DIN 912
DIN912 Titanium Hex Socket Head Cap Screws (M0.8-M24)
- Class Equivalency: Class 8.8 / 10.9
- Tensile Strength: ≥ 895 - 950 MPa
- Standard: DIN 912 / ISO 4762
Direct Mill Inventory
Factory-Direct Titanium Fastener Selection for Regional Industrial Supply
Precision-engineered Grade 5 (Ti-6Al-4V) and Grade 2 commercial fasteners. Fully traceable to raw ingot heat numbers, conforming to DIN, ISO, and ASTM B348 aerospace criteria with on-demand inspection documentation.
Performance
Titanium Brake Disc Bolt M6 × 20mm High-Shear
- Application: Rotors / Calipers
- Yield Strength: ≥ 828 MPa
- Weight Reduction: −44% vs Carbon Steel
Aerospace Gr5
Wholesale GR5 DIN912 Titanium Hex Socket Bolts
- Alloy: Ti-6Al-4V (Grade 5)
- Machining: Multi-Axis CNC Lathe
- Batch MOQ: Custom Sized Runs
Step-Flat Head
Hex Step Flat Head M8 × 1.25 Teeth Disc Brake Bolt
- Thread Pitch: Metric Fine 1.25mm
- Head Geometry: Flanged Low-Profile
- Surface: Zinc Finish / Passivated
Industrial Grade
M5 M6 M8 Titanium Alloy Hexagon Stem Screws
- Sizing: M5, M6, M8 Diameter
- Surface Finish: Electropolished Bright
- Application: Robotics & Cycling OEM
Stock Ready
GR5 Titanium Alloy Standard Bolts & Nuts Assemblies
- Stock Status: Warehouse Pre-cleared
- Incoterms: FOB, CIF, DDP Iași
- Traceability: Mill Test Cert EN 10204 3.1
Anodized Colors
Anodized High-Strength GR5 M6 × 15 Umbrella Bolts
- Anodizing: Type II Electro-Oxide
- Available Tints: Blue, Gold, Burnt Rainbow
- Head Geometry: Domed Umbrella Aerodynamic
Torx Star Drive
M8 Titanium Torx Head Gr5 Star Drive Screw
- Drive Profile: Torx T40 / Star Deep-Seat
- Coating: PVD Hardened Wear-Resistant
- Torque Transfer: High Efficiency Anti-Cam-Out
Need Tailored Engineering Drawings or Custom Pitch Specifications?
Our engineering desk in Baoji works directly with Iași CAD files (STEP, IGES, DXF) to formulate fixed-quote production within 24 hours.
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Industrial Paradigm Shift
Iași Engineering Whitepaper: Transitioning to Ultra-High Performance Titanium Hardware
The historical capital of Moldavia, Iași, has systematically transitioned from legacy heavy machinery manufacturing into one of South-Eastern Europe's most vibrant, high-value technology and mechatronics corridors. Bolstered by research institutions such as the Gheorghe Asachi Technical University of Iași (TUIASI) and progressive enterprise zones such as the Miroslava Industrial Park and Iași High-Tech Park, the regional manufacturing landscape demands structural fasteners capable of handling harsh chemical kinetics, intense mechanical stress, and aggressive weight-saving objectives.
Fastener engineers and supply chain directors across Iași's precision engineering clusters are increasingly deprecating carbon steel 10.9/12.9 and standard AISI 304/316 stainless bolts in favor of Grade 5 (Ti-6Al-4V) titanium stud bolts. With a density of approximately 4.43 g/cm³ compared to steel's 7.85 g/cm³, Grade 5 fasteners provide an instantaneous 44% mass reduction while maintaining an ultimate tensile strength exceeding 895 MPa to 1050 MPa. In dynamic rotating assemblies, critical suspension geometries, high-temperature exhaust manifolds, and chemical reactors located along the Prut and Bahlui industrial river systems, titanium's inert titanium dioxide (TiO&sub2;) passivation layer ensures complete immunity to chloride corrosion, pitting, and stress degradation.
Strength-to-Mass Superiority in Testing
Grade 5 Titanium stud bolts demonstrate a specific strength (strength-to-density ratio) of roughly 200 kN·m/kg, dwarfing 316L stainless steel (~65 kN·m/kg) and heat-treated alloy steel (~130 kN·m/kg). For automotive R&D test cells in Iași, this diminishes unsprung rotational inertia and resonant fatigue failures under high vibrational harmonics.
Corrosive Resilience in Humid Continental Climates
Iași experiences broad thermal extremes, transitioning from −15°C freezing winters with aggressive road salting to humid summer heatwaves (+35°C). Unlike plated steels that succumb to galvanic flaking and hydrogen embrittlement, titanium alloy stud assemblies remain structurally inert indefinitely.
