ISO 9001 Factory
Titanium Flange Hex Nut DIN933 Class 8.8
- Thread Scale:M4 – M10 CNC Metric
- Standard Spec:DIN 6923 / DIN 933
- Corrosion Rating:Atmospheric & Salt Proof
Certified Fastening Systems
Factory-Direct Titanium Fastener Selection
Precision-machined from certified ASTM B348 Grade 5 / Grade 2 titanium bars with heat-lot material verification. Configured for high mechanical shear tolerance, unsprung mass reduction, and complete atmospheric immunity.
Ti-6Al-4V Certified
GR5 Titanium Standard Alloy Bolts & Nuts
- Tensile Yield:≥ 895 MPa / ≥ 828 MPa
- Thread Class:6H / 6g High Precision
- Mass Saving:~44% vs 8.8 Steel
CNC Turned
GR5 Socket Head Class 8.8 Precision Fasteners
- Head Geometry:Deep-Socket DIN 912
- Surface Tech:Micro-Polished Natural
- Application:Hub Hub-Centric Mounts
Class 10.9 & 12.9
High-Performance GR5 Anodized Brake Bolts
- Proof Load:Class 10.9 & 12.9 Equivalent
- Thread Finish:Rolled High-Fatigue Threads
- Thermal Drift:Zero Structural Relaxation
Anodic Oxide Layer
Large Cap Head Hex Screws Anodized / Plain
- Bearing Face:Enlarged Flange Flared Seat
- Color Range:PVD Gold / Burnt / Purple
- Shear Modulus:Aerospace Fastening Spec
ISO 4018 Standard
Full-Thread Titanium Hex Bolt ISO 4018
- Size Spectrum:M8 – M16 Heavy Gauge
- Machining Spec:Full-Shank CNC Threading
- Quality Control:100% Go/No-Go Gauge Tested
Burnt Blue Custom
Burnt Blue Titanium Custom Fasteners M6
- Length Pitch:12mm – 35mm Variable
- Treatment:Thermal Vacuum Oxidation
- Zero Flaking:Integrally Grown Oxide Film
DIN 7991 Flush
DIN7991 Countersunk Flat Head Bolts M3–M5
- Seat Design:90-Degree Flush Countersunk
- Internal Drive:Precision Hexagonal Broach
- Dispatch Time:Ex-Stock Immediate Freight
Engineering Whitepaper: Metallurgical Superiority of Ti-6Al-4V in Unsprung Hub Assemblies
Baoji Titanium Valley Technical Bulletin • Precision MetallurgyWhen evaluating mechanical fasteners for critical automotive, motorcycle, and industrial hub carriers, selecting the appropriate structural alloy dictates failure threshold margins. Commercial carbon steel bolts, while accessible, introduce structural handicaps: thermal fatigue, oxidation-induced thread embrittlement, and high un-sprung rotational mass. Yevzo specializes exclusively in ASTM B348 Grade 5 (Ti-6Al-4V) titanium alloys, which yield a specific strength-to-weight ratio superior to Class 8.8 and Class 10.9 tempered automotive steels.
4.43 g/cm³
Titanium Mass Density
≥ 895 MPa
Ultimate Tensile Yield
−44%
Rotational Mass Delta
0.00 mm/yr
Saline Corrosion Rate
| Alloy Classification | Yield Strength (MPa) | Tensile Strength (MPa) | Density (g/cm³) | Thermal Expansion (×10⁻⁶/K) | Pitting Resistance (PREN) |
|---|---|---|---|---|---|
| Gr5 (Ti-6Al-4V) Titanium | ≥ 828 MPa | ≥ 895 MPa | 4.43 | 8.6 | Immune (Passivated TiO₂) |
| Grade 2 (Commercially Pure Ti) | ≥ 275 MPa | ≥ 345 MPa | 4.51 | 8.6 | Immune (Marine Rated) |
| Class 8.8 Structural Steel | 640 MPa | 800 MPa | 7.85 | 11.7 | Vulnerable (Galvanic / Rust) |
| Class 10.9 Alloy Fastener Steel | 940 MPa | 1040 MPa | 7.85 | 12.2 | Severe Hydrogen Embrittlement Risk |
*All mechanical metrics are verified under room-temperature conditions in accordance with ASTM E8 / ASTM B348. Thread flank fatigue tests verify our cold-rolled thread form withstands over 10,000,000 cyclic loading iterations at 65% of tensile yield without micro-fracturing.
