What is the difference between Grade 2 and Grade 5 titanium bolts?

Grade 2 is commercially pure titanium with a minimum tensile strength of about 345 MPa. It offers excellent corrosion resistance and formability for chemical and marine hardware. Grade 5 (Ti-6Al-4V) is an alpha-beta alloy with a minimum tensile strength of about 895 MPa per ASTM B348. It is the standard choice for automotive, motorcycle, cycling, and other load-bearing fasteners.

What is the minimum order quantity for custom titanium fasteners?

Most catalogue titanium bolts and nuts start at 10 to 30 pieces. Some standard hex nuts and motorcycle dress-up bolts start at 100 to 200 pieces. Drawing-based custom parts are quoted case by case.

Can you anodize titanium bolts in custom colors?

Yes. Titanium fasteners can be supplied with a plain machined finish or a polished finish. They can also be anodized in colors such as gold, blue, purple, burnt (rainbow), and black. Anodizing does not add significant thickness to the thread.

Which trade and payment terms do you accept?

Accepted delivery terms include FOB, CFR, CIF, EXW, FCA, CPT, DDP, DDU, and express delivery. Accepted payment methods include T/T, L/C, D/P, D/A, PayPal, credit card, Western Union, and escrow. Payments can be made in USD, EUR, GBP, JPY, and other major currencies.

How do I prevent galling and galvanic corrosion with titanium bolts?

Apply a titanium-compatible anti-seize compound to the threads before assembly. Tighten to the torque values recommended for titanium rather than steel. When titanium is fastened into aluminium or magnesium in wet environments, use isolating washers or coatings to reduce galvanic corrosion.

ISO 9001:2015 & CE Certified Metallurgy

CE Certified Titanium Stem Bolts Manufacturer & Exporters in the Daejeon Market

Precision CNC Machined Grade 5 (Ti-6Al-4V) Fasteners, Rolled Threads, and Ultra-Light Structural Connectors Engineered for Daedeok R&D Clusters, Robotics Laboratories, and High-Performance E-Mobility Assemblies.

Featured Industrial & Precision Mobility Titanium Fasteners

Factory-direct Grade 5 titanium bolts engineered to strict DIN, ISO, and CE machinery compliance parameters. Standard lots are ready to ship with full chemical and mechanical lot traceability for rapid clearance in South Korean manufacturing hubs.

In Stock

GR5 Titanium Alloy Standard Bolts Factory Wholesale

GR5 Titanium Alloy Standard Bolts in Stock Factory Wholesale Price Ready to Ship Titanium Fastener Bolts and Nuts

MaterialTi-6Al-4V Grade 5
Tensile Strength≥ 895–950 MPa
Thread Class6g / Rolled Precision

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Anodized

Anodized High Strength GR5 Titanium Alloy M6*15 Umbrella Head Bolts for Motorcycle Modification

Head GeometryLow-Profile Umbrella
FinishType II Anodized Blue/Gold
ApplicationAerodynamic Fairings

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E-Bike Stem DIN912 M6 Burnt Blue Titanium Socket Head Cap Screw

DIN912 M6 Burnt Blue Titanium Socket Head Cap Screw for EBike GR5 Titanium Alloy Titanium Bolts

StandardDIN 912 / ISO 4762
Thermal TreatmentVacuum Stress-Relieved
Primary UseE-Mobility Stem Clamps

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Micro-Thread Titanium Bolts with Flat Head Screws M1.6 Thread

Titanium Bolts with Flat Head Screws Zinc Finish M1.6 Thread Industrial Grade for Motorcycle and Bicycle

DimensionM1.6 Micro-Turned
Tolerance±0.005 mm Precision
Corrosion ClassC5-M Ultra Extreme

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Countersunk DIN7991 Titanium Countersunk Hexagon Flat Head Bolts

Available Immediately Titanium Bolts DIN7991 Titanium Countersunk Hexagon Bolt High Strength Flat Head Screw M3 M4 M5

StandardDIN 7991 / ISO 10642
DriveHexagon Socket / Flush
ApplicationRobotics Joint Mounting

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Class 8.8+ DIN912 Titanium Hexagon Socket Head Cap Screws CNC Machined

DIN912 Titanium Hexagon Socket Head Cap Screws Class 8.8 CNC Machined Corrosion-resistant Plain Finish (M0.8-M24)

Size MatrixM0.8 through M24
SurfaceElectropolished / Plain
Equivalent RatingExceeds ISO 898-1 8.8

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Torx Drive Titanium Alloy Bolts Gr5 Anodized Colored Torx Bolts

Titanium Alloy Bolts Gr5 Anodized Colored Torx Bolts M4 M5 M6*15 Motorcycle Modified Car Shell Titanium Screws

Drive TypeHigh-Torque T25 / T30
Vibration Res.Anti-Cam-Out Geometry
CoatingInterference Anodization

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OEM Custom Wholesale GR5 DIN912 Titanium Hex Socket Bolts Custom Size

Wholesale GR5 DIN912 Titanium Hex Socket Bolts Custom Size Titanium Screws Industrial & Motorcycle Fastener

CustomizationDrawing / 3D CAD to Spec
Batch VolumeRapid Prototype to Bulk
ComplianceCE Machinery Directive

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895+ MPa

Minimum Tensile Strength

-44.5%

Mass vs. Steel Fasteners

2.5×10⁶

Fatigue Threshold Cycles

100%

Optical & Go-NoGo Checked

Engineering White Paper: Metallurgical Superiority of Ti-6Al-4V Grade 5 Stem Fasteners

Mechanical hardware failure in high-frequency vibrational dynamic assemblies stems from cyclic shear fatigue, root notch stress concentration, and micro-fretting corrosion. Yevzo Titanium reengineers traditional clamping physics by combining aerospace Ti-6Al-4V metallurgy with cold-formed thread profiles.