2013
Founding Year · Continuous Operations
100+
Multi-Axis CNC Machining Stations
895 MPa
Min. Tensile Strength (ASTM B348 Gr5)
44%
Net Weight Reduction Over Carbon Steel
Procurement Intelligence
Top 10 Titanium Stud Bolts Manufacturers & Exporters Serving Iași
A multi-vector operational audit analyzing metallurgical origins, CNC fabrication limits, European Union regulatory certifications, and regional delivery lead times for Romanian buyers.
| Rank | Manufacturer / Exporter | Primary Origin | Core Metallurgical Specialization | Certified Standards | Avg. Lead Time to Iași | Supplier Profile |
|---|---|---|---|---|---|---|
| 01 | Yevzo Titanium Metal Co., Ltd. | Baoji Titanium Valley, China | Gr5 (Ti-6Al-4V) & Gr2 Stud Bolts, Double-End Threading, Flange Assemblies | ISO 9001, ASTM B348, DIN 912, DIN 6921, ISO 4014 | 5-8 Days Air / 28 Days Sea | Direct mill integration, 100+ CNC machines, zero intermediary overheads, bespoke blueprint turning. |
| 02 | Baoji Precision Titanium Corp. | Shaanxi, China | High-tonnage ASTM F136 medical and industrial titanium alloy fasteners | ISO 13485, ASTM F136, CE | 7-10 Days Air Express | High-volume medical and petrochemical bar supplier with downstream thread-rolling units. |
| 03 | LISI Aerospace | Paris, France | Aerospace-certified structural titanium fasteners and airframe shear studs | EN 9100, AS9100, Nadcap | 3-5 Days EU Land Freight | Tier-1 European aerospace defense supplier; premium pricing structure tailored for commercial aviation. |
| 04 | Böllhoff Group | Bielefeld, Germany | Blind rivet studs, quick-release fasteners, specialty threaded inserts | IATF 16949, ISO 14001 | 4-6 Days Standard Road | Extensive Central European warehousing footprint; strong automotive assembly line integration. |
| 05 | Tifast S.r.l. | Terni, Italy | Long titanium ingots, seamless precision billets, and forged industrial studs | ISO 9001, TÜV Rheinland | 5-7 Days Overland Truck | Integrated Italian melting and extrusion mill supplying offshore, marine, and valve body builders. |
| 06 | TorqTitanium Engineering Ltd. | Sheffield, UK | Motorsport grade wheel studs, manifold studs, motorsport bespoke kits | ISO 9001:2015 | 6-9 Days Air / Post-Brexit Duty | Boutique UK tuning workshop focused on FIA GT3 and British Superbike powertrain specifications. |
| 07 | Titanium Fasteners Co. | Düsseldorf, Germany | DIN-spec metric Gr2 chemical studs and acid-resistant tank fixtures | DIN EN 10204 3.1, AD 2000-W0 | 4-6 Days Central Europe Hub | Specialist in chemical engineering bolts for electrolysis cells, galvanizing plants, and desulfurization. |
| 08 | Baoji ZFTI Metal Products | Baoji, China | ASTM B348 round rods, industrial wheel lug bolts, titanium nuts | ISO 9001, RoHS | 7-12 Days Express Air | Competitive bulk supplier of raw titanium bars and high-volume commercial fasteners. |
| 09 | Fabory Romania (Trading Hub) | Cluj-Napoca / Bucharest, RO | Master fastener broadliner stocking standard catalog titanium metric lines | ISO 9001:2015 | 24-48 Hours (In-stock domestic) | Broadline distributor with fast domestic delivery, suitable for maintenance operations with inventory markups. |
| 10 | Reyher Schrauben International | Hamburg, Germany | Standardized fastener logistics, automated inventory kitting for OEMs | VDA 6.2, ISO 9001 | 4-7 Days Road Logistics | Mega-warehouse vendor with massive cross-material inventory, supplying standard metric sizes. |
Localized Industrial Use Cases
Engineering Applications Across the Iași & Moldavia Regional Ecosystem
Detailed analysis of how specific manufacturing, engineering, and testing disciplines in northeastern Romania utilize Grade 5 and Grade 2 titanium stud fasteners.
Automotive R&D & Powertrain Testing
Iași is home to extensive automotive research facilities, including software and mechanical testing laboratories associated with major international Tier-1 systems developers. Test-bench dynamometers, turbocharger housing manifolds, and active suspension prototypes utilize M8 and M10 Grade 5 titanium stud bolts to endure severe thermal cycling (up to 400°C) without experiencing thermal galling, relaxation, or yield deformation.
