Standard & Custom Titanium Fasteners for Spanish Industry
Manufactured from aerospace-grade ASTM B348 Grade 5 (Ti-6Al-4V) and Grade 2 titanium wire bar in Baoji, China. In stock for immediate dispatch to Barcelona, Valencia, Madrid, Bilbao, and Vigo.
OEM All Sizes M3-M20 Titanium Hex Nut Plain Finish Standard Parts in Stock
- Material: Gr2 / Gr5 Titanium
- Standard: DIN 934 / ISO 4032
- Lead Time: Stock Ready
High Quality GR5 Titanium Alloy Socket Head Class 8.8 CNC Machined Plain Finish
- Tensile: ≥ 895–950 MPa
- Drive: Hexagonal Socket
- Application: Chassis & Mechanical
DIN912 Titanium Hexagon Socket Head Cap Screws CNC Machined Corrosion-resistant
- Thread: Rolled Metric Coarse
- Finish: Plain / Electro-polish
- Density: 4.43 g/cm³
Motorcycle Titanium Bolts Hexagonal Step Flat Head Zinc Finish M8 Disc Brake
- Shoulder: Ground Precision Step
- Usage: Rotor & Caliper Pin
- Shear Strength: ≥ 520 MPa
Gr5 Ti 6Al 4V Titanium Alloy Flange Bolts PVD Anodized M6 M8 M22
- Colors: Gold, Burnt Blue, Black
- Flange: Integral Load-Spreading
- Certification: EN 10204 3.1 MTC
GR5 Titanium Screws Torx Round Head Bolts Fine Thread Metric Motorcycles
- Drive: Anti-Cam-Out T25/T30
- Weight: 44% Lighter vs Steel
- Fatigue Life: > 2.5 × 10&sup6; Cycles
GR5 Titanium Alloy Standard Bolts Factory Wholesale Ready to Ship Fasteners
- In Stock: > 50,000 Pcs
- Quality: 100% Optical Gauge Verified
- Incoterms: DDP, CIF, FOB Barcelona
M8 Titanium Torx Head Motorcycle Bolt Gr5 CNC Anodized PVD Star Screw
- Customization: Laser Logo & Step Thread
- Torque Rating: 18–22 N·m
- Finish: Hard PVD Titanium Nitride
Engineering Principles of Titanium Cantilever & V-Brake Post Fasteners
Cantilever post bolts, commonly known in the European bicycle and light-vehicle sector as brake boss studs, represent one of the most critical structural interfaces in classic and modern bicycle engineering. Tasked with handling multi-directional dynamic braking moments, cyclic fatigue shocks, and severe environmental salt exposure along Spain’s extensive coastal corridors, these components necessitate uncompromising metallurgical precision and rigorous engineering control.
Historically manufactured from chrome-plated mild steel or unannealed 7075-T6 aluminum alloys, traditional brake bosses have frequently presented severe failure modes in endurance cycling and cyclocross. Mild steel studs suffer from chronic galvanic oxidation, seizing permanently inside threaded braze-ons on chromoly (CrMo 4130) steel frames or carbon fork aluminum inserts. Conversely, 7075 aluminum studs exhibit low notched impact toughness and a susceptibility to stress corrosion cracking (SCC), often stripping under repetitive brake-arm cantilever leverage.
By implementing aerospace-grade Ti-6Al-4V (Grade 5 Titanium, UNS R56400 / Werkstoff 3.7165), Yevzo Titanium Metal Co., Ltd. re-engineers this critical hardware component. With a nominal tensile strength exceeding 895 MPa, a 44% reduction in specific gravity compared to structural alloy steel, and absolute chemical immunity to chloride-induced pitting (PREN > 40 equivalent), Grade 5 titanium cantilever post bolts represent the apex of mechanical reliability for Spanish boutique bike artisans, commercial fleet builders, and performance tuners alike.
44% lower mass than 8.8 steel studs, reducing critical unsprung weight.
ASTM B348 compliant alpha-beta titanium structural matrix.
Precision CNC ground post surface ensures zero brake-arm chattering.
Dense TiO&sub2; passivation layer resists Mediterranean sea salt.
