Aviation Spec
Anodized High Strength GR5 Titanium Alloy M6*15 Umbrella Head Bolts
- Grade: Ti-6Al-4V (Grade 5)
- Tensile: ≥ 895–1000 MPa
- Standard: Custom Modified
Precision Inventory
Featured Titanium Fasteners & CNC Hardware Selection
Direct mill-to-workbench deliveries engineered under ISO 9001 and ASTM standards. Each component undergoes strict optical coordinate inspection and metallurgical verification before European dispatch.
Stem Precision
M5 M6 M8 Wholesale Titanium Alloy Hexagon Head Industrial Grade Bright Finish Bolts
- Sizes: M5, M6, M8 Metric
- Finish: Electro-Polished
- Application: Performance Cycling
DIN 933 Metric
Wholesale Titanium Flange Hex Nut M4 M5 M6 M8 M10 CNC Machine DIN933 CLASS8.8
- Range: M4 through M10
- Tolerance: ISO 965 6H
- Yield: Class 8.8 Equiv.
Brake Grade
GR5 Titanium Alloy Anodized Brake Bolts Modified High Performance Class 10.9 & 12.9
- Hardness: HRC 36–39
- Thread: Rolled (Fatigue Resistant)
- Coating: Thermal Hard Anodized
Rotary Disc
Titanium Bolts Motorcycle Brake Disc Bolt M6 X 20mm High Precision Screw
- Dimension: M6 × 20mm Pitch 1.0
- Seat: Low-Profile Countersunk
- Weight: 44% Less than Steel
Custom Anodized
Titanium Finish Bolt M6x12 16 20 25 30 35mm Modification Burnt Blue
- Lengths: 12mm–35mm In Stock
- Color: PVD Burnt Rainbow/Blue
- Corrosion: 1000h Salt Spray Passed
Wheel Dynamics
GR5 Titanium Wheel Lug Bolts Lightweight High Strength Flat Head UNC for Custom Wheels
- Thread: UNC / UNF / Metric
- Head: Countersunk Flat Seat
- Process: Hot Forged & CNC Turned
Micro Hardware
Titanium Bolts with Flat Head Screws M1.6 Micro Thread Industrial Grade
- Diameter: M1.6 Precision Micro
- Standard: DIN 965 / DIN 7991
- Field: Electronics & Drone Frame
Engineering Whitepaper
Technical Authority: Titanium Countersunk Screws in High-Stakes Assemblies
Countersunk fasteners, specifically engineered to specifications such as DIN 7991, ISO 10642, and ASME B18.6.3, are indispensable wherever flush-surface aerodynamics, non-interfering rotational clearances, or compact geometric nesting are demanded. When manufacturing countersunk screws from Grade 5 Titanium (Ti-6Al-4V) or Grade 2 Commercially Pure (CP) Titanium, advanced metallurgical dynamics govern mechanical performance. Unlike standard low-carbon or zinc-plated structural steel fasteners, titanium’s unique modulus of elasticity (approximately 114 GPa versus steel’s 210 GPa) offers exceptional resilience and shock absorption, while exhibiting near-zero vulnerability to atmospheric corrosion, chlorides, and harsh de-icing chemicals.
The critical failure node in countersunk screws occurs at the transition junction between the flat head angle (typically 90° under DIN standards or 82° under Imperial standards) and the threaded shank. Cheap cold-formed fasteners regularly suffer from shear failure along this shear plane due to micro-fissures and improper fiber flow lines. At our Baoji Titanium Valley manufacturing plant, our production protocol uses precision CNC multi-axis turning paired with rolled threading techniques. Thread rolling reorganizes the titanium crystallographic grain flow along the flank contours rather than severing them, drastically elevating fatigue cycle endurance under alternating vibrational stress.
895+ MPa
Tensile Yield (Gr5)
4.43 g/cm³
Material Density
±0.005mm
CNC Shank Tolerance
Furthermore, flush fasteners require strict countersink hole geometry and proper galling prevention protocols. Because titanium exhibits an affinity to self-weld under extreme localized frictional heat (galling), Yevzo coats fasteners with specialised dry-film lubricants, hard anodized layers, or physical vapor deposition (PVD) finishes. When mating titanium countersunk screws with aluminium structural bulkheads, our engineering export department provides bespoke galvanic isolation recommendations (including passivation procedures and fluoropolymer non-conductive barrier washers) ensuring lifetime structural integrity without galvanic decay.
