Deemount M5x10mm GR5 Grade Titanium T25 Torx Polished Finish Brake Rotor Bolts
Grade: Gr5 Ti-6Al-4V | Torx T25 Drive | Mirror Polished
0.005mm
CNC Machining Accuracy
34Sets
3/4/5-Axis CNC Fleet
44%Less
Unsprung Weight vs. SCM435
≥895MPa
Tensile Yield Strength
Direct Production Matrix
Featured Titanium Fasteners & Racing Hardware
Directly serving tuning workshops, racing constructors, and automotive parts distributors across Kyoto Prefecture and the wider Kansai hub with high-purity titanium wheel solutions.
1/4-20 X 5/8" GR5 Titanium Alloy TORX Head Caliper Mount Bolts CNC Turned
Thread: Imperial 1/4-20 | PVD Finish | Minghai Brand
Factory Supply Gr5 Ti6AI4V M14 X 1.5 8mm Hole Titanium Hex Anodized Wheel Nuts
Fitment: M14x1.5 / M12 | Anodized Custom Hue | Racing Grade
M6x16mm GR5 Titanium Alloy Disc Head Bolts PVD Finish Torx Screws
Application: Chain Guard / Bodywork | Anti-Galling PVD
CNC Machined Milling Gr5 Titanium Alloy Inboard Brake Rotor Sprint Race
Model: MH-125889 | High-Heat Dissipation | Polished
Minghai MH-001 Titanium Grade 5 PVD 12-Point Exhaust Stud Kit M8 X 1.25
Includes: Studs, 12-Pt Flange Nuts & Washers | Thermal Lock
Titanium Wheel Bolts M14 DIN Standard Torx Nitride Black Finish for Ferrari
Process: CNC Milling/Turning | Black Nitride Anti-Wear Layer
Titanium CNC Machined Hex Nut Turnbuckles M14x1.5 DIN Metric Inch
Standard: DIN Standard | Model: MH-screw-013 | Silver Plated
Engineering Metallurgy Whitepaper
Why Ti-6Al-4V Grade 5 Outperforms Traditional Lug Fasteners
Rotational inertia, thermal expansion dynamics, and shear strength characteristics in motorsport wheel stud conversions.
Unsprung Rotational Mass Reduction
In high-velocity cornering scenarios common to Japanese mountain passes (Touge) and Kansai racetracks, lowering unsprung rotational mass by 44% significantly enhances suspension damping response, reduces gyroscopic steering resistance, and optimizes wheel acceleration and braking cadence.
Rolled Threads vs. Cut Threads
Unlike budget aftermarket fasteners produced via standard thread cutting, Vunza wheel studs utilize precision thread-rolling technology under controlled feed rates. This compacts the crystal grain boundaries along the thread contour, dramatically improving fatigue life under continuous lateral G-force cycles.
Anti-Galling Physical Vapor Deposition
Titanium naturally experiences microscopic galling against hub interfaces if torque tolerances fluctuate. Our studs and lug nuts undergo proprietary PVD Nitride coating, reducing the friction coefficient to 0.15–0.20, stabilizing clamping force during repeated paddock wheel changes.
| Mechanical Parameter | Vunza Gr5 Ti-6Al-4V | SCM435 Chromium-Molybdenum | A3 Commercial Mild Steel |
|---|---|---|---|
| Specific Density (g/cm³) | 4.43 (Ultra-lightweight) | 7.85 (Heavy) | 7.85 (Heavy) |
| Tensile Strength (MPa) | ≥ 895 – 1050 | 930 – 1080 | 400 – 500 |
| Yield Strength (MPa) | ≥ 828 | ≥ 785 | ≥ 235 |
| Corrosion Resistance | Immune to salt, humidity, de-icing brine | Requires sacrificial zinc/cadmium plating | Rapid surface rust oxidation |
| Thermal Expansion Coeff. (10⁻⁶/K) | 8.6 (High dimensional stability) | 11.7 | 12.0 |
Regional Deployment
Localized Application Scenarios in Kyoto Prefecture
Engineered for the demanding operational parameters of motorsport tuners, restoration masters, and precision industries across Kyoto.
Suzuka & Central Circuit Racing Programs
Racing outfits based throughout Kyoto (Fushimi-ku, Minami-ku) frequently run customer cars at Suzuka International Circuit and Hyogo's Central Circuit. Our extended titanium conversion studs (M12x1.25, M12x1.5, M14x1.5 to M14x1.25) provide rapid pneumatic wheel transitions and maintain reliable torque under extreme hub brake disc radiant heating.
Tamba & Sea of Japan Severe Winter Protection
In northern Kyoto (Fukuchiyama, Maizuru, and Miyazu), mountainous winters feature aggressive calcium chloride anti-icing road sprays. Carbon steel hardware readily seizes and corrodes. Vunza Gr5 fasteners possess a tenacious, self-healing titanium oxide passivation film ($TiO_2$) that prevents galvanic corrosion with forged alloy rims.
Connoisseur Restomod & JDM Precision Tuning
Kyoto houses some of Japan's most fastidious boutique automotive restoration craftsmen, specializing in bespoke Skyline GT-R (BNR32/34), NSX (NA1/NA2), and European imports. Our mirror-polished or flame-anodized burnt titanium open-ended lug nuts meet the highest standards of Japanese show aesthetics and functional track duty.