Metallurgical Comparison: Fastener Alloys Under Dynamic Shear & Flexure
During high-speed deceleration on steep descents—such as the Pyrenean or Picos de Europa passes—cantilever and V-brake arms exert continuous outward cantilevered bending moments onto the mounting posts. A failure or micro-yielding in the post thread root or transition fillet leads instantly to catastrophic brake pad misalignment or frame seizure. Below is the metallurgical benchmark illustrating why Gr5 titanium is the premier choice for demanding European safety standards (EN ISO 4210-4).
| Mechanical & Physical Property | Ti-6Al-4V (Grade 5 Ti) | CP Grade 2 Titanium | Steel 8.8 (Zinc Plated) | 7075-T6 Aluminium |
|---|---|---|---|---|
| Minimum Tensile Strength (MPa) | 895 – 1,000 | 345 – 450 | 800 – 830 | 510 – 540 |
| 0.2% Offset Yield Strength (MPa) | 828 – 910 | 275 – 350 | 640 – 660 | 430 – 470 |
| Elastic Modulus (Young's, GPa) | 110 – 114 | 103 – 107 | 205 – 210 | 71 – 72 |
| Density (g/cm³) | 4.43 | 4.51 | 7.85 | 2.81 |
| Elongation at Break (%) | ≥ 10 – 15% | ≥ 20% | ≥ 12% | ≥ 8% |
| Chloride Resistance (Salt Spray ISO 9227) | > 3,000 hrs (No pitting) | > 3,000 hrs (Immune) | Rust appears < 96 hrs | Prone to exfoliation |
| Typical Thread Threading Method | CNC Turned + Rolled Profile | Cold Rolled | Cut / Die Rolled | Die Cut |
Micro-Geometry, Pivot Friction, and Thread Integrity
Unlike generic bolts, a cantilever post bolt possesses dual functional zones: the lower threaded shank (typically M8×1.25, M10×1.0, or M10×1.25) which anchors directly into frame bosses or suspension fork lower legs, and the upper smooth stepped cylindrical post (Ø7.98 ± 0.01 mm) upon which the brass or bronze bushing of the brake arm rotates.
Our manufacturing process in Baoji utilizes Swiss-type multi-axis CNC lathe centers that turn and burnish the pivot journal in a single clamping step. This eliminates eccentric runout (< 0.005 mm TIR) and yields a surface roughness of Ra ≤ 0.4 μm. With internal broached 6 mm hex sockets or precision external wrench flats, our bolts allow technicians to apply precise torque (5.5 to 7.0 N·m) without stripping the head drive or distorting the cantilever pivot axis.
Localized Industrial & Cycling Applications Across Spain
From custom frame workshops in the Basque Country to coastal gravel expeditions across Andalusia, our titanium cantilever fasteners deliver zero corrosion and surgical mechanical performance.
Bespoke Framebuilding (Basque Country & Catalonia)
Artisanal bike builders in Gipuzkoa, Álava, and Barcelona specialize in custom steel (Reynolds 853, Columbus Life) and titanium touring frames. Our M8/M10 Gr5 cantilever studs provide the exact stepped tolerance required for premium Paul Component, Mafac, or Shimano cantilever brake configurations, ensuring lifetime corrosion immunity without paint scratching.
Gravel & Cyclocross (Cantabria & Asturias)
Northern Spain's Atlantic climate subjects racing setups to dense mud, continuous rainfall, and frequent pressure washing. Our titanium cantilever post bolts prevent thread galling inside aluminum fork dropouts and carbon stays, resisting the destructive scour of gritty siliceous sand during grueling winter CX seasons.
Coastal Urban Fleets (Valencia & Mediterranean Basin)
Municipal bike shares and rental hubs in coastal cities like Valencia, Alicante, and Malaga suffer severe saline air corrosion. Replacing OEM steel brake boss bolts with Yevzo Grade 2/Grade 5 titanium hardware lowers maintenance overhead, eliminates seized hardware, and guarantees smooth brake caliper spring return.
Vintage V-Brake & Retro MTB Restorations
Spain possesses a flourishing market for restoring vintage 1990s mountain bikes (Klein, Cannondale, Marin, Kona). Our CNC-machined titanium post bolts match vintage thread pitches (including 5/16"-18 UNC and M10×1.25) with authentic anodized color accents (purple, gold, 3DV, burnt blue) that replicate retro aesthetics while offering modern aerospace integrity.