Localized Deployment Profile
Tailored Fastener Engineering for Mostar & Herzegovina
Operating machinery or performance vehicles in Mostar presents a unique combination of geographic and environmental demands: extreme Mediterranean microclimates, steep karstic elevation changes along the Neretva basin, and high salt-humidity exposure.
Thermal Amplitude Cycling
Mostar experiences some of Europe's highest summer heatwaves, exceeding 40°C, contrasted by freezing, damp winter drafts along the Neretva. Steel wheel hardware experiences thermal expansion rates that cause thread loosening or heat seize. Yevzo's Ti-6Al-4V maintains a low linear coefficient of thermal expansion (8.6 × 10⁻⁶/K), preventing bolt stretch and galling across severe temperature shifts.
Mountain Incline & Dynamic Shearing
Traversing mountain roads linking Mostar, Jablanica, and Blagaj involves continuous ascents, descents, and heavy switchback braking. Brake rotor heat quickly migrates into the wheel hub assembly. Titanium's thermal insulation and high shear tolerance safeguard against rim vibration, disc runout, and hub bearing wear during sustained descent deceleration.
Alkaline Karst & Winter Brine Resistance
Limestone dust along Herzegovina's road network, combined with winter anti-icing brine applications, rapidly corrodes zinc-plated or black-oxide steel fasteners. Grade 5 titanium creates an instant, self-healing oxide film (TiO₂) upon contact with oxygen, making it impervious to chloride ions, industrial acid rain, and limestone scaling.
Emerging Procurement Trends in Mostar's Industrial & Automotive Sectors
Regional Market Intelligence • EV Transition & Fleet ModernizationAs Bosnia and Herzegovina moves forward with major infrastructure projects, including Corridor Vc passing adjacent to Mostar, the regional automotive landscape is changing. Independent tuning facilities, high-performance racing groups, and commercial fleet managers are adjusting their hardware procurement standards.
1. EV & Hybrid Lightweighting
Electric vehicles carry heavy chassis battery packs, making reductions in unsprung rotational mass critical for improving battery range and suspension response. Upgrading from heavy steel wheel nuts to Grade 5 titanium shaves approximately 1.2 kg to 1.8 kg of rotational weight off the wheel hubs, delivering noticeable improvements in vehicle dynamics and energy efficiency.
2. Motorsport & Track Day Demands
Automotive clubs and motorcycle tuners across Herzegovina frequently attend track events in the wider Adriatic region (such as Grobnik). The demand for Class 10.9/12.9 equivalent, hot-forged and CNC finish-turned wheel studs, lug nuts, and caliper bolts has grown steadily, driven by the need for hardware that avoids high-stress heat fatigue.
3. Long-Life Solar & Hydro Fastening
Beyond automotive applications, Mostar's rapid expansion into solar energy installations and Neretva hydro infrastructure has increased regional demand for non-reactive, galvanic-resistant fasteners. Grade 2 and Grade 5 flange bolts and nuts are regularly specified for mounting sensitive electrical and marine assemblies that require zero maintenance over multi-decade spans.
Manufacturing Pedigree
Direct Access to China's "Titanium Valley"
Established in 2013 in the Honeycomb Industrial Park, Baoji High-Tech Development Zone, Yevzo Titanium Metal Co., Ltd. operates at the center of the world's most concentrated titanium supply chain. By managing the full production path from raw sponge and ingot conversion to CNC multi-axis milling, we remove export brokers and intermediary fees for our international partners.
- 100+ Advanced CNC Machining Units: Multi-axis lathes, cold-heading headers, thread rollers, and optical vision inspection centers ensuring micrometer-level precision.
- Mill Test Certificates (MTC): Every batch ships with EN 10204 3.1 certification verifying tensile metrics, chemical composition, and heat-lot traceability.
- OEM / ODM Custom Engineering: We machine custom thread pitches (M12×1.25, M12×1.5, M14×1.25, M14×1.5, UNF variants), taper seats, ball seats, and floating washer designs directly from customer CAD drawings.
