Gr5 Ti-6Al-4V
±0.005mm
CNC Micro-Tolerance
≥ 895 MPa
Tensile Yield Strength
4.43 g/cm³
Aerospace Density
100%
Batch Traceability
Direct-From-Forge Solutions
High-Precision Titanium Fasteners & Grub Screw Series
Manufactured under stringent ISO standards utilizing certified titanium alloy bar stock. Explore our high-strength metric and imperial fasteners suited for the demanding mechanical tolerances of Triesen and the Rhine Valley manufacturing clusters.
Gr5 Ti-6Al-4V
High Stability
Class 10.9/12.9
Custom CNC
Precision Tapping
UNF / Metric
Blind Cap Nut
Anti-Galling
Technical Whitepaper
Engineering Superiority: Titanium Grub Screws (DIN 913, DIN 914, DIN 916) in Precision Tooling
In mechanical engineering, a grub screw (also known as a blind set screw) fulfills an indispensable retaining function: locking a rotating component, gear, collar, or optical sleeve against a shaft via axial compressive clamping force. While standard industrial fastening relies traditionally on 45H carbon steel or Austenitic A2/A4 stainless steel, critical installations in advanced production hubs such as Triesen, Liechtenstein, encounter severe operational bottlenecks when using standard steel hardware. These issues stem from thermal expansion differentials, centrifugal mass penalties in ultra-high-speed spindles, and chemical aggression in semiconductor and vacuum thin-film coating environments.
By engineering headless grub screws from certified Grade 5 Titanium (Ti-6Al-4V, Werkstoff 3.7165), Zunvo Titanium delivers an extraordinary strength-to-density ratio (tensile yield ≥ 895 MPa at 4.43 g/cm³), reducing inertial load by roughly 44% compared to steel. More crucially, in high-vibration servo-motor assemblies and rotating micro-drives common to Triesen’s high-precision machinery suppliers, titanium fasteners exhibit exceptional fatigue life and superior damping coefficients. Cold-formed rolled threading ensures continuous metal grain flow, which dramatically reduces micro-notch sensitivity and eliminates sudden shear failure at the hex socket junction.
| Physical & Mechanical Parameters | Ti-6Al-4V (Grade 5 Titanium) | A4-80 Stainless Steel (1.4401) | 12.9 Alloy Steel (34CrMo4) | 7075-T6 Hard Anodized AL |
|---|---|---|---|---|
| Mass Density (g/cm³) | 4.43 (Optimized Weight) | 8.00 | 7.85 | 2.81 |
| Tensile Yield Strength (MPa) | ≥ 830 – 895 | 600 | 1100 | 505 |
| Thermal Expansion (10⁻⁶/K) | 8.6 (High Dimension Stability) | 16.0 | 11.5 | 23.4 |
| Magnetic Permeability (µr) | 1.00005 (Practically Non-Magnetic) | 1.015 | Ferromagnetic (>100) | 1.00001 |
| Modulus of Elasticity (GPa) | 114 (High Resilience Shock Absorption) | 200 | 210 | 72 |
| Corrosion Resistance (Chloride/Acids) | Immune (Stable TiO₂ Passive Layer) | Moderate / Pitting Risk | Poor (Corrosion Prone) | Prone to Galvanic Attack |
Grub screw geometry mandates that clamping torque is translated entirely through internal hexagonal (DIN 913/914/916) or Torx (six-lobe) sockets. Under micro-scale conditions (e.g., M2.5, M3, M4 setscrews), tool slippage or cam-out can completely destroy the socket recess, halting an automated assembly line. Zunvo executes micro-broaching tolerances within ±0.005mm and offers secondary PVD (Physical Vapor Deposition) ceramic coatings (TiN, DLC, TiAlN), enhancing socket surface hardness up to 2500–3000 HV. This prevents stripped sockets during recurring tool adjustment cycles in high-throughput Alpine fabrication setups.