Alpha-Beta Phase Microstructure

Grade 5 titanium (UNS R56400 / ASTM B348) is an alpha-beta alloy featuring 6% aluminum to stabilize the alpha phase and 4% vanadium to stabilize the beta phase. This balanced dual-phase crystalline lattice provides an optimal combination of high tensile modulus (114 GPa), crack propagation resistance, and extreme notch ductility under dynamic loads.

Cold Thread Rolling Dynamics

Rather than conventional single-point cutting or abrasive machining that severs the continuous metallic grain fibers, Yevzo titanium bolts utilize planetary cold thread rolling dies. This induces critical surface compressive residual stresses, densifies the thread root radius, and doubles operational shear fatigue life beyond 2.5 million alternating load cycles.

CE Machinery Directive Harmonization

To support Daejeon export manufacturers serving the European Union, our stem bolts fulfill all material conformity requirements under Directive 2006/42/EC and cycling steering assembly safety benchmarks under EN ISO 4210-5. Complete EN 10204 3.1 chemical and mechanical inspection certificates are generated per heat batch.

Material Matrix: Ti-6Al-4V Grade 5 vs. Structural Competitor Alloys

Standard: ASTM B348 / ISO 898-1

Physical & Mechanical Parameter	Ti-6Al-4V Grade 5 (Yevzo)	Stainless 316L (A4-80)	Alloy Steel Class 10.9	Alloy 7075-T6 (Aluminum)
Density (ρ)	4.43 g/cm³	8.00 g/cm³	7.85 g/cm³	2.81 g/cm³
Yield Strength (R_p0.2)	≥ 828–860 MPa	600 MPa	900 MPa	505 MPa
Ultimate Tensile Strength (R_m)	≥ 895–980 MPa	800 MPa	1040 MPa	572 MPa
Strength-to-Weight Ratio	212 kN·m/kg	100 kN·m/kg	132 kN·m/kg	203 kN·m/kg
Fatigue Limit (σ_b at 10⁷ cycles)	510 MPa	280 MPa	420 MPa	160 MPa
Atmospheric & Salt Spray Life	Immune (Titanium Dioxide TiO₂)	Susceptible to Crevice Rust	Severe Rust without Plating	Galvanic Pitting Risk

Precision Hardware Applications in the Daejeon Innovation Ecosystem

Daejeon stands as the scientific, technological, and advanced engineering capital of South Korea. Centered around the prestigious Daedeok Innopolis (대덕연구개발특구), the regional economy relies heavily on ultra-precise components for experimental instrumentation, humanoid robotics joints, and advanced urban transit testbeds.

Yevzo's CE-certified titanium stem bolts and socket fasteners provide local engineers with a decisive technological edge: reducing unsprung rotating mass, eliminating ferromagnetic interference in electromagnetic sensors, and maintaining dimensional stability across cryogenic and elevated test chambers.

Daedeok R&D Testing Rigs: Non-magnetic fastening for sensitive particle measurement instruments and laboratory sensor masts.
Next-Gen Micro-Mobility & E-Bikes: Stem, steerer clamp, and brake rotor fasteners resisting coastal moisture and severe road salts.
Advanced Robotics & Actuators: Ultra-lightweight M3 to M6 joint clamping fasteners reducing motor inertia and payload drain.

Yevzo CNC Machining and Assembly Workshop Floor

Daejeon & South Korean Industrial Fastening Trends

Procurement trends among Korean Tier-1 hardware developers reflect a shift away from treated alloy steels toward specialized titanium alloy components. Three macro-engineering drivers define the current procurement landscape in Daejeon.

Aggressive Weight Reduction in Robotics

Collaborative robotics (cobots) and robotic exoskeleton manufacturers in Daedeok are targeting fractional gram reductions across moving arm end-effectors. Replacing stainless steel M5/M6 clamping screws with Grade 5 titanium instantly trims 44% of fastener hardware mass, enabling higher servo response frequencies and prolonged lithium battery runtimes.

Harmonized Global Export Readiness

Daejeon mobility startups exporting electric scooters, cargo bicycles, and autonomous delivery rovers to Europe and North America must verify CE and UL safety documentation. Sourcing pre-certified CE stem bolts mitigates customs compliance bottlenecks and satisfies stringent safety testing regimes under ISO 4210 and EN 15194.

