Brake Hardware
OEM CNC Machining Gr5 Titanium Disc Brake M8x23 Screws
- Material: Ti-6Al-4V (Grade 5)
- Thread Process: Form-Rolled Class 6g
- Application: Motorcycle Braking Disc
Precision Manufacturing Showcase
Featured Titanium Hardware & Custom Machined Components
Explore our premier production catalog engineered from certified Grade 5 (Ti-6Al-4V) aerospace bar stock and pure titanium. Each component undergoes strict thread-rolling, CNC multi-axis contouring, micro-deburring, and spectral material verification.
DIN 7991 Flat
M6x25 Titanium Alloy Countersunk Flat Head Bolt
- Standard: DIN 7991 / ISO 10642
- Drive Style: Hex / Torx Anti-Strip
- Yield Strength: ≥ 830 MPa
Cycling Tech
Factory Custom Ticat Ti Stem Top Cap with M6*30 Bolt
- Dimensions: 1-1/8" Steerer (M6x30mm)
- Finishing: Type II Hard Anodizing
- Total Weight: ≈ 7.2 grams total assembly
DIN 6921 Flange
GR5 Titanium Hexagon Head Flange Bolt (M5–M14)
- Thread Pitch: Metric Standard & Fine 1.25
- Design: Integrated Load Washer Flange
- Colors: Burned Blue, Gold, Purple, Raw
Micro Precision
Titanium M2 / M2.5 DIN 912 Micro Torx Cylinder Screws
- Diameters: M1.6, M2.0, M2.5, M3.0
- Tolerance: ISO 4762 ±0.01mm Precision
- Industry: Optical, Drone, Electronics
High-Temp Exhaust
12-Point Ti-6Al-4V Exhaust Flange Nuts M8x1.25
- Thermal Range: Continuous to 420°C (788°F)
- Geometry: Double Hexagon 12-Pt Profile
- Weight Cut: 44% Lighter than Inconel/Steel
Wire EDM / EDC
Wire EDM Multifunctional Bolt Tactical Titanium Pen
- Process: 5-Axis CNC + Precision Slow Wire EDM
- Mechanism: Custom Bolt-Action Linear Slider
- Body: Solid Aerospace TC4 Billet
Custom Turning
TC4 CNC Machined Paracord Bead Begleri EDC
- Bore Size: 5.5mm Chamfered Paracord Path
- Surface: Stonewashed, Flame Anodized
- Machining: Multi-Faceted Knurl Contouring
2013+
Established in Baoji Valley
1,000+
Global Tier-1 & OEM Clients
±0.005mm
CNC Swiss Turning & EDM Precision
≤ 4Hours
Engineering Response Rate 95.7%
Industrial Heritage & Quality Authority
Baoji Titanium Cluster Advantage: Raw Stock to Micro Finished Hardware
Headquartered in Baoji, Shaanxi—globally recognized as "China's Titanium Valley"—Velnora Titanium Industry integrates primary smelting ingot access, multi-pass cold drawing, aerospace thread rolling, and Japanese precision CNC centers under one strict quality audit protocol.
In-House Multi-Axis CNC & Wire EDM
Equipped with citizen Swiss-type CNC automatic lathes, 4-axis and 5-axis vertical machining centers, and ultra-slow wire EDM machinery. We hold micro-tolerances down to ±0.005mm on safety-critical automotive brake pins, hollow-drilled racing studs, and medical orthopedic fixtures without secondary setup distortion.
✓ Real-time machining video feed & progress logs supplied for all OEM batches.
100% Raw Stock Metallurgical Control
We machine exclusively from Grade 5 Ti-6Al-4V (TC4), Grade 2 Commercially Pure (CP) titanium, and proprietary Timascus / Mokuti billet. Each raw batch includes direct XRF spectrometry, ultrasonic porosity inspection, and EN 10204 3.1 chemical & physical mill test certificates detailing hydrogen and oxygen ppm.
✓ Complete heat-number traceability from vacuum consumable arc melting to boxed parts.