Industrial Integration
Precision Applications Serving Triesen's Hi-Tech Ecosystem
The manufacturing infrastructure of the Principality of Liechtenstein—specifically around Triesen, Balzers, and Vaduz—is recognized globally for zero-defect vacuum technology, dental instrumentation, and ultra-precise industrial automation. Titanium grub screws operate at the core of these mission-critical sectors.
High-Vacuum & Thin-Film Deposition Systems
Triesen and its adjacent industrial parks sit at the epicenter of European vacuum coating innovation. Standard zinc-plated or alloy steel grub screws outgas aggressively in high-vacuum (HV) and ultra-high-vacuum (UHV) chambers. Our vacuum-annealed Gr5 titanium set screws maintain zero outgassing, withstand cyclic baking temperatures up to 400°C, and provide uncompromised clamping for optical targets and precision cathode holders without chamber contamination.
Automated Fastening Tooling & Fastener R&D
Liechtenstein is home to world leaders in direct fastening, diamond coring, and heavy-duty drilling systems. The prototype development laboratories in the region frequently integrate our titanium grub screws within specialized transducer mounts, dynamic impact-testing sensors, and rotary hammer counterbalances where steel fasteners fail prematurely due to high-cycle shock waves and inertial mass penalties.
Dental Instruments & Biomedical Robotics
With world-renowned dental and prosthetic manufacturing clusters centered along the Rhine Valley, non-toxic, completely biocompatible components are essential. Grade 5 ELI (Extra Low Interstitial) and Grade 2 titanium grub screws lock articulating joints, micro-gears, and surgical positioning slides where contact with sterilizing autoclaves, saliva, or harsh enzyme cleaners would pit standard surgical-grade stainless steels.
Dynamic Optoelectronics & Alpine Sensor Networks
Precision measurement setups deployed across Alpine altitudes face wide diurnal thermal variations (-25°C to +45°C). Titanium's extremely low coefficient of thermal expansion (8.6 × 10⁻⁶/K) prevents thermal stress relaxation and micro-defocusing in high-frequency LiDAR scanners, alpine weather radar arrays, and optical collimators engineered in Triesen’s cleanrooms.
Macro Industry Outlook
Emerging Procurement Trends in Triesen & Central European Precision Hubs
Procurement directors and mechanical engineers across the DACH region and Liechtenstein are realigning supply chains around sustainability, precision-additive integration, and ultra-high-reliability metrics.
1. Transition from Subtractive Steel to Lightweight Micro-Fasteners
As electric drive actuators and collaborative robotics (cobots) shift toward higher operating frequencies, rotational mass reduction is paramount. Plant managers in Triesen are systematically replacing stainless M3–M6 grub screws with cold-forged titanium variants, trimming assembly inertia by 44% and permitting higher motor step frequencies without thermal overload.
2. Full Material Traceability under European Quality Directives
Liechtenstein's tight economic alignment with Swiss and European aerospace, medical, and machinery standards requires strict conformity. Sourcing fasteners without genuine 3.1 Mill Test Certificates (MTC) introduces immense regulatory liability. Demand has definitively shifted toward integrated manufacturing partners capable of verifying chemical composition (O, Fe, C, N limits) per ASTM B348 and DIN EN 10204 3.1 standards.
3. Rise of Custom Non-Standard Geometry (Cup, Flat, Dog Point)
Off-the-shelf catalog parts no longer suffice for advanced optomechanical designs. Fasteners requiring engineered soft copper tips (to clamp carbide shafts without surface scuffing), extended dog-points for internal locating pins, or deep internal Torx sockets are now routinely specified by local Liechtenstein R&D engineers, demanding rapid 3-day turnaround on custom CNC setups.
Engineering & Purchasing Clarifications
Frequently Asked Questions by Technical Buyers Serving Triesen
Clear, uncompromised answers covering metallurgy, anti-galling protocols, customs documentation, and logistics directly into the Rhine Valley.