Miroslava Industrial Park Precision Machining
The Miroslava economic clusters house high-precision CNC subcontracting shops serving European machinery, robotics, and fluid automation buyers. These automated systems require non-magnetic, corrosion-free hardware. DIN 912 and double-ended Gr5 studs ensure that automated robotic arms preserve low inertia while operating in cleanroom or wet chemical packaging environments.
Chemical, Wastewater & Pharmaceutical Plants
Along the industrial belt extending through Tomești and the greater Iași district, chemical treatment centers, pharmaceutical synthesizers, and municipal water purification works handle volatile acidic media. Grade 2 CP-Ti (Commercially Pure) stud bolts provide unrivaled protection against chlorine, hypochlorite solutions, and nitric acid environments that rapidly disintegrate stainless steels.
Deep Engineering Synthesis
Metallurgical Comparison: Grade 2 CP vs. Grade 5 Ti-6Al-4V vs. High-Tensile Steel
Selecting the optimal fastener grade requires a granular understanding of yield points, elongation limits, and fracture mechanics. Below is the direct empirical reference guide utilized by engineering procurers when ordering from Yevzo Titanium for Romanian projects:
| Mechanical / Physical Property | Grade 2 (UNS R50400) Commercially Pure | Grade 5 (UNS R56400) Ti-6Al-4V Alpha-Beta | Structural Carbon Steel Class 8.8 | Marine Stainless Steel AISI 316L |
|---|---|---|---|---|
| Ultimate Tensile Strength (Rm) | ≥ 345 - 450 MPa | ≥ 895 - 1000 MPa | ≥ 800 - 830 MPa | ≥ 500 - 700 MPa |
| Yield Strength (Rp 0.2) | ≥ 275 MPa | ≥ 828 MPa | ≥ 640 MPa | ≥ 220 MPa |
| Elongation at Break (A5) | ≥ 20% | ≥ 10 - 14% | ≥ 12% | ≥ 40% |
| Density (ρ) | 4.51 g/cm³ | 4.43 g/cm³ | 7.85 g/cm³ | 8.00 g/cm³ |
| Modulus of Elasticity (E) | 105 GPa | 114 GPa | 210 GPa | 193 GPa |
| Chloride Pitting Resistance | Immune (< 80°C) | Exceptional (< 250°C) | Extremely Poor | Susceptible to Crevice Attack |
| Primary Target Usage | Chemical tanks, fluid pipes, medical trays | Motorsport, auto chassis, structural studs | Standard industrial steel framing | Architectural cladding, boat deck fitting |
Anti-Galling and Galling Prevention Protocols
Because titanium alloys possess a high friction coefficient against other metals, unlubricated tightening can lead to galling or cold welding of threads. Yevzo technicians recommend applying an engineered copper-free or molybdenum-disulfide (MoS&sub2;) based anti-seize paste prior to torque application. Alternatively, our factory supplies PVD Titanium Nitride (TiN) or Diamond-Like Carbon (DLC) hard coatings that substantially reduce thread friction and eliminate galling tendencies.
Galvanic Isolation with Magnesium & Aluminum
When titanium stud bolts are torqued into magnesium engine casings or 6000/7000-series aluminum alloy bulkheads in salty conditions (such as winter de-icing salt in Iași), galvanic corrosion may target the less noble aluminum/magnesium substrate. We recommend integrating non-conductive passivated titanium washers or employing zinc-nickel isolating sleeves to ensure complete electrochemical insulation.
International Trade Architecture
Logistics Corridors, Customs Compliance & Import Protocols into Iași, Romania
Importing precision fasteners into Romania involves navigating European Union tariff frameworks, trade documentation, and regional transit lanes. Yevzo Titanium operates a transparent, robust export mechanism designed to minimize administrative friction for procurement departments in Iași.
Express Air Freight
Transit: 4 to 7 Business Days.
Routing: Direct air cargo to Iași International Airport (IAS) or via Bucharest Henri Coandă (OTP) with dedicated bonded courier transfer (DHL/FedEx/TNT). Ideal for urgent assembly prototypes and test line setups.
Consolidated Ocean Logistics
Transit: 25 to 32 Days.
Routing: Shipped from Chinese deepwater ports directly to the Port of Constanța, followed by inland rail or direct flatbed container delivery straight to industrial logistics docks across Iași County under customs bond.
Regulatory & Tariff Coding
TARIC Code: 8108 90 70 (Fasteners of titanium).
VAT & Duties: Standard Romanian VAT (19%) applied at the customs border unless imported under inward processing relief (RPA) or authorized bonded warehouse programs.
All shipments from Yevzo Titanium Metal Co., Ltd. are accompanied by full EN 10204 Type 3.1 Mill Test Certificates, documenting exact spectrographic chemical composition (percentages of Ti, Al, V, Fe, C, N, H, O) along with destructive mechanical tensile/yield records, hardness test reports, and dimensional gauge verifications.