Fastener Metallurgy Matrix: DIN 7991 Equivalent
| Mechanical Properties | Ti-Gr5 (Ti-6Al-4V) | Ti-Gr2 (CP-Ti) | Grade 8.8 Steel |
|---|---|---|---|
| Tensile Strength (Rm) | ≥ 895–1050 MPa | ≥ 345–485 MPa | 800–830 MPa |
| Yield Strength (Rp 0.2) | ≥ 828 MPa | ≥ 275 MPa | 640 MPa |
| Elongation at Break (A5) | ≥ 10% | ≥ 20% | ≥ 12% |
| Volumetric Mass Density | 4.43 g/cm³ | 4.51 g/cm³ | 7.85 g/cm³ |
| Elastic Modulus (E) | 114 GPa | 105 GPa | 210 GPa |
| Seawater Resistance | Immune (<0.001 mm/y) | Immune | Requires Plating |
| Recommended Hardness | HRC 32–38 | HRB 80–90 | HRC 22–32 |
Data confirmed via ASTM B348 bar inspection standards & ISO 898-1 mechanical testing criteria.
Kraków Regional Applications
Empowering Małopolska’s Advanced Engineering Sectors
How our precision Chinese titanium engineering directly aligns with the technical supply chain requirements across the industrial landscape of southern Poland.
Aerospace & Aviation Corridor
Within reach of the Aviation Valley (Dolina Lotnicza) corridor extending through Małopolska, our DIN 7991 Gr5 countersunk screws serve UAV airframe structures, nacelle access hatches, and interior honeycomb panels where weight, laminar airflow, and shear tolerance are non-negotiable.
Automation & Robotic Manipulators
Kraków’s booming tech and mechatronics cluster in the Zabłowie and Rybitwy districts requires low-inertia kinetic assemblies. Titanium countersunk fasteners mount flush end-effector plates and high-speed robotic linkages without interfering with rotating sensor paths.
Motorsport Tuning & Supercars
Specialist automotive preparation centers and motorcycle racing mechanics across Kraków utilize our Ti-6Al-4V flush-mount screws for brake rotor mounts, aerodynamic diffusers, and carbon-fiber splitters, cutting unsprung mass by over 40% while surviving extreme heat.
Chemical & Salt Processing Hardware
Situated near the historic mineral-rich industrial districts of Wieliczka and Skawina, chemical manufacturing apparatus demands resistance to chloride-induced pitting. Grade 2 CP titanium countersunk screws guarantee zero corrosion in continuous acidic contact.
Medical Instrumentation Systems
Kraków’s biomedical technology firms demand strictly biocompatible materials. Our ASTM F136 compliant titanium fasteners assemble surgical imaging cradles, high-field MRI non-magnetic structures, and laboratory sterilization cassettes without paramagnetic interference.
Pro-Level Cycling Components
With southern Poland’s mountainous terrain attracting elite mountain biking and gravel races, boutique bicycle brands integrate our flush titanium screws into bottom-bracket cable guides, stem clamps, and dropouts for weatherproof, ultra-lightweight resilience.
Market Dynamics
Procurement Trends & Supply Chain Logistics for Kraków
Strategic manufacturing sourcing insights connecting Shaanxi's raw titanium reserves directly to Southern Poland's production lines.
The Shift Toward Direct-From-Source Mill Contracting
Procurement teams across the Małopolska Voivodeship are shifting away from regional European stockists who charge steep markups on titanium fasteners. Instead, OEM engineering managers in Kraków are entering direct contracts with source factories located in Baoji, China—globally known as "Titanium Valley." This direct channel unlocks full heat-lot mill traceability (EN 10204 3.1 certification), eliminates supply chain middlemen, and provides tailored thread configurations (e.g., DIN 7991 countersunk heads paired with fine pitch threading) that standard European distributors simply do not inventory.
Optimised Freight Channels to Balice Airport & Małaszewicze
Modern international logistics makes high-volume titanium screw delivery to southern Poland reliable and cost-effective. For rapid prototyping and production batch orders under 300 kg, express air freight routes deliver directly into Kraków John Paul II International Airport (KRK - Balice) within 4 to 6 business days. For bulk industrial shipments exceeding several metric tons, the New Silk Road China-Europe Railway Express routes via the Małaszewicze dry port terminal directly to Kraków rail logistics depots in 16 to 20 days. Our dedicated export department handles complete EU customs clearance, CE conformity documentation, and DDP (Delivered Duty Paid) Incoterms for a seamless arrival.
