Gr5 Pan Head
Factory Supply Class 6 M6*15 GR5 Titanium Pan Head Anodized Screw
Ti-6Al-4V | M6×15mm | Rolled 6g Threads | Electrolytic Anodized
Precision Thread Solutions
High-Performance Titanium M6 Fasteners & Assemblies
Direct-factory supply from Baoji’s dedicated titanium milling and heading facilities, delivered with comprehensive EN 10204 3.1 chemical inspection certificates to Kraków, Niepołomice, and Skawina manufacturing hubs.
DIN Standard PVD
M4/M5 Blue Grey Titanium Pan Head Self-Tapping Screws
Aerospace PVD Coat | DIN Standard | High Pullout Shear Capacity
Hex Flange Bolt
Factory Supply GR5 Titanium Hex Flange Head Bolt M10X20
Integrated Flange | Preload Uniformity | Mirror Polished Finish
Custom Hardware
High Performance Gr5 Titanium Cross Dowel Nuts & Knobs
CNC Slotted | Ultra-precise Bore Orthogonality | Anti-vibration
Torx Self-Tapping
GR5 Anodized Titanium Torx Head Standard M6 Screw
M6 Metric Thread | Anti-Cam-out Star Drive | Fairings & Casings
Hex Washer Torx
High Strength Titanium Alloy Torx Head Self-Tapping Screws
Integrated Washer Flange | PVD / Natural Passivated Finish
Automotive Spline
GR5 Custom Titanium Spline Drive Flange Sleeve Nuts
Automotive Racing Wheel Hubs | Cold Forged Head | High Torque
Mining & Heavy Duty
Metric Grade 5 Titanium Alloy Flange Screws
Severe Duty Chemical & Aggressive Mining Salt Environments
Technical White Paper: Section I
Mechanical Superiority of Grade 5 (Ti-6Al-4V) M6 Bolts in Dynamic Systems
Fastener integrity in dynamic vibrational environments is defined not only by raw tensile strength, but by the fatigue resistance index and load relaxation characteristics under thermal cyclings. In high-precision engineering projects across Kraków and Southern Poland, standard austenitic stainless steels (such as A2-70 or marine-grade A4-80) frequently fail due to mass penalties or localized chloride stress corrosion cracking. Zunvo's manufactured Titanium M6 Bolts utilize certified Ti-6Al-4V Grade 5 alloy (UNS R56400 / Werkstoff 3.7165), maintaining an ultra-high yield strength exceeding 828 MPa combined with a remarkably low mass density of 4.43 g/cm³.
Unlike conventional turned fasteners that introduce circumferential stress notches through subtractive threading, our production processes deploy high-speed cold or warm roll-threading. Roll threading ensures uninterrupted grain-flow lines that contour around each 60-degree crest and root. This metallographic phenomenon enhances the fatigue life of an M6 thread by over 300% when benchmarked against traditional cut threads, virtually eliminating fastener shear in high-frequency harmonic environments such as automated robotic gantry arms, aerospace drone assemblies, and internal combustion valvetrains.
| Material Property (Metric) | Gr5 Ti-6Al-4V (Zunvo) | A4-80 Stainless | Class 10.9 Steel |
|---|---|---|---|
| Tensile Strength (Rm) | ≥ 895 - 1050 MPa | ≥ 800 MPa | ≥ 1040 MPa |
| Yield Strength (Rp0.2) | ≥ 828 MPa | ≥ 600 MPa | ≥ 940 MPa |
| Mass Density (ρ) | 4.43 g/cm³ | 7.98 g/cm³ | 7.85 g/cm³ |
| Specific Strength (kN·m/kg) | 214 (Extreme) | 100 (Standard) | 132 (Moderate) |
| Young’s Elastic Modulus | 110 - 114 GPa | 193 GPa | 210 GPa |
| Galvanic Corrosion Index | Immune (Forms TiO₂) | Passivated | Rust prone (Needs coat) |
*Values validated via ASTM E8/E8M tensile test protocols under room temperature (23°C ± 2°C).
Regional Industrial Synergy
Engineering Applications of M6 Titanium Hardware in Kraków
Connecting Baoji's global titanium manufacturing capacity with Kraków’s vibrant technological ecosystem, spanning university spin-offs, advanced robotics clusters, and aerospace design bureaus.
Aerospace & UAV Systems
Operating in proximity to Kraków-Balice International Airport and regional aviation design hubs, modern composite UAV airframes utilize DIN 912 M6 Titanium socket bolts to fasten sensor gimbals, motor pylons, and wing spars, securing an indispensable 44% weight reduction relative to steel without sacrificing structural tensile safety.
Robotics & Automation
Industrial integrators based in the Kraków Technology Park (KPT) and Niepołomice Investment Zone construct multi-axis SCARA and articulated robot arms. Reducing the rotational inertia of end-of-arm tooling (EOAT) via ISO 7380 M6 titanium button head screws allows higher servo acceleration curves and extended gearhead lifespan.
