ISO 9001
ZFTI High Strength GR5 Plain Finish Titanium Flange Bolt M4-M10
- Grade: Ti-6Al-4V (Gr5)
- Thread: DIN 6921 Metric M4–M10
- Tensile: 895–1000 MPa
2013
Baoji Hub Foundation
100+
High-Precision CNC Centers
895+ MPa
Gr5 Tensile Strength
100%
Lot-Traceable ASTM B348
Industrial Catalog
Precision Grade 5 & Grade 2 Titanium Fasteners
Manufactured strictly according to DIN, ISO, and custom mechanical blueprints. Optimized for extreme Baltic marine climates, deep-sea submersibles, automated robotic assemblies, and motorsport telemetry.
PVD Anodized
Gr5 Ti 6Al 4V Alloy Flange Bolts for Performance Chassis M6-M22
- Finish: PVD Hard Anodized
- Dimension: M6, M8, M22 Stocked
- Shear: High Dynamic Fatigue
Race Engineering
Rainbow GR5 Titanium Flange Head Allen Lightweight Bolt
- Head Type: Flanged Hex Socket
- Weight: -44% vs 8.8 Steel
- Oxide Layer: Electrolytic Passivated
Class 8.8 Proof
GR5 Titanium Alloy Socket Head Wear-Resistant CNC Bolt
- Standard: DIN 912 / ISO 4762
- Finish: Micro-Machined Plain
- Application: Robotics / Actuators
Safety Critical
Titanium Brake Rotor Structural Disc Bolt M6 x 20mm
- Tolerance: ISO 6g High Precision
- Thermal: Zero Embrittlement
- Design: Low-Profile Torx/Hex
Special Step Step
Hexagonal Step Flat Head Multi-Drive Disc Brake Titanium Bolt
- Geometry: Precision Stepped Shank
- Drive: Internal Socket + External Hex
- Corrosion: Immune to Salt & De-icer
Torx Drive
Gr5 Anodized Torx Fasteners M4/M5/M6 Shell Assembly Screws
- Drive Style: Torx T25/T30 Anti-Cam
- Weight Saving: Mass Minimization
- Aesthetics: PVD Custom Hue Treated
Umbrella Head
High-Strength GR5 Umbrella Flange Fastener M6 x 15mm
- Clamping: Expanded Surface Area
- Torque Load: Yield 828 MPa Baseline
- Compliance: RoHS & REACH Certified
Material Science & Verification
Technical Benchmark: Ti-6Al-4V vs. Traditional Fastener Alloys
Why Estonian heavy engineering and smart equipment manufacturers replace Austenitic Stainless Steels (A2/A4) and 8.8 Quenched Steels with Baoji Virgin-Milled Titanium Fasteners.
Mechanical Properties & Physical Metrics Comparison (ASTM B348 vs Standard Steels)
Certified Inspection Benchmark| Alloy Specification | Yield Strength (Rp0.2 MPa) | Tensile Strength (Rm MPa) | Density (g/cm³) | Specific Strength (Strength/Density) | Baltic Sea Crevice Corrosion |
|---|---|---|---|---|---|
| Gr5 (Ti-6Al-4V) Annealed | ≥ 828 | ≥ 895 – 1050 | 4.43 | 202.0 (High Efficiency) | Virtually Immune (Native TiO₂ Film) |
| Gr2 (Commercially Pure Ti) | ≥ 275 | ≥ 345 | 4.51 | 76.5 | Completely Immune up to 80°C |
| Marine Stainless A4-80 (316) | ≥ 600 | ≥ 800 | 7.98 | 100.2 | Pitting & Crevice Vulnerable in Slush |
| Carbon Steel Class 8.8 | ≥ 640 | ≥ 800 | 7.85 | 101.9 | Severe Rusting; Requires Zinc Flake/Galv |
| High-Tensile Steel Class 10.9 | ≥ 900 | ≥ 1040 | 7.85 | 132.5 | Prone to Hydrogen Embrittlement |
Localized Engineering
Applied Engineering Scenarios Across Estonia's Core Sectors
Targeted solutions addressing sub-zero thermal cycling, coastal brine saturation, and rapid clean-tech deployment throughout Tallinn, Tartu, Pärnu, and Narva.
1. Autonomous Robotics & Delivery Vehicles
Estonia is Europe's ground zero for autonomous mobile robots (AMRs) and last-mile delivery technology. Our Grade 5 titanium fasteners provide critical strength for chassis assemblies, suspension arms, and drive-motor mountings while decreasing curb weight. Lower vehicle mass directly translates into extended battery duty cycles per charge during harsh sub-zero Estonian winter commutes.
2. Baltic Maritime & Offshore Marine Vessels
The Gulf of Finland and Baltic waters present a corrosive cocktail of low temperatures, salinity, and bio-growth. Stainless steel fasteners typically suffer from insidious crevice corrosion under submerged gaskets and fittings. Yevzo Grade 2 and Grade 5 fasteners regenerate their passive titanium dioxide (TiO₂) barrier instantaneously upon surface abrasion, eliminating maritime structural failure.
3. EV Powertrains & High-End Motorsport Engineering
From custom motorsport engineering garages in Harju County to next-generation Scandinavian EV drivetrains, unsprung rotational mass is the primary enemy of kinetic efficiency. Our forged and precision-milled titanium wheel lug bolts, brake disc stepped screws, and manifold studs withstand heat cycles beyond 400°C without galling when treated with professional PVD or moly-based antiseize.