- Surface Treatments: PVD vacuum nitriding and anodized finishes available in burnt blue, royal gold, deep purple, and stealth black, all calibrated to avoid affecting thread tolerances.
Baoji Production Plant
Multi-Axis Turning
ASTM B348 Raw Bar
Optical QA Testing
Procurement Solutions
Frequently Asked Questions: Sourcing Titanium Fasteners in Mostar
Clear, practical guidance on logistics, thread specifications, customs clearance, and anti-seize assembly procedures for buyers in Bosnia and Herzegovina.
What is the logistical transit timeline and customs procedure for shipments to Mostar?
For clients in Mostar and the broader Herzegovina-Neretva Canton, we provide door-to-door (DDP) and airport-to-door express delivery via DHL, FedEx, and UPS (transit time: 4 to 7 working days from Baoji dispatch). Commercial wholesale consignments can be cleared via Sarajevo International Airport customs or routed by sea freight through the nearby Port of Ploce (Croatia), followed by overland transit into Mostar. We provide complete commercial documentation, including EUR.1 declaration support, HS Code classification (731815 / 810890), Packing Lists, and EN 10204 3.1 Inspection Certificates to keep customs clearance smooth.
Why must Grade 5 (Ti-6Al-4V) be specified for wheel lug nuts instead of Grade 2?
Grade 2 is commercially pure (CP) titanium with a tensile yield strength of roughly 275–345 MPa. While exceptionally resistant to chemicals, it lacks the mechanical strength required for automotive hub studs, which must withstand cyclic shear, radial torque, and intense rotational acceleration. Grade 5 (Ti-6Al-4V) is a structurally hardened alpha-beta alloy with a minimum tensile yield strength of 828–895 MPa, exceeding standard ISO Class 8.8 steel and meeting Class 10.9 fastener criteria. Grade 2 is recommended for non-structural trim or fairings, but wheel hubs require Grade 5.
How do we prevent galling and thread seizing when pairing titanium nuts with steel studs?
Galling (friction-induced cold welding) can occur when bare titanium threads are torqued dry against steel or titanium studs. We recommend applying a specialized anti-seize compound containing molybdenum disulfide (MoS₂), copper, or nickel flakes to the thread flanks and bearing seat prior to installation. Additionally, torque specifications should be calibrated using a calibrated torque wrench: because titanium has a lower coefficient of friction when lubricated, recommended torque values are generally 10% to 15% lower than dry steel values to avoid over-clamping.
Can you machine bespoke thread pitches and seat angles for European and Japanese wheels?
Yes. Our multi-axis CNC lathes regularly produce both 60-degree conical (acorn) seats, factory OEM spherical/radius ball seats (R12, R13, R14 for Porsche, Audi, and Mercedes-Benz platforms), and flat washer-faced mag seats. Standard threads include M12×1.25, M12×1.5, M14×1.25, M14×1.5, as well as 1/2-20 UNF. If your workshop handles custom conversions, wheel spacers, or wider offsets, we can machine bolts with extended shank lengths directly from your CAD files or physical samples.
What is the minimum order quantity (MOQ) for workshops and fleet distributors in Mostar?
For stocked inventory (such as standard DIN 6923 flange nuts, ISO 4018 hex bolts, and standard lug nut sizes), our starting MOQ is just 20 pieces, allowing local specialty garages and racing teams to source sample sets for test fits. For custom-machined or unique anodized runs based on bespoke drawings, MOQs generally start at 50 to 100 units depending on raw bar diameter and machining complexity.
Will anodized titanium hardware fade or peel under winter road conditions?
No. Unlike painted finishes, electroplating, or powder coating, titanium anodization is an electrochemical process that grows an integrated titanium dioxide (TiO₂) optical film on the metal's surface. It contains no synthetic pigments or dyes to peel, flake, or chip off under road debris impacts. The resulting finish resists both alkaline soil exposure and anti-icing road salts used on mountain highways around Mostar.
Partner with Baoji's Premier Titanium Fastener Facility
Whether you are optimizing a racing fleet in Herzegovina, sourcing corrosion-free fasteners for local industrial infrastructure, or outfitting custom vehicle builds, connect directly with our engineering team for technical validation and volume-tier quotations.