Motorsport & Performance Auto
Southern Poland boasts deep rally traditions and performance engineering workshops. Our flanged M6 hex bolts and cross-dowel nuts are actively applied in subframe assemblies, Brembo-style brake rotor shrouds, fluid pump flanges, and custom lightweight intake manifolds where thermal dissipation and anti-vibration locking are critical.
Cryogenics & Academic R&D
Researchers at AGH University of Krakow and the Jagiellonian University require non-magnetic fasteners for magnetic resonance apparatuses, cryogenic cooling jackets, and vacuum chamber feedthroughs. Grade 5 titanium boasts near-zero magnetic susceptibility (μr ≈ 1.00005) and exhibits zero ductile-to-brittle transition down to liquid nitrogen ranges.
Market Intelligence & Evolution
Fastener Sourcing Trends Across Kraków & the Central European Corridor
Navigating the transition toward localized smart warehousing, carbon footprint verification, and strict aerospace quality traceability in the Małopolska industrial sphere.
1. The Shift to High-Strength Lightweighting
Under EU Green Deal mandates and industrial efficiency benchmarks, machinery manufacturers throughout Lesser Poland are under intensifying pressure to curtail power consumption. In fast-indexing production machinery, reciprocating mass directly dictates energy overhead. Transitioning from Class 8.8 and 10.9 steel fasteners to Ti-6Al-4V Grade 5 M6 screws reduces moving assembly weight by 44%, decreasing cyclic motor thermal load and yielding significant long-term energy savings across industrial facilities.
2. Stringent Traceability & EN 10204 3.1 Auditing
Procurement engineers in Kraków no longer tolerate anonymous fastener lots lacking transparent provenance. With Poland's expanding integration into NATO aerospace supply chains and specialized defense manufacturing, all structural M6 bolts require definitive chemical and mechanical test certificates tracing back to the master ingot melt. Zunvo provides complete lot-matched documentation certifying elemental purity (strict checks on O, H, N interstitial gas contents).
3. Resilient Multimodal Logistics to KRK Hubs
Contemporary supply chain strategies rely heavily on rapid direct-factory channels bypassing redundant intermediate traders in Western Europe. Leveraging swift customs processing at John Paul II International Airport Kraków-Balice and scheduled rail-sea networks, Kraków-based purchasing managers establish direct factory agreements with Baoji manufacturing centers, achieving 3-day sample dispatch and reliable replenishment pipelines.
2015
Established in Baoji, China
101-200
Specialized Technical Workforce
±0.005mm
Precision Machining Tolerance
≤ 7 Hours
Average Engineering Quote Response
Technical White Paper: Section II
Engineering Guidance: Assembly Dynamics, Friction & Galling Prevention
When deploying Grade 5 Titanium M6 bolts into precision mechanical assemblies, design engineers must calculate tightening torque according to modified tribological parameters. Titanium displays a specific coefficient of friction (μ ≈ 0.30 to 0.35 in dry unlubricated contact) and possesses a natural vulnerability to micro-welding or galling under elevated localized pressure against matching female threads, especially when mating into aluminum or stainless steel taps.
Standard Preload Calibration: For dry assembly of an M6 Gr5 bolt into a threaded titanium or steel substrate, tightening torque should not surpass 9.5 to 10.2 N·m. However, our engineering division universally recommends the application of a high-grade anti-seize paste containing molybdenum disulfide (MoS₂) or colloidal copper. This mitigates the thread friction coefficient to μ ≈ 0.10 - 0.12, allowing uniform preload tension without risking thread seizure, permitting torque calibration between 5.5 and 6.8 N·m to reach nominal clamp force without exceeding 70% of the bolt's yield strength.
Surface Coating Benefits: Beyond aesthetic appeal, our physical vapor deposition (PVD) titanium nitride (TiN) or carbon-doped diamond-like carbon (DLC) finishes substantially increase surface hardness (reaching up to 2500 - 3000 HV), practically eliminating galling hazards while providing maximum resistance against winter de-icing chemicals and salt brine encountered on road networks throughout Poland.
M6 Titanium Bolt Fastening Specification Quick-Guide
- Thread Size & Pitch: M6 × 1.00 mm (Standard Metric Coarse) / M6 × 0.75 mm (Fine Pitch).
- Hex Socket Key Size (DIN 912): 5.0 mm Allen Key / T30 Torx Drive (resists stripping).
- Recommended Dry Torque: 9.8 N·m (Maximum allowable: 11.2 N·m).
- Recommended Lubricated Torque (Anti-seize): 6.2 N·m (Target clamp load ≈ 5.4 kN).
- Shear Strength (τ): ≈ 550 MPa (Transverse double shear).
- Operating Temperature Limit: Up to 400°C without notable creep or microstructural alteration.
- Thermal Expansion Coefficient: 8.6 × 10⁻⁶ / K (Compatible with carbon fiber composites).