Supply Chain Reshoring to Certified Hubs

Procurement directors are shifting away from unverified spot traders toward audited factories located directly in China's "Titanium Valley" (Baoji). Direct mill-to-machine traceability eliminates recycled scrap contamination, hydrogen embrittlement risks, and inconsistent thread pitches in safety-critical assemblies.

Why Daejeon Importers Partner with Yevzo Titanium

Established in 2013 in the Honeycomb Industrial Park of Baoji, China, Yevzo Titanium Metal Co., Ltd. controls the complete manufacturing chain from virgin titanium sponge melting to 5-axis CNC machining.

Titanium Valley Origin

Situated in Baoji, Shaanxi, accessing 80%+ of China's premium certified titanium sponge supply. Unmatched raw material quality assurance and cost stability.

100+ Advanced CNC Units

Equipped with 3-axis, 4-axis, and multi-spindle Swiss lathes maintaining precision tolerances of ±0.005 mm for aerospace and micro-mechanical applications.

Full Lot Traceability

Every shipment is accompanied by spectral analysis certificates and EN 10204 3.1 inspection documents. Zero re-melt scrap blending guarantees joint integrity.

Direct Korea Logistics

Flexible Incoterms including DDP Daejeon, FOB Qingdao, and CIF Incheon/Busan. Fast consolidated air-freight arriving at your plant within 48 to 72 hours of dispatch.

Frequently Asked Questions for Daejeon Industrial Buyers

Practical metallurgical, regulatory, and logistics answers compiled by our international trade and mechanical engineering departments.

Are Yevzo titanium stem bolts compatible with CE and South Korean KC certification standards? +

Yes. Our Grade 5 titanium stem fasteners are engineered and verified to satisfy the safety and structural integrity benchmarks outlined in the European CE Machinery Directive (2006/42/EC) as well as the EN 15194 and EN ISO 4210-5 standards for high-stress steering assemblies. In South Korea, while finished consumer electric bicycles require KC (Korea Certification) electrical and frame testing, our CE-certified metallurgical documentation (EN 10204 3.1 inspection sheet) serves as trusted technical documentation during KTL (Korea Testing Laboratory) and KTR (Korea Testing & Research Institute) conformity assessments.

How does Yevzo prevent galling and thread cold-welding during automated assembly? +

Titanium has a thin, passive oxide film that can experience micro-friction galling if torqued dry into matching titanium, stainless steel, or aluminum female threads. We mitigate this using three distinct factory protocols: 1) Precision planetary thread rolling which produces a mirror-smooth 6g root finish with minimal micro-asperities; 2) Optional Physical Vapor Deposition (PVD) anti-friction coatings (such as TiN gold, TiAlN black, or DLC diamond-like carbon); and 3) Provision of high-grade copper or molybdenum disulphide anti-seize paste guidelines tailored to specified torque loads.

What is the standard lead time and logistics procedure from your Baoji plant to Daejeon? +

For catalog DIN 912, DIN 7991, and umbrella head bolts in standard metric sizes (M3, M4, M5, M6, M8), orders ship from our warehouse inventory within 24 to 48 hours. Custom CNC machined components made to your engineering CAD/drawings require 12 to 18 days for tooling, turning, thread rolling, and anodization. Logistics options include express air freight directly to Incheon International Airport (ICN) with customs clearance and truck transfer to Daejeon (total transit 3–5 business days), or ocean container freight arriving through Busan Port for large volume production runs.

What is the Minimum Order Quantity (MOQ) for custom-engineered stem bolts? +

For stocked catalog Grade 5 and Grade 2 titanium fasteners, our MOQ begins at just 20 to 50 pieces, supporting rapid prototyping and R&D trials in Daedeok Innopolis laboratories. For fully customized drawings requiring specialized head profiles, eccentric shoulders, internal hollow-drilled weight reduction bores, or custom PVD colors, our typical production batch MOQ is 100 to 200 pieces. Full sample inspection reports are provided prior to mass production runs.

Can you provide custom anodized interference colors to match our brand palette? +

Yes. We offer both Type II chemical anodization and electrolytic interference color anodization. Available shades include Burnt Blue, Deep Royal Blue, Electro-Gold, Emerald Green, Purple, Rose Gold, and rainbow color shifts. Because titanium anodization creates color through controlled microscopic oxide film thickness rather than pigments or paints, it adds zero measurable thickness to the thread pitch, guaranteeing a true 6g/6H thread fit without binding.

What trade payment terms and currencies do you support for Korean commercial accounts? +

We support wire transfer (T/T), confirmed Letter of Credit (L/C at sight), PayPal for rapid prototype batches, and credit card payments. We routinely transact in USD, EUR, and KRW (South Korean Won via international banking channels). Commercial terms include FOB Qingdao/Shanghai, CIF Incheon, and DDP (Delivered Duty Paid directly to your receiving dock in Daejeon, including South Korean customs tariffs and VAT handling).

Accelerate Your Hardware Engineering in Daejeon

Connect directly with our metallurgical engineers to discuss your CAD drawings, torque calculations, alloy specifications, or custom export packaging requirements. Fast responses within 1 business day.