Motorcycle & Trial Custom Workshops (Madrid & Barcelona)
Spanish moto-trial and enduro teams require specialized stepped flat-head bolts, caliper pins, and disc brake fasteners. Our Gr5 Ti-6Al-4V stepped hardware withstands intense thermal gradients from high-friction braking while shaving reciprocating masses off front unsprung swingarms.
Endurance Bikepacking (Camino de Santiago Routes)
Bikepackers undertaking long-distance routes like the Camino Francés or the TransAndalus carry heavy rear panniers and demand fail-safe cantilever rack mounts. Titanium boss bolts double as high-capacity luggage mounting studs that resist fatigue failure under non-stop washboard vibrations.
Key Sourcing & Manufacturing Trends in the Spanish Market
Understanding shifting technical requirements and economic drivers empowers Spanish distributors and OEM purchasers to secure direct-factory price advantages.
Gravel Boom & Retro-Modding
Spain has emerged as Europe’s epicenter for gravel racing (e.g., Traka Girona, Badlands). Concurrently, a massive trend towards "retro-modding" classic 26-inch steel frames into modern 650b gravel tourers has sparked surging demand for replacement titanium cantilever boss posts that accommodate wide tire clearances without corrosion.
EU REACH & Galvanic Directives
Stricter environmental regulations within the European Union regarding toxic cadmium and hexavalent chromium surface treatments have accelerated the transition away from electro-plated steel hardware. Titanium naturally forms an unreactive oxide passivated surface, eliminating toxic heavy metal coatings while delivering superior chemical inertness.
Direct Sourcing from Baoji Titanium Valley
Spanish component brand owners and catalog distributors are increasingly bypassing expensive European secondary stockists. By sourcing directly from Baoji-based manufacturing facilities like Yevzo, Spanish importers reduce BOM costs by 30–45% while retaining full mill test certification (EN 10204 3.1) and custom CNC drawing flexibility.
Rooted in China's Titanium Valley Since 2013
Headquartered in the High-Tech Development Zone of Baoji, Shaanxi, Yevzo Titanium Metal Co., Ltd. sits at the heart of global titanium raw material refinement. Our fully integrated facility manages every conversion step: from raw ASTM B348 titanium billet inspection to multi-axis Swiss CNC turning, precision thread rolling, ultrasonic degreasing, and automated visual sorting.
Source Factory Direct
No intermediaries or trading markups. Directly manage production schedules with our metallurgical engineers from 2D/3D CAD drawings to finished packed bolts.
100+ Precision Machines
Equipped with 3-axis, 4-axis, and Swiss-type 5-axis CNC machining centers, high-speed thread-rolling units, and optical profile projectors for ±0.005 mm tolerances.
Complete Heat Traceability
Every batch is supplied with chemical composition and physical tensile test reports per EN 10204 3.1 standards. Complete batch trace from ingot to fastener.
Flexible Spain Logistics
Comprehensive delivery terms including DDP (Delivered Duty Paid to your warehouse in Madrid, Barcelona, Valencia), FOB, CIF, and express air service (DHL/FedEx 3–5 days).
Frequently Asked Questions for Sourcing to Spain
Essential technical, regulatory, and logistics answers compiled by our international export team for Spanish engineering teams and procurement directors.
What are the standard thread specifications for cantilever post bolts on European and Spanish frames?
Cantilever and V-brake post bolts generally use two primary shank thread standards:
- M8 × 1.25 mm: Found predominantly on rear frame stays of classical and modern chromoly, titanium, and carbon endurance gravel frames.
- M10 × 1.25 mm (Metric Fine): Standard on front suspension forks (RockShox, Manitou, Marzocchi) and larger frame bosses.
- M10 × 1.0 mm: Occasionally specified on boutique Italian and Spanish road/CX rigid forks.
The post journal diameter across all standard cantilever/V-brake arms is ground to Ø7.98 mm (+0 / -0.02 mm) to ensure smooth rotation without radial wobble. Yevzo manufactures all these variations and can customize boss step lengths according to your frame builder drawings.
How does Yevzo prevent thread galling (cold welding) between titanium post bolts and frame braze-ons?