Procurement Intelligence
Frequently Asked Questions by Polish B2B Buyers & Engineers
Everything procurement officers, project managers, and lead mechanical designers in Kraków and the wider Polish market need to know regarding imports, certifications, tolerances, and custom runs.
How do import customs and VAT handle shipments arriving in Poland from China?
Direct B2B purchases from Zunvo to registered Polish entities (Sp. z o.o., S.A., or jednoosobowa działalność gospodarcza) are classified under standard EU TARIC codes for titanium hardware (predominantly 8108 90 90 or 7318 equivalents). Polish VAT (23%) is handled upon entry via the automated customs clearance system (CELINA/AIS) or through courier deferred VAT schemes (Article 33a of the Polish VAT Act). We furnish complete commercial invoices, packing lists with net/gross weights, and dual-language product declarations to guarantee rapid clearance at Warsaw (WAW) or Kraków (KRK) hubs.
What metallurgical certifications are supplied with an M6 Titanium shipment?
Every production lot is provided with an authentic EN 10204 Type 3.1 Inspection Certificate. This document specifies precise chemical spectroscopy (confirming Aluminum 5.5-6.75%, Vanadium 3.5-4.5%, Iron ≤ 0.40%, Oxygen ≤ 0.20%, and trace limits of Hydrogen and Nitrogen) alongside mechanical testing results: tensile yield strength (Rp0.2), ultimate elongation (A%), and thread dimensional compliance verified with calibrated Go/No-Go plug and ring gauges.
Can Zunvo produce custom M6 bolts from CAD step files or technical drawings?
Yes. As an onsite-verified manufacturer in Baoji, we operate CNC multi-axis turning-milling centers capable of tolerances down to ±0.005 mm. Whether your engineering blueprint dictates non-standard underhead radii, pre-drilled safety wire lock holes (aerospace specification), oversized head flanges, custom drive interfaces (Torx Plus, internal hex, spline), or custom thread lengths, our technical team completes 3D design checks within 24 hours and delivers prototypes in 3 to 5 business days.
What are the standard lead times for deliveries into Kraków?
For standard catalog specifications (DIN 912 socket caps, DIN 6921 flange bolts, and ISO 7380 button heads in lengths from 10mm to 60mm), inventory orders are packaged and dispatched within 24 to 48 hours. Air express transit directly to Kraków addresses via DHL Express, FedEx Priority, or UPS takes approximately 4 to 6 working days. Bulk oceanic container freight consolidated into Gdynia or Gdańsk harbors is available for scheduled high-volume industrial consignments (28 to 35 days).
How does color anodizing impact dimensional tolerances on M6 threads?
Electrolytic anodizing on titanium is an electro-chemical oxidation procedure that induces a controlled microscopic titanium dioxide (TiO₂) film. The resulting coloration (Burnt Blue, Gold, Purple, Green, or Rainbow) is generated solely through optical light refraction and interference—not pigment deposition. The thickness of this oxide barrier ranges between 20 nm to 200 nm (0.02 - 0.2 microns), which has absolutely zero detrimental effect on class 6g thread pitch diameters, ensuring flawless threading into tight tolerance tapped holes.
What is the Minimum Order Quantity (MOQ) for custom-engineered parts?
We maintain flexible minimum order tiers to nurture prototype R&D through to mass volume assembly. Catalog bolts and nuts generally carry an MOQ of 100 to 200 pieces. For custom CNC machined components based on your drawing, our production batches start from as few as 50 to 100 units, allowing mechanical engineering teams to validate fit, clearance, and dynamometer strain before releasing capital for series tooling.
Manufacturing Pedigree
Why Kraków Industrial Leaders Partner with Zunvo Titanium
Combining direct access to the world’s premier titanium smelting reserves in Shaanxi with uncompromising quality management protocols.
The "China Titanium Valley" Hub
Established in 2015 in Baoji, Shaanxi, Zunvo sits squarely at the core of the largest titanium cluster globally. This immediate proximity guarantees uninterrupted, prime-grade Ti-6Al-4V vacuum-arc remelted (VAR) bar stock, eliminating middlemen premiums and ensuring our Kraków partners receive high-spec titanium at factory-direct pricing.
Zero-Defect Quality Control (100% Inspected)
Quality is not a random sampling check; it is our baseline protocol. Our 1,000–3,000 m² workshop floor is backed by modern optical sorting machines, digital coordinate measuring machines (CMM), Rockwell hardness testers, and automated thread profile projectors. Every single batch is subjected to rigorous Go/No-Go gauge assessment before dispatch.
Rapid Engineering Cycle
With an average technical response time under 7 hours, we operate seamlessly alongside European engineering workflows. Our dedicated international trade and engineering department speaks fluent technical English, transforming your STP, DWG, or PDF technical files into production-ready G-code within hours, backed by a proven 66% buyer repeat-order rate.
Request Your Custom Engineering Quote & Test Samples
Connect directly with our Baoji application engineering desk. Submit your required M6 bolt dimensions, technical drawings, or target annual quantities for a detailed manufacturing proposal delivered within 7 hours.
