PSSTI GR5 Titanium Gold Flange Head Bolts Round Head Bolts M7*27
- Grade:
- Aerospace Ti-6Al-4V
- Thread:
- M7 × 27mm Rolled
- Surface:
- PVD Vacuum Gold Film
Export Catalog
Precision-Engineered Racing Fasteners & Hardware
Tested under ISO 898-1 fatigue benchmarks and calibrated for ultra-high rotational dynamics, our GR5 titanium hardware ensures maximum clamping reliability with 44% rotational mass reduction.
GR5 Titanium Bolts M8*40mm Colored Cylinder Head Hex Socket Bolts
- Drive:
- Precision Hex Socket
- Dimensions:
- M8 × 40mm
- Yield:
- ≥ 828 MPa
GR5 Titanium Bolts M5*25mm Burn Blue Cup Head Hex Socket Bolts
- Standard:
- DIN 912 Compatible
- Finish:
- Thermal Burnt Blue
- Application:
- Chassis / Rotor Assembly
GR5 Titanium Bolts M8 M10 M12 CNC Machined Tapered Head Bolts
- Seat Type:
- 60° Conical / Tapered
- Machining:
- 5-Axis CNC Turned
- Standard:
- High-Torque Racing Spec
GR5 Titanium Bolts M6*70mm Factory Price Button Head Inner Hex Bolts
- Head:
- Low-Profile Button
- Length:
- 70mm Precision Shank
- Density:
- 4.43 g/cm³
GR5 Titanium Bolts M6*25mm Umbrella Flange Head Inner Torx Bolts
- Drive:
- Star Torx Anti-Camout
- Design:
- Broad Integrated Flange
- Origin:
- Baoji Verified Facility
GR5 Titanium Bolts M10*20mm Countersunk Head Hex Socket Bolts
- Profile:
- Flush Countersunk 90°
- Dimensions:
- M10 × 20mm
- Tolerance:
- ±0.02mm CNC Tolerance
GR5 Titanium Bolts M8*20mm Hex Flange Head Drilled Safety Bolts
- Feature:
- Drilled for Safety Wire
- Dimensions:
- M8 × 20mm
- Tensile:
- ≥ 895 - 1050 MPa
Geographic Application Matrix
Engineering GR5 Titanium Lug Nuts for Vienna & Lower Austria
From track days at the Red Bull Ring in Spielberg to punishing Alpine pass ascents and the de-icing salt slurry of Viennese winters, GR5 titanium provides unparalleled mechanical integrity.
Track Day Motorsport & GT3 Optimization
Automotive enthusiasts in Greater Vienna frequently challenge regional road-course circuits like the Red Bull Ring and Slovakia Ring. Wheel lug nuts endure cyclically elevated temperatures exceeding 600°C generated by carbon-ceramic and metallic race brake friction.
- Thermal Stability: Ti-6Al-4V maintains yield strength under brake heat soak, unlike soft 7075 aluminum nuts.
- Dynamic Moment of Inertia: Trimming rotating unsprung mass directly sharpens steering turn-in response around high-speed hairpins.
- Anti-Galling Hardness: PVD-coated threads withstand high-torque air-impact tool cycles during pit tire swaps.
Severe Alpine Winter & De-Icing Salt Immunity
Austrian municipal road agencies aggressively employ calcium chloride (CaCl&sub2;) and sodium chloride brines across Viennese arterial routes and mountain passes. Steel OEM lug bolts succumb to galvanic scaling and rust seizure.
- Self-Healing Passivation: An spontaneous titanium dioxide (TiO&sub2;) film guarantees 100% rust-free operation through deep alpine winters.
- Electrochemical Compatibility: Prevents bimetallic corrosion when clamped against forged monoblock forged alloy wheels.
- Zero Structural Embrittlement: Resists hydrogen embrittlement commonly induced by environmental acid rain and road chemicals.
Bespoke Tuning & Concours Aerodynamics
Vienna's distinguished tuning studios and exotic hypercar collectors require pristine optical aesthetics alongside TÜV-compliant structural load ratings for Porsche, Audi RS, BMW M, and Ferrari fitments.
- Color Fidelity: Vacuum physical vapor deposition (PVD) produces deep DLC black, burnt titanium iris, and true gold luster.
- Precision Tolerances: Head-to-shank runout held within ±0.01mm ensures zero high-speed balancing vibrations on the Autobahn.
- Multi-Seat Geometry: 60° Conical, Ball R13/R14, and flat washer configurations match custom forged wheel rims.
| Material Benchmark | Density (g/cm³) | Tensile Strength (MPa) | Yield Strength (MPa) | Corrosion Resistance | Track & Street Suitability |
|---|---|---|---|---|---|
| Navzo GR5 Titanium (Ti-6Al-4V) | 4.43 | 895 – 1050 | 828 – 910 | Impervious / Infinite Passivation | Optimal (Aerospace / GT3 Track Validated) |
| Class 10.9 Carbon Steel | 7.85 | 1040 | 940 | Poor (Requires zinc/cadmium plating) | Heavy / Corrodes under winter road brine |
| 7075-T6 Billet Aluminum | 2.81 | 572 | 503 | Moderate (Prone to stress cracking) | High Risk (Thermal creep under braking) |
| A2-70 Austenitic Stainless Steel | 7.90 | 700 | 450 | Good (Pitting in high-chloride salt) | Unsafe (Insufficient shear/yield for lugs) |
Market Intelligence
Emerging Automotive Engineering Trends in Austria
Analyzing the shift in technical demands across the Austrian aftermarket, boutique OEM builders, and precision motorsports sectors toward advanced structural titanium.