How do you prevent thread galling (cold welding) during assembly in automated equipment?
Titanium naturally forms an instantaneous, tenacious titanium dioxide (TiO₂) film. When tightened under dry, high-pressure conditions against female titanium or stainless threads, this oxide layer can break down, leading to microscopic friction welding (galling). To prevent this in precision assemblies, we offer three factory solutions: micro-thin Physical Vapor Deposition (PVD) Diamond-Like Carbon (DLC) coating, MoS₂ dry lubricant coatings, or specialized anti-seize lubricants with nickel or copper flakes tailored for cleanroom or vacuum compatibility.
Can Grade 5 titanium grub screws handle equivalent tightening torque to Class 12.9 alloy steel?
Grade 5 Ti-6Al-4V provides a tensile strength of 895–1000 MPa, making it directly comparable to Class 8.8 and near Class 10.9 structural steel, but slightly lower than 12.9 alloy steel (1220 MPa). However, because titanium’s shear strength and elasticity modulus (114 GPa) provide greater mechanical elongation under dynamic load, titanium grub screws retain pre-load significantly better in high-vibration environments. For high-torque locking, we recommend switching to Torx (star) drive variants to maximize engagement surface and prevent socket stripping.
What is the standard lead time for door-to-door delivery into Triesen, Liechtenstein?
For standard catalog DIN 913, DIN 914, and DIN 916 sizes stocked in our warehouse, shipments leave within 24 hours via DHL Express, FedEx Priority, or UPS Air, reaching Liechtenstein customs clearing facilities in Zurich within 3 to 5 business days. For customized non-standard drawings, rapid prototyping samples take approximately 3 days, followed by mass CNC production completed in 7 to 15 days, accompanied by complete European export clearance documents.
Do you supply complete EN 10204 3.1 inspection certification and raw material heat tracing?
Yes. As a verified manufacturer situated directly in Baoji—China’s Titanium Valley—every single production run is linked directly to the smelting ingot and extrusion bar heat number. We routinely deliver complete 3.1 inspection certificates, spectroscopic chemical composition analysis (verifying Al 5.5-6.75%, V 3.5-4.5%, Fe < 0.3%, O < 0.2%), tensile elongation test records, and CMM optical dimensional reports with every order.
What point styles are available for custom titanium set screw fabrication?
We machine all standard DIN and custom point profiles: Flat Point (DIN 913) for frequent resetting against ground shafts; Cone Point (DIN 914) for permanent pivot seating into detents; Dog Point / Full Dog (DIN 915) acting as retaining dowels in shaft grooves; and Cup Point (DIN 916) for maximum bite and anti-backout performance under dynamic radial thrust.
What are the minimum order quantities (MOQ) for custom-engineered prototypes?
To support early-stage product engineering and testing in Triesen’s R&D facilities, our MOQ for drawing-based custom titanium parts starts at just 100 pieces. For bulk production orders, batch quantities typically range from 1,000 to 50,000 pieces with tiered pricing structures.
Manufacturing Heritage
Engineered in Baoji's Titanium Valley, Delivered Directly to Triesen
Founded in 2015, Zunvo Titanium Products Co., Ltd. operates a high-precision manufacturing campus spanning 1,000 to 3,000 m² in Baoji, China's definitive titanium capital. Operating over 50 precision CNC multi-axis turning centers, cold heading, and thread rolling machines, our onsite-verified workforce of 101–200 titanium specialists bridges the gap between raw aerospace metallurgy and microscopic fastener tolerance.
66% Verified Buyer Reorder Rate
≤ 7h Rapid Inquiry Response Time
100% Go/No-Go Gauge Quality Control
In-House Voltage Anodizing & PVD
Ready to Optimize Your Hardware Specs?
Upload your 2D/3D CAD drawings (STEP, IGES, DXF) or request standard DIN 913/914/916 samples for prototype trials in Triesen.
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