The Manufacturer Advantage
Why Iași Engineering Procurers Partner Directly with Yevzo Titanium
Operating since 2013 from the Honeycomb Industrial Park in Baoji's High-Tech Development Zone—China's universally acclaimed "Titanium Valley"—Yevzo Titanium Metal Co., Ltd. delivers unprecedented supply stability, rapid custom prototyping, and direct factory pricing without distributor markups.
- Onsite-Checked Manufacturing Facilities: Verified production floors equipped with over 100 sets of precision multi-axis CNC machining, cold-heading, and thread-rolling machinery.
- Complete Heat-Number Traceability: Raw ASTM B348 Grade 2 and Grade 5 titanium bars sourced directly from domestic Tier-1 sponge processors with verified origin pedigree.
- Comprehensive Thread Tolerancing: Precision ISO metric 6g/6h thread rolling, UNC, UNF, and proprietary fine pitches designed to prevent thread binding under heavy clamp force.
- In-House Surface Treatments: Mechanical micro-polishing, ultrasonic hydrocarbon degreasing, Type II anodization in custom colors, and PVD star/torx coating.
- Flexible Contract Quantities: Prototype batches starting at just 10–30 pieces, scaling seamlessly to 100,000-unit monthly production runs for tier automotive assembly.
- Universal Commercial Terms: Supporting FOB, CFR, CIF Constanța, and door-to-door DDP Iași invoicing with standard euro (€) or US dollar ($) international wires.
Procurement Clarification
Frequently Asked Questions: Sourcing Titanium Studs for the Iași Market
Direct technical and operational answers to typical inquiries handled by our engineering and logistics desk.
How do Grade 5 titanium stud bolts compare to ISO 898-1 Class 10.9 steel studs?
Grade 5 (Ti-6Al-4V) titanium delivers a minimum yield strength of 828 MPa and tensile strength between 895 and 1000 MPa, positioning it closely alongside Class 10.9 steel (which requires 900 MPa yield / 1040 MPa tensile). However, titanium is approximately 44% lighter and completely immune to the hydrogen embrittlement that causes sudden cataclysmic failure in high-strength steels. For applications where weight savings, rotational inertia reduction, or chemical immunity are prioritized, Grade 5 is vastly superior.
What documentation is supplied to satisfy Romanian and EU quality audits?
Every shipment is delivered with an authentic EN 10204 3.1 inspection certificate issued by accredited laboratory metallurgists. This details spectrographic chemical breakdown, room temperature tensile testing, elongation at fracture, and verification of compliance with international standards such as ASTM B348, DIN 912, DIN 6921, or your engineering drawing's specific geometric limits.
What are typical customs clearance steps for receiving goods in Iași, Romania?
Purchasers in Iași require a valid EORI number (Economic Operators Registration and Identification) registered with the Romanian Customs Authority (Autoritatea Vamală Română). When importing under CIF or FOB terms, your freight forwarding agent handles VAT clearance and import duties under TARIC code 81089070. Alternatively, Yevzo Titanium provides seamless DDP (Delivered Duty Paid) Iași delivery, where all import tariffs, transport, and customs documents are handled directly prior to arrival at your facility.
Can Yevzo machine custom double-ended studs with differing thread pitches?
Yes. Our multi-axis CNC turning and Swiss-lathe centers regularly fabricate customized double-ended stud bolts featuring differing thread diameters or pitch standards (e.g., M10×1.5 coarse on the block end and M10×1.25 fine on the nut end, or metric-to-UNF transitions). Simply provide your 2D PDF drawing or 3D STEP/IGES model for engineering review.
Does anodizing change the precision thread pitch of the stud bolts?
No. Titanium anodization is an electrolytic oxidation process that alters the thickness of the natural surface TiO&sub2; layer to refract light at specific wavelengths (creating vivid hues such as gold, electric blue, purple, or rainbow). Unlike heavy paint or electroplated zinc finishes, this oxide layer is measured in nanometers (10 to 200 nm), meaning pitch diameters and class 6g tolerances are preserved with absolute zero dimensional compromise.
What is the standard turnaround time for sample evaluation before batch production?
Standard catalog inventory items are dispatched within 24 to 48 hours for immediate testing. Custom blueprint prototypes typically require 7 to 10 days for tool setup, CNC precision turning, and surface finishing, followed by expedited express air courier transit directly to your testing facilities in Iași within 4 to 6 business days.
Accelerate Your Sourcing Pipeline with Certified Titanium Hardware
Consult with our metallurgists to review custom tolerance stackups, select optimal anti-galling treatments, or obtain factory-direct quotes for your next assembly campaign in Iași.
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