Precision manufactured from premium ASTM B348 certified titanium bar stock in Baoji, China. Fully compliant with DIN, ISO, and aerospace specifications with complete mill test traceability.
The city of Dnipro (formerly Dnipropetrovsk) stands as Ukraine's premier engineering and space-rocket industrial capital. Hosting giant aerospace complexes like the Southern Machine-Building Plant (Pivdenmash), deep-rooted space research bureaus, heavy metallurgical pipe rolling mills along the Dnieper River basin, and an exponentially expanding defense-tech manufacturing sector, Dnipro requires hardware that functions far beyond standard industrial fastener envelopes. In high-vibration aerospace mounts, corrosive metallurgical pickling corridors, and military-grade unmanned systems, legacy galvanized steel (Grade 8.8 / 10.9) and standard AISI 304/316 stainless steel cap nuts repeatedly encounter premature structural failure. They succumb to hydrogen embrittlement, chloride stress corrosion cracking (SCC), and catastrophic mass penalties.
As leading Chinese manufacturers based in the heart of Baoji—China’s Titanium Valley—Yevzo Titanium Metal Co., Ltd. bridges this mission-critical demand by manufacturing high-integrity Titanium Cap Nuts (DIN 1587 high type, DIN 917 low type), custom blind-hole acorn nuts, and integrated flange locking cap nuts. By utilizing vacuum-arc remelted (VAR) ASTM B348 Grade 5 (Ti-6Al-4V) and chemically pure Grade 2 titanium bars, our cap nuts encapsulate exterior bolt threads completely. This dome-shield design delivers a dual functional advantage: an absolute physical barrier that isolates the exposed thread shank from volatile chemical atmospheres, and an exceptionally aerodynamic, snag-free exterior envelope engineered for rapid UAV assembly, pressurized rocketry enclosures, and specialized hydraulic pumps.
Mechanical properties verified according to ASTM B348, ISO 898-1, and DIN 1587 design criteria at 20°C ambient environment.
| Mechanical / Physical Property | Gr5 (Ti-6Al-4V) Cap Nut | Gr2 (CP Titanium) Cap Nut | AISI 316 Stainless Acorn | Class 10.9 Carbon Steel Nut |
|---|---|---|---|---|
| Tensile Strength (Ultimate, Rm) | ≥ 895 – 1,050 MPa | ≥ 345 – 485 MPa | 500 – 700 MPa | 1,000 – 1,040 MPa |
| Yield Strength (0.2% Proof, Rp0.2) | ≥ 828 MPa | ≥ 275 MPa | ≥ 205 MPa | ≥ 900 MPa |
| Density (ρ) | 4.43 g/cm³ | 4.51 g/cm³ | 7.98 g/cm³ | 7.85 g/cm³ |
| Specific Strength (Strength-to-Weight) | 202 kN·m/kg (Elite) | 76.5 kN·m/kg | 63 kN·m/kg | 127 kN·m/kg |
| Corrosion Resistance (Cl-, Acid Mist) | Immune to natural seawater & chlorides | Virtually total chemical immunity | Prone to pitting and crevice SCC | Severe oxidation / requires zinc plating |
| Thermal Service Range | −250°C to +450°C (Cryogenic safe) | −196°C to +315°C | −196°C to +550°C | −40°C to +200°C |
| Magnetic Permeability (μr) | 1.00005 (Non-Magnetic) | 1.00004 (Non-Magnetic) | 1.02 – 1.05 (Slightly magnetic) | Ferromagnetic (> 100) |
Customized engineering supply aligning directly with the operational challenges of regional machinery, defense systems, and processing plants.
Dnipro's renowned aerospace design bureaus develop propulsion modules and ground staging assemblies exposed to liquid oxygen (LOX), nitrogen tetroxide (NTO), and cryogenic temperatures down to −196°C. Our Grade 5 DIN 1587 titanium cap nuts provide an essential dome enclosure that blocks cryogenic vapor condensation while retaining exceptional Charpy impact toughness without brittle transition. Moreover, the 44% mass reduction directly optimizes payload fractions in orbital structures.
