the MOQ for Portuguese motorcycle tuning workshops?
Standard catalog items (such as DIN 6921 hex flange bolts and DIN 912 socket screws in standard lengths) maintain a minimum order quantity (MOQ) of only 20 to 30 pieces. Custom bespoke CNC machined bolts made directly to technical drawings generally start at 50 to 100 pieces per dimensional specification, accommodating both prototyping runs and continuous workshop replenishment.
Elevate Your Builds with Aerospace Titanium
Download our complete motorcycle technical specification sheet, torque charts, and wholesale pricing schedule tailored for Portuguese distributors, race teams, and performance ateliers.
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