Gr5 Ti6Al4V
Customized Gr5 Titanium Bolt Colorful Rainbow Hex Socket Torx Motorcycle Screw
PVD Rainbow · Anti-Seize Anodizing · M6-M10
Engineered Fasteners & Hardware
Precision Titanium Nuts & Assemblies Selection
Factory-direct Grade 5 (TC4) titanium nuts, locking studs, and custom multi-axis CNC machined components built strictly to DIN, GB, and ISO aerospace-grade tolerances for export to Jakarta, Surabaya, and industrial centers across Indonesia.
12-Point Flange
Polished CNC Machined Gr5 Titanium 12 Points Hex Flange Nuts & Bolts
DIN / GB Standards · High Clamping Load · M6-M14
Wheel Flange
M6x30 M6x35 GR5 Hex Head Titanium Wheel Flange Bolts for Motorcycle
High Fatigue Strength · Mirror Polish · Grade 5
CNC Hex Nut
Titanium CNC Machined Hex Nut Turnbuckles M14x1.5 DIN Standard
Silver Plated / Micro-Finished · Precision Metric
Split Rim
M7 X 24 M7X32 Titanium Mushroom Head Split Rims Screw 12-Point DIN
Automotive Mod Wheel Fastener · Mirror Polish
Thermal Stud Kit
Titanium M8x1.25x55mm Exhaust Manifold Stud Kit GR5 Racing Spec
Anti-Oxidation · Copper-Coated Locking Nuts
Flat Head Flange
Gr5 Titanium Alloy Flat Head Hex Flange Bolts M8 Polished Finish
Motorsport Racing Sports · Tensile ≥ 950 MPa
Cylinder Studs
TI Cylinder Head Studs & 12 PT Nut Kit Set DIN Standard M12/M14
Aerospace Structural Class · High Tensile Clamping
Engineering Whitepaper & Metallurgical Review
Why Titanium Nuts Outperform Stainless Steel in Indonesian Marine & Heavy Industries
A definitive evaluation of pitting resistance equivalence (PREN), galvanic isolation, thermal cycling resilience, and strength-to-weight optimization in tropical, high-humidity archipelago environments.
Material Performance Under Tropical Maritime Conditions: The Crevice Corrosion Challenge
Procurement engineers in Indonesia operating across coastal shipyards in Batam, offshore drilling platforms in the Natuna Sea, and chemical processing facilities in Cilegon face continuous hardware degradation due to aggressive chloride-laden humidity. Traditional fasteners fabricated from standard AISI 304 or even 316 austenitic stainless steel succumb rapidly to pitting corrosion, crevice attack, and chloride-induced stress corrosion cracking (SCC) under sustained thermal loads exceeding 35°C combined with 85%+ relative humidity.
Vunza’s Grade 5 (Ti-6Al-4V) and Grade 2 commercially pure titanium nuts establish an impervious, self-regenerating titanium dioxide (TiO2) passivation film spontaneously upon surface exposure to air or moisture. This biological and metallurgical barrier delivers near-infinite immersion resistance in seawater, brine slurries, and industrial hydrogen sulfide (H2S) vapors. Titanium fasteners exhibit a pitting resistance that renders routine replacement cycles obsolete, drastically reducing Total Cost of Ownership (TCO) for offshore mining barges, coastal nickel smelters, and tropical maritime operations.
| Fastener Material Grade | Density (g/cm³) | Tensile Strength (MPa) | Yield Strength (MPa) | Seawater Corrosion Rate (mm/year) | PVD / Color Anodizing Compatibility |
|---|---|---|---|---|---|
| Titanium Grade 5 (Ti-6Al-4V) | 4.43 | ≥ 895 – 1050 | ≥ 828 | < 0.0001 (Immune) | Full Spectrum (Gold, Blue, Purple, Rainbow) |
| Titanium Grade 2 (CP-Ti) | 4.51 | ≥ 345 – 480 | ≥ 275 | < 0.0001 (Immune) | Excellent Chemical Passivation |
| Stainless Steel 316L (Marine) | 8.00 | 580 | 290 | 0.025 – 0.050 (Pitting Prone) | Limited Chemical Immersion Colors |
| Alloy Steel Grade 10.9 | 7.85 | 1040 | 940 | > 0.500 (Severe Rusting) | Requires Zinc / Cadmium Plating |
Localized Industrial Applications
Where Our Titanium Nuts & Fasteners Excel Across Indonesia
Two-Wheeler Racing & Motorcycle Mod Culture
Indonesia represents Southeast Asia's most vigorous two-wheeler market, where racing circuits in Sentul and Mandalika drive massive demand for lightweight unsprung components. Our Gr5 titanium hex flange nuts, Torx sprocket fasteners, and colorful rainbow anodized wheel studs strip up to 45% of critical rotational weight from Yamaha, Honda, and Kawasaki racing platforms while resisting the damp tropical track conditions.
Shipbuilding & Offshore Exploration (Batam & Natuna)
In shipyards throughout Riau Islands and marine maintenance hubs along the Java Sea, stainless steel nuts frequently gall and freeze due to galvanic oxidation with dissimilar metals. Vunza’s CNC titanium nuts and silver-plated turnbuckles ensure seamless assembly, zero-galling maintenance, and perpetual resistance against tidal submersion and high-salinity spray.
Nickel Smelting & Geothermal Plants (Sulawesi & Java)
Indonesia is home to global nickel supply processing hubs in Morowali and vast geothermal fields across Java and Sumatra. High concentrations of sulfuric acid, abrasive slurry, and geothermal steam rapidly dissolve conventional structural bolts. Our Grade 5 studs and flange nuts withstand continuous operating temperatures up to 400°C without loss of structural elasticity.