The Baoji Advantage
Why Sourcing From Yevzo Titanium Metal Solves Procurement Bottlenecks
Rooted in China's Titanium Valley since 2013, our integrated manufacturing operation eliminates middlemen, preserves traceability, and delivers customized metallurgy directly to your loading dock.
Direct Sourcing in China's Titanium Valley
Located in Baoji's High-Tech Development Zone, we control the entire lifecycle from virgin sponge titanium melting to ASTM B348 bar billet forging. Zero raw material shortages mean consistent pricing and guaranteed alloy chemistry.
Sub-Millimeter CNC Machining Tolerances
With over 100 sets of multi-axis CNC lathes and precision thread-rolling units, our fasteners satisfy ISO 965-1 class 6g/6H tolerances. Rolled threads enhance grain structure continuity, delivering superior fatigue life over cut threads.
Rigorous Multi-Stage QA & Lab Verification
Every single batch undergoes dimensional verification using automated optical comparators, Go/No-Go thread gauges, and chemical analysis via spectrometer. Mill Test Certificates (EN 10204 Type 3.1) are standard on all Estonian shipments.
Traceability
End-to-End Production & Quality Control Process
From incoming spectroscopic bar testing to safe international thread packaging.
Phase 1: Billet Ingot & Heat Number Trace
Virgin vacuum-arc remelted (VAR) bars are checked for chemical composition (Al 5.5-6.75%, V 3.5-4.5%, Fe ≤ 0.30%, O ≤ 0.20%). Each production batch is assigned a unique tracking serial linking to the original mill test report.
Phase 2: Hot Forging & Roll Threading
Bolt blanks are forged to align longitudinal grain paths. Threads are rolled rather than cut, increasing thread surface hardness, resisting galling, and boosting tensile shear limits by up to 30% under dynamic stress.
Phase 3: Surface Passivation & Protective Pack
Parts undergo ultrasonic degreasing, chemical passivation, and optional PVD/anodization. Each bolt is individually seated or capped to prevent thread collision during air, multimodal, or rail freight transit to Baltic destinations.
Procurement Guide
Frequently Asked Questions for Estonian Engineering Buyers
Direct technical and logistical clarifications to streamline cross-border procurement into Tallinn, Tartu, and EU ports.
1. How does Yevzo handle customs clearance, VAT, and importation documentation into Estonia?
We ship under multiple Incoterms suited to your corporate setup: DAP, CIF, or full DDP (Delivered Duty Paid). For DDP shipments to Estonian business accounts (with a valid EU VAT / EORI number), all customs handling, import tariffs, and logistics clearance through Tallinn Airport (TLL) or Port of Muuga are coordinated smoothly. All shipments include commercial invoices, packing lists with net/gross weights, and HS code classifications (typically 8108.90 or 7318.15 equivalents) for seamless EU entry.
2. How do we eliminate the risk of galvanic corrosion when pairing titanium bolts with aluminium in marine environments?
Because titanium is noble (approximately +0.05V to -0.05V against standard calomel electrodes), coupling it directly to bare marine aluminium (such as 5083 or 6082 alloys) in the presence of conductive Baltic seawater creates a galvanic cell that accelerates aluminium corrosion. We engineer our fasteners with custom non-conductive PTFE/polyamide isolation washers, specialized PVD ceramic surface layers, or recommend anti-corrosive assembly pastes (such as nickel-based or barium chromate antiseize) to permanently decouple electrical conductivity between the metals.
3. What is the typical lead time for custom CNC titanium components machined to blueprint?
For stock sizes (standard DIN 6921, DIN 912 in M4–M16), dispatch occurs within 3 to 7 business days. For customized components requiring tailored 2D/3D CAD review (STEP, DWG, or PDF), rapid tooling and CNC sample prototyping typically take 7 to 12 working days. Full production runs (500 to 10,000+ units) are manufactured and packed within 20 to 30 days, supported by rapid DHL/FedEx Express transit (3–5 days to Estonia) or sea/rail multimodal transport (25–35 days).
4. Can you provide custom anodized hues (Blue, Gold, Purple, Burnt Rainbow) with zero thread tolerance change?
Yes. Unlike electroplating or heavy powder coating, titanium anodization is an electrochemical process that grows the existing microscopic titanium dioxide (TiO₂) layer. The resulting color is produced by light wave interference rather than a pigmented substance. The thickness variation is measured in nanometers (10–200 nm), meaning pitch diameters, thread fit tolerances (6g/6H), and head seating flatnesses remain entirely unchanged, avoiding thread binding or thread jamming during torque application.
5. What material certifications accompany Yevzo titanium hardware shipments?
Every order arrives backed by a comprehensive QA package, including the Mill Test Certificate (MTC) according to EN 10204 3.1 detailing heat/melt number, exact chemical composition percentages, mechanical tensile strength, yield limits, and elongation ratios. Third-party testing certifications (SGS, TÜV, or lab chemical verification) can also be specified prior to production sign-off.
6. What is the Minimum Order Quantity (MOQ) for prototypes vs serial production for Estonian SMEs?
To support agile Estonian R&D hubs and startup incubators, our MOQ for stock catalogue fasteners begins as low as 10 to 30 pieces. For custom CNC machined parts machined from customer-provided drawings, prototyping runs start at just 10 pieces, allowing you to validate physical performance, dimensional fit, and field stresses before committing to volume mass manufacturing.
Accelerate Your Estonian Engineering Projects with Titanium Precision
Consult with our senior metallurgical and fastener engineering team. Share your STEP/DWG blueprints or standard DIN specifications to receive a binding manufacturing quote and material validation proposal within 24 hours.
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