Electric Vehicle (EV) Unsprung Weight Purge
With performance EVs from regional Austrian hubs emphasizing kilowatt efficiency and rapid suspension damping, shedding unsprung mass at the wheel hubs delivers significant handling and range gains.
Stringent TÜV & (§57a Pickerl) Alignment
Vienna buyers require components that strictly maintain torque preload without thread stripping or shear fatigue. Rolled threads and standardized Class 6g tolerances are now mandatory prerequisites.
Direct-to-Hub Stud Conversion Kits
Austrian track workshops are rapidly moving away from awkward OEM wheel bolts toward permanently seated GR5 bullet-nose titanium studs paired with open-ended racing lug nuts for fast wheel changes.
Supply Chain Onshoring to Verified Hubs
Austrian procurement teams prioritize vetted manufacturers in Baoji with documented raw material mill certs, rejecting generic brokers in favor of traceable Ti-6Al-4V supply lines.
Manufacturing Capability
Why Vienna Engineers Choose Navzo Precision Titanium
Headquartered on Yucai Road within Baoji's High-tech Industrial Development Zone, Navzo leverages deep titanium supply lines to deliver precision fasteners with peerless metallurgical integrity.
Direct Baoji Raw Material Integration
Baoji accounts for China's core titanium sponge and bar processing. Navzo procures 100% vacuum-arc-remelted (VAR) Ti-6Al-4V bars directly, offering mill test reports with full ultrasonic flaw testing and chemical spectrometry.
Full In-House Cold Heading & CNC Milling
Unlike basic machine shops, our facility integrates cold heading for high-density grain structure, 5-axis CNC turning centers, and thread-rolling equipment that compresses the grain lines rather than cutting them.
Stringent Inspection & European Verification
Every lug nut batch is screened for concentricity, pitch diameter, micro-hardness, and surface finish. On-site verified premises, continuous export history across DACH markets, and an average response time under 1 hour.
Engineering Note: Thread Rolling vs. Thread Cutting
For wheel lug nuts and studs subjected to intense rotational shear and axial pre-loads up to 140 Nm, cut threads introduce dangerous micro-notches where fatigue fractures originate. Navzo exclusively utilizes cold thread rolling dies on all GR5 fasteners. This process plastically deforms the titanium crystal lattice along continuous unbroken flow lines, boosting thread fatigue lifespan by more than 300% under high cyclic track loads.
Procurement FAQ
Frequently Asked Questions by Vienna Automotive Importers
Key technical, metallurgical, logistics, and compliance considerations when importing racing wheel hardware from China to Austria.
What thread pitch and seat profiles do you stock for European sports cars?
We manufacture all standardized European fitments including M12×1.25, M12×1.5, M14×1.25, and M14×1.5. Seating geometry includes 60° standard conical/tapered seats (aftermarket BBS, OZ Racing), R12/R13/R14 ball radius seats (OEM Porsche, Audi, VW, Mercedes), and floating washer variations engineered to prevent wheel rim scratching during torque sequence.
How do GR5 titanium lug nuts withstand Austrian road salts and winter grit?
Grade 5 titanium forms an instantaneous, inert titanium oxide film upon atmospheric exposure. Unlike steel, which pits and rusts when exposed to calcium chloride (CaCl&sub2;) sprayed across Vienna highways and Alpine roads, titanium remains completely immune to chemical pitting, crevice oxidation, and rust seizure across decades of winter exposure.
Is thread galling a concern, and what torque settings should Viennese workshops apply?
Titanium-to-steel or titanium-to-aluminum interfaces can gall under dry high-speed torque installation. We recommend applying a light coating of copper-based or nickel-based anti-seize paste, or specifying our PVD-coated finishes which reduce friction coefficients. Torque settings should match vehicle OEM torque specs (typically 120–140 Nm for M14 automotive applications); pneumatic impact wrenches should be dialed down, finishing with an accurate torque wrench.
What documentation is included for Austrian import clearance and TÜV inspections?
Every shipment is accompanied by a comprehensive EN 10204 Type 3.1 Mill Test Certificate (MTC) detailing exact chemical composition (Al 5.5-6.75%, V 3.5-4.5%, Fe ≤0.40%, O ≤0.20%, Ti balance), tensile strength, yield rating, and elongation percentage. Optical profile projector reports and ultrasonic non-destructive test documentation can be provided per batch.
Can custom branding, knurling, and open/closed end caps be manufactured?
Yes. Navzo specializes in OEM and ODM custom engineering. We produce extended 45mm/48mm open-ended racing lug nuts, closed-end anti-dirt acorn designs, aggressive perimeter hand-grip knurling for quick tire crew spins, and high-precision laser-etched logos or custom thread pitch stamps to your STEP/DWG drawings.
What are the shipping options and transit lead times from Baoji to Vienna, Austria?
For urgent sample evaluations or racing season deadlines, express air couriers (DHL, FedEx, UPS) deliver directly to Vienna International Airport (VIE) or your workshop address within 4 to 7 business days. For bulk commercial distributor replenishment, air cargo consolidations or rail-freight connections via the Eurasian logistics corridor offer dependable cost efficiency.
Upgrade Your Wheel Hardware with Factory-Direct GR5 Titanium
Partner directly with Baoji’s dedicated titanium manufacturer. Send us your wheel bolt/nut dimensions, thread pitches, seat drawings, or custom racing specs for a factory quotation delivered within 1 hour.