Direct Cost Reduction Index
By eliminating domestic EU multi-tier distributor margins, Kraków assembly plants routinely achieve 30% to 45% component cost savings while maintaining equivalent or higher tensile properties.
Regulatory Compliance & Traceability
Full chemical analysis per ASTM E1409/E1447 (gas chromatography determination of C, O, N, H) and RoHS/REACH compliance documentation supplied with every export carton.
Enterprise Strengths
Why European Industry Partners With Yevzo Titanium
Operating since 2013 from Baoji, China, Yevzo Titanium Metal Co., Ltd. combines heavy raw metal supply-chain integration with high-precision CNC multi-spindle production.
Epicenter of Titanium
Headquartered in Honeycomb Industrial Park, Baoji High-Tech Zone, we sit directly beside the primary sponge processing facilities. We command priority raw material selection and pass savings directly to our clients.
100+ Advanced CNC Units
Equipped with high-precision multi-axis Swiss turn-mill centers and optical sorting units. We effortlessly execute DIN 7991 countersunk sockets, Torx T25/T30 recesses, and rolled metric/imperial threads.
Independent QA Protocol
Each production batch undergoes 100% thread Go/No-Go plug gauge inspection, profile projector micro-checks, and destructive tensile testing. Onsite-checked and verified by international verification audits.
Flexible European Trade
Accepting multi-currency settlements (EUR, USD, PLN, GBP) and flexible Incoterms including EXW, FOB, CIF, DDP. We cater to rapid small batches (MOQ 20 pcs) up to full container shipments.
Procurement Clarity
Frequently Asked Questions by Kraków Engineers
Essential engineering and commercial facts regarding our titanium countersunk and custom screw exports into Poland.
What dimensional standards are used for titanium countersunk screws exported to Poland?
Our countersunk screws conform strictly to European metric standard DIN 7991 and international standard ISO 10642 (hexagonal socket countersunk head), as well as ISO 14581 / DIN 965 (Torx drive flush head). We also machine to ASME/ANSI B18.6.3 for American specification equipment. Every screw is machined with standard 90° head angles (or 82° for imperial threads) with CNC-controlled socket depth to prevent tool slippage under recommended torque ratings.
Can Yevzo provide EN 10204 3.1 inspection certificates for Kraków aerospace projects?
Yes. Every order dispatched to European industrial clients can be accompanied by an official EN 10204 3.1 Mill Test Certificate (MTC). This document verifies chemical composition (analyzed by spectral gas chromatography), mechanical tensile yield strength, elongation percentages, and heat-treatment batch numbers traced back to the virgin titanium ingot from Baoji.
How do you manage customs clearance, VAT, and logistics directly into Kraków?
We offer full DDP (Delivered Duty Paid) terms via air and rail forwarders. Under DDP terms, our European freight partners handle import customs declaration, Polish import duty, and documentation at the EU border. The shipment is delivered directly to your facility door in the Kraków metropolitan area (such as Czyżyny, Nowa Huta, or Niepołomice Industrial Zone) without bureaucratic delays for your internal receiving department.
How does titanium countersunk bolt strength compare with 10.9 & 12.9 grade steel?
Grade 5 Ti-6Al-4V delivers a nominal tensile strength of 895–1000 MPa, directly surpassing Class 8.8 structural steel (800 MPa) and approaching Class 10.9 steel (1040 MPa), while achieving a 44% weight reduction. For applications calling for Class 12.9 mechanical equivalence, we offer custom cold work-hardened Grade 5 ELI or aged Ti-6Al-4V that achieves up to 1100+ MPa without brittleness.
What measures prevent thread galling during installation into aluminium or steel blocks?
Titanium has a tendency to gall when driven at high speed against metal threads. We recommend applying anti-seize paste (molybdenum disulfide or nickel-based anti-seize compounds) prior to fastening. For cleanroom or dry assembly environments in robotics, we supply our titanium screws with physical vapor deposition (PVD) anti-friction coatings or micro-arc oxidation finishes that eliminate galling risks without wet lubricants.