Market Trends
Emerging Sourcing Dynamics in Kyoto's Precision Sector
Strategic shift from traditional domestic machining subcontractors toward certified direct titanium manufacturers.
Mitigating the Weak Yen via Direct Supply
Kyoto importers and distributors face compressed margins when purchasing through multi-tiered Japanese trading conglomerates (Shosha). Direct OEM procurement from Vunza's factory eliminates broker surcharges, delivering Tier-1 aerospace-grade titanium hardware at realistic volume wholesale prices.
EV & Hybrid Lightweighting Requirements
With electric platforms (e.g., modified Tesla Model 3s and high-torque hybrid race builds) dominating regional developmental focus, reducing peripheral rolling mass is essential to balance high battery pack curbs. Lightweight titanium wheel assemblies provide an immediate 1.5 kg to 2.8 kg rotational weight savings per vehicle.
JIS & Strict Shaken Safety Compliance
Japanese periodic roadworthiness vehicle inspections (Shaken) enforce zero tolerance for cracked, corroded, or ill-fitting wheel retainers. Our certified concentricity (< 0.005 mm) and verified raw titanium chemistry assure Japanese workshops of seamless Shaken acceptance.
Baoji Manufacturing Excellence Since 2008
Headquartered in the Gaoya Village Industrial Zone adjacent to the Baoti Group Industrial Park in Baoji—globally recognized as "China's Titanium Valley"—Vunza Titanium Industry Co., Ltd. is a verified, fully integrated manufacturer uniting metallurgical R&D, precision 5-axis CNC machining, custom finishing, and direct worldwide distribution.
We provide full drawing customization (2D CAD / 3D STEP), supporting non-standard thread pitches (M14x1.25, M14x1.5, M12x1.25, 1/2-20, 5/8"), knurled stud press-fit shanks, and bespoke laser-etched OEM branding for Kyoto speed shops.
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Procurement Directives
Frequently Asked Questions by Japanese Sourcing Teams
Clear, technically rigorous answers regarding metallurgy, shipping to Kyoto, and custom fabrication.
What specific titanium alloy grade is utilized for wheel studs and lug nuts?
We strictly employ certified aerospace-grade Ti-6Al-4V Grade 5 (TC4). We never utilize commercially pure Grade 2 titanium for wheel retention components due to its lower tensile capacity. Every batch is supplied with EN 10204 3.1 Mill Test Certificates verifying chemical composition (6% Aluminum, 4% Vanadium, balance Titanium) and mechanical yield ratings exceeding 828 MPa.
How do you prevent thread galling between titanium lug nuts and titanium or steel studs?
Titanium's natural oxide layer can cause cold-welding (galling) under high torque if friction is unmanaged. We address this through two production methods: (1) ultra-precision rolled threads with surface finish down to Ra 0.4 µm, and (2) functional PVD (Physical Vapor Deposition) coatings including Nitride Black, DLC, or specialized micro-thin dry-film lubricants that guarantee consistent torque-tension curves over repeat installations.
Can you manufacture custom lug nuts tailored to aftermarket JDM wheel seats (60° conical, ball seat, or flat mag)?
Yes. Japanese wheels from brands such as RAYS Volk Racing, SSR, and Work Wheels typically require precise 60° conical taper seats, while European vehicles (Porsche, Ferrari) utilize spherical ball seats (R12, R13, R14). We custom CNC-turn wheel studs and lug nuts matching your exact seat interface, total shank length, thread pitch, and open/closed end preferences.
What are the logistics, shipping times, and import duties to Kyoto, Japan?
Express air consignments (via DHL, FedEx, or SF Express) take approximately 3 to 5 business days from our Baoji facility to Kansai International Airport (KIX) or directly to business addresses in Kyoto. For volume wholesale orders, LCL maritime freight routes to Kobe or Osaka port take 7 to 10 days. We provide commercial invoices, packing lists, and Certificates of Origin for smooth clearance under RCEP tariff concessions.
What is your Minimum Order Quantity (MOQ) for custom brand-etched wheel hardware?
For custom-machined wheel studs and lug nuts built to proprietary 2D/3D customer drawings, our standard production MOQ is typically 100 to 300 pieces (enough for 5 to 15 vehicle sets). Prototype sample sets are provided for initial fitment trials, dimensional verification, and dynamometer/track testing prior to full commercial batch runs.
What torque values should be applied to Vunza titanium wheel studs compared to OEM steel?
Because Grade 5 titanium has a different elastic modulus and friction coefficient than standard SCM435 steel, we provide engineered torque reference sheets with each shipment. Generally, when using anti-seize paste on un-coated titanium, torque is calibrated around 105–115 Nm for M12 threads and 135–145 Nm for M14 threads. Always use hand-calibrated torque wrenches; impact guns are strictly discouraged.
Request an Engineering Review & OEM Quote
Send your 2D/3D technical drawings (STEP, IGES, DWG) or OEM sample specifications. Our senior machining engineering team provides DFM evaluations and wholesale price matrices within 9 business hours.
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