Market Foresight & Regional Growth
Emerging Trends Reshaping Indonesia's Titanium Fastener Demand
Understanding macro shifts in Indonesia's industrial downstreaming (Hilirisasi), motorsport expansion, and electric mobility transition.
1. Downstream Nickel Processing & Chemical Autoclaves
With the Indonesian government mandating on-shore ore processing, High-Pressure Acid Leach (HPAL) facilities require immense volumes of corrosion-immune hardware. Titanium nuts and studs are transitioning from luxury alternatives to baseline maintenance standards for valve assemblies, agitation tanks, and pipeline flanges handling high-concentration sulfuric acid.
2. The Explosion of Premium EV & Scooter Customization
Urban lifestyle shifts in Jakarta, Bandung, and Bali have generated immense enthusiasm for motorcycle personalization. Consumers seek distinctive PVD rainbow, burned blue, and mirror-gold titanium hex nuts for swingarms, calipers, and suspension links. Custom aesthetic appeal combined with genuine weight savings makes Vunza’s Grade 5 hardware a high-margin product for domestic distributors.
3. Stringent Infrastructure & Green Energy Mandates
Indonesia's capital relocation to Nusantara (IKN) and vast expansion of offshore solar arrays over lake reservoirs demand construction components with a 30+ year maintenance-free design life. Titanium structural nuts and anchoring bolts provide superior fatigue life and resistance against seismic tremors and biological fouling compared to coated carbon steel.
Verified Baoji Manufacturer Since 2008
Enterprise Excellence From China's Titanium Valley
Located adjacent to the world-renowned Baoti Group Industrial Park in Baoji, Shaanxi, Vunza Titanium Industry Co., Ltd. has spent over 15 years mastering the specialized science of titanium CNC precision machining and custom cold-heading / thread-rolling fabrication.
Unlike trading intermediaries, Vunza controls the entire manufacturing journey: from certified raw titanium sponge melting to vacuum forging, multi-axis precision machining, thread rolling, micro-finishing, and automated optical batch sorting. With over 50% of our floor technicians commanding 13+ years of specialized titanium machining experience, we achieve tolerances down to 0.005 mm.
15+
Years Since 2008
34 Sets
Multi-Axis CNC
0.005mm
Ultra Tolerance
5.0/5.0
Buyer Satisfaction
Procurement Intelligence
Frequently Asked Questions by Indonesian Importers & Engineers
Clear, authoritative answers addressing import tariffs, shipping logistics to Tanjung Priok / Tanjung Perak, material certifications, and custom fabrication protocols.
What are the key advantages of Grade 5 (Ti-6Al-4V) over Grade 2 for industrial nuts?
Grade 2 is unalloyed commercially pure titanium providing superior ductility and extraordinary corrosion resistance, making it ideal for low-pressure chemical piping, marine exhaust baffles, and cathodic protection hardware. Grade 5 (Ti-6Al-4V) contains 6% aluminum and 4% vanadium, producing an alpha-beta crystalline structure with tensile strength exceeding 895–1050 MPa. Grade 5 is essential for structural motorcycle suspension nuts, engine cylinder head studs, and heavy equipment flanges that experience high dynamic shear and cyclic fatigue loads.
How does Vunza prevent galling and cold welding during high-torque installation?
Titanium has a natural tendency to gall when torqued against similar titanium or stainless surfaces without proper lubrication. To eliminate this issue for Indonesian technicians, Vunza provides specialized surface treatments including micro-arc oxidation, anti-galling PVD coatings, silver-plating on inner threads (per aerospace MIL specs), and dry-film molybdenum disulfide lubricants. Furthermore, we always advise applying a quality nickel- or copper-based anti-seize paste during field assembly.
What documentation accompanies bulk shipments to Indonesia for customs clearance?
Every shipment exported to Indonesian ports (Jakarta Tanjung Priok, Surabaya Tanjung Perak, or Batam) includes an EN 10204 3.1 Mill Test Certificate detailing exact chemical composition (Fe, C, N, H, O, Ti contents) and mechanical tensile testing results. We also furnish Certificates of Origin (Form E under ASEAN-China Free Trade Agreement for tariff reduction / exemption), commercial invoices with correct HS Codes (7318.16 for nuts / 8108.90 for titanium articles), packing lists, and pre-shipment dimensional inspection sheets.
What is your Minimum Order Quantity (MOQ) and lead time for custom drawings?
For standard DIN/ISO hex nuts, flange locking nuts, and motorcycle screw series kept in inventory, MOQ is as low as 100 to 300 pieces. For custom CNC components manufactured to your 2D/3D CAD drawings (STEP, IGES, DXF, or PDF), prototype batch samples can be produced within 7 to 10 working days. Batch production runs typically ship within 18 to 25 days depending on the complexity of PVD anodizing or laser branding.
Can Vunza provide custom laser marking and bespoke PVD color finishes for local brands?
Yes. We partner extensively with aftermarket motorcycle brands, tuning workshops, and distribution brands across Indonesia. We offer high-definition fiber laser marking for your custom logo, part number, or torque rating directly on the nut flange. Color finishes include vacuum PVD rainbow (chameleon), burnt titanium blue, 24K mirror gold, emerald green, and DLC (Diamond-Like Carbon) deep black with uniform surface hardness.
How does Vunza guarantee material traceability from raw titanium sponge to finished hardware?
We adhere strictly to ISO 9001 certified manufacturing protocols. Each batch of titanium raw bar stock originates from certified aerospace vacuum arc remelting (VAR) ingots traceable to the primary sponge batch number. Before precision turning or thread rolling, material chemistry is confirmed via optical emission spectrometers. In-process go/no-go gauges check internal thread pitch diameters every 30 minutes, ensuring 100% thread engagement reliability.