As Dnipro emerges as Ukraine's high-tech cluster for military defense drones and electronic warfare hardware, fasteners must withstand violent vibration profiles without thread stripping. Our precision CNC-turned M4, M5, and M6 titanium dome cap nuts seal exposed motor mounts, avionics pods, and rotor arm pivots. The smooth, domed acorn contour eliminates snag hazards for internal telemetry wiring harnesses, while zero-magnetic permeability prevents sensor interference.
Surrounding the Dnipro metropolitan industrial corridor are coke-chemical production units, tube mills, and acid pickling facilities where sulfuric acid fumes, moist hydrogen sulfide, and industrial waste effluents rapidly dissolve ordinary fasteners. Unprotected external threads seize solid within weeks. Grade 2 chemically pure titanium cap nuts form an instantaneously regenerating, self-healing rutile (TiO2) passive oxide layer, guaranteeing 100% thread integrity and effortless future disassembly.
Dnepropetrovsk region’s iron-ore mining machinery and river cargo barge terminals operate in saturated sludge, abrasive rock dust, and brackish fresh-water conditions. Sand, grit, and lime mud constantly lodge in ordinary open hex nut threads, causing galling and thread strip during routine maintenance. Our DIN 917 low-height titanium cap nuts fit tightly into confined hydraulic manifold valve bodies, keeping out abrasive particulates permanently.
Procurement directors and chief mechanics across Dnipro are fundamentally redesigning their fastener supply chains. Three decisive industrial shifts dominate current purchasing strategies:
1. Shift from Post-Soviet GOST Standards to Western ISO/DIN Aerospace Metric Norms: Historically, Ukrainian manufacturers relied on Soviet GOST fastener standards (e.g., GOST 11860-85 cap nuts). Today, as Ukrainian aerospace, railway, and automotive engineering enterprises integrate deeply into the European Union and NATO supply networks, there is an industry-wide pivot toward DIN 1587, DIN 917, and ISO 4032 / DIN 6923 specifications. Chinese manufacturers with direct multi-standard machining lines enable Dnipro manufacturers to obtain dual-certified (GOST-cross-compatible / DIN standard) fasteners seamlessly.
2. Decentralized R&D and High-Mix, Low-Volume (HMLV) Ordering: The rise of agile engineering fabrication workshops in Dnipro requires suppliers who can deliver customized CNC turning runs without prohibitive Minimum Order Quantities (MOQs). While traditional Western European distributors demand 5,000+ unit minimums with 16-week delivery horizons, our direct Baoji factory offers batch manufacturing starting at just 50 to 100 units for non-standard thread pitches (e.g., M10×1.0, M12×1.25 fine thread cap nuts).
3. Elimination of Middleman Markups via Resilient Eurasian Rail/Truck Logistics: Ukrainian importers are deliberately bypassing costly Central European intermediary distributors. Through established multi-modal transit corridors—shipping via air cargo or maritime freight to primary transit hubs in Poland or Romania followed by bonded expedited overland transport directly to Dnipro customs terminals—industrial enterprises reduce procurement expenditures by 30% to 45% while slashing transit latency.
Operating since 2013 from Baoji, China's Titanium Valley, we engineer certainty into every thread.
Located in Baoji High-Tech Zone, we source pure sponge and titanium ingots right from prime certified titanium mills. Every single production batch is delivered with an authentic EN 10204 3.1 Inspection Certificate, detailing complete chemical spectroscopy (O, N, C, H, Fe, Al, V) and room-temperature mechanical tensile/yield stress graphs.
Equipped with over 100 advanced machining units, including multi-axis Japanese CNC Swiss-type automatic turning-milling centers. We machine cap nut internal blind-threads with 6H precision pitch tolerances, completely free of burrs, tool chatter, or micro-cracks that cause catastrophic notch-stress concentration under dynamic fatigue.
Because raw titanium fasteners fastened against titanium studs can experience cold welding (galling), we provide proprietary surface engineering: Type II Anti-Galling Anodizing, Micro-Arc Oxidation (MAO), Physical Vapor Deposition (PVD TiN / DLC coatings), and baked molybdenum disulfide (MoS2) dry film thread lubricants.
Direct answers to the most common engineering, metallurgical, and international freight inquiries.
Submit your DIN specification, thread dimensions, titanium grade (Gr2 / Gr5), target volume, or 2D/3D technical drawings. Our chief fastener application engineers review all inquiries and respond with complete pricing, lead times, and metallurgical certifications within 24 hours.