Titanium has a relatively thin natural oxide layer that can rupture under high friction and contact pressure, leading to adhesive wear or thread galling when threaded dry into aluminum or steel. We solve this through two rigorous controls:
- Thread Rolling vs Cutting: Whenever feasible, our fastener threads are cold rolled rather than cut, resulting in continuous grain flow lines, a compressed root microstructure, and a mirror-like thread flank finish (≤ Ra 0.2 μm) that radically reduces thread-friction coefficients.
- Installation Chemistry: We supply all Spanish commercial clients with technical assembly documentation advising the application of an anti-seize compound containing copper, nickel, or MoS&sub2; (molybdenum disulfide). When installing into bare aluminum forks, an insulating titanium washer or specialized fluoropolymer barrier compound is recommended to avoid galvanic coupling in marine seaside environments.
What are the customs duties, TARIC codes, and VAT implications when importing titanium bolts into Spain?
When importing titanium fasteners from China into the Kingdom of Spain (European Union customs territory):
- Harmonized System (TARIC) Code: Typically classified under 8108.90.90 (Articles of titanium, other) or 7318.15.95 (Threaded fasteners, other).
- Customs Duty Rate: Generally ranges between 3.7% and 7.0% depending on exact end-use classification.
- Value Added Tax (IVA): Standard Spanish IVA is 21%, applied to the CIF customs valuation + duty.
Yevzo offers full DDP (Delivered Duty Paid) terms to Spain. Under DDP terms, our freight forwarder clears Spanish customs, pays all tariffs and import IVA directly, and delivers freight straight to your industrial premises in Madrid, Barcelona, Bilbao, or Valencia with zero administrative delay.
What is your Minimum Order Quantity (MOQ) for custom cantilever studs machined from technical drawings?
For standard catalogue cantilever post bolts (M8×1.25 / M10×1.25 in natural plain finish), our MOQ starts at just 20 to 50 pieces, making it practical for independent frame builders and high-end repair shops.
For fully bespoke OEM geometries (custom shoulder lengths, non-standard wrench flats, integrated cable-hanger steps, or proprietary thread pitches), the prototype batch starts at 100 pieces. Production scale runs of 500 to 10,000+ pieces benefit from tiered volume discounts.
Can you supply PVD anodized color finishes that match Spanish brand color palettes?
Yes. In addition to high-polish and plain satin machined titanium finishes, we operate in-house electrolytic anodizing and Physical Vapor Deposition (PVD) coating lines. Available colors include:
- Titanium Nitride (TiN) Gold: High surface hardness (> 2000 HV), exceptional wear resistance on sliding post journals.
- Burnt Blue / Electric Purple: Electrochemical oxide layers with deep iridescent luster.
- DLC / PVD Diamond Black: Ultra-tough low-friction carbon film ideal for stealth racing builds.
- Rainbow / Oil Slick: Distinctive multi-tone finish favored in the Spanish gravel and custom trial bike markets.
All coatings are chemically bonded and add less than 1.5 μm of surface thickness, ensuring zero interference with precision post-bearing tolerances.
Which mechanical test certificates and compliance documents are provided with export shipments?
With every production lot shipped to European and Spanish buyers, Yevzo provides:
- EN 10204 Type 3.1 Mill Test Certificate (MTC): Documenting spectroscopic chemical composition (Ti, Al, V, Fe, C, N, H, O content) and mechanical tensile/yield test results.
- Dimensional Inspection Protocol: Go/No-Go thread gauge reports, optical comparator pitch verification, and post journal diameter verification.
- RoHS & REACH Compliance Declarations: Verifying complete absence of restricted substances under EU regulations.
What is the typical transit duration from Baoji to Spanish industrial ports and airports?
We provide three flexible transit tiers to meet customer production deadlines:
- Air Express (DHL / FedEx / UPS): 3 to 6 working days from our factory directly to your doorstep anywhere in Spain. Ideal for prototypes, rush orders, and high-value small batches.
- Air Cargo (to BCN or MAD): 7 to 10 days for consolidated freight shipments over 100 kg.
- Ocean Freight (FCL/LCL to Valencia or Barcelona): 28 to 35 days for bulk containerized scheduled orders, offering the lowest transportation cost per unit.
Request a Direct Factory Quotation Today
Partner with Baoji’s dedicated titanium fastener manufacturing specialist. Upload your 2D/3D technical drawings or specify your required cantilever post bolt dimensions. Our engineering sales team will respond with a formal quotation and DDP delivery timeline within 24 hours.