Surface Science & Anti-Galling Anodizing
Titanium naturally suffers from high surface galling during thread tightening. We solve this via specialized high-voltage Type II anodization, micro-bead blasting, PVD (TiN, AlCrN, DLC) hard coatings, and precision cryogenic micro-finishing. We generate vibrant, dye-free interference coloration from 15V to 110V.
✓ Extreme wear resistance, zero thread binding, and zero measurable weight addition.
Production Transparency
Live Visual Inspection & Direct Engineer Collaboration
Unlike trading brokers who mask sub-tier workshops, Velnora operates a direct, open-shop manufacturing workflow. International buyers receive live high-definition video walkthroughs, thread gauge optical comparator readings, and dimensional CMM reports before international air export.
Our frontline engineers review your 3D CAD files (STEP, IGES, SolidWorks, DWG, PDF) within 4 working hours. We advise on cost-saving design optimizations—such as converting machined threads into cold-rolled threads to increase cyclical fatigue resistance by over 30% along stress-concentration roots.
Metrology & Quality Systems
Comprehensive Quality Assurance to DIN, ISO, ANSI & JIS
Fastener joint failure under vibration is unacceptable in high-stress racing or medical assemblies. Our metrology laboratory validates pitch diameter tolerances, core concentricity, drive-socket broaching depth, and surface roughness (Ra down to 0.4 μm).
We manufacture strictly to DIN 912 (Socket Caps), DIN 6921 (Hex Flange), DIN 7991 (Countersunk), DIN 985 (Nyloc), and bespoke custom drawings with serialized laser batch marking. Every export crate is double-sealed with desiccants and moisture-barrier vacuum packaging.
Metallurgical Engineering Whitepaper
Titanium Alloys vs. Aerospace Aluminum & Fastener Steels
Selecting the proper grade is critical for preventing shear yield, galvanic battery corrosion, and thermal micro-creep. Review our empirical comparison matrix engineered to guide B2B hardware procurement decisions.
| Engineering Property | Gr5 Ti-6Al-4V (TC4) | Gr2 Commercially Pure | AISI 304 / 316 Stainless | 7075-T6 Hard Aluminum | Class 10.9 Alloy Steel |
|---|---|---|---|---|---|
| Density (g/cm³) | 4.43 | 4.51 | 7.93 | 2.81 | 7.85 |
| Tensile Strength (MPa) | 895 – 1050 | 345 – 480 | 515 – 650 | 570 | 1040 |
| Yield Strength (0.2% MPa) | 828 – 920 | 275 – 380 | 205 – 240 | 505 | 940 |
| Weight Saving vs. Steel | ≈ 44% Lighter | ≈ 43% Lighter | Baseline | ≈ 65% Lighter | Baseline |
| Chloride & Seawater Resistance | Immune (No Pitting) | Immune (Passivated) | Susceptible to Crevice Pitting | Poor (Rapid Exfoliation) | Severe Rust / Catastrophic |
| Operating Temp Threshold | -250°C to +420°C | -196°C to +300°C | -200°C to +600°C | Max 120°C (Softens) | -40°C to +400°C |
| Thermal Conductivity (W/m·K) | 6.7 (Insulating) | 16.4 | 16.2 | 130 | 43 |
| Recommended Optimal Use | Motorsport, Braking, Rotor Pins | Chemical Valves, Marine Hull | General Sheet Metal Hardware | Low-Torque Cosmetic Mounts | Heavy Industrial Structural |
*Note on Fastener Replacement: Ti-6Al-4V Grade 5 directly matches and exceeds Property Class 8.8 structural steel. While its yield strength approaches Class 10.9 steel, titanium possesses a lower modulus of elasticity (114 GPa vs. 210 GPa for steel), resulting in double the elastic elongation under tension. Always verify clamping stretch and use adjusted torque values.
Procurement Intelligence 2025–2030
Future Procurement Trends in Titanium Precision Parts
Strategic sourcers and supply chain directors face shifting raw material markets, carbon borders, and digitized quality expectations. Here are the macro procurement trends dictating high-precision titanium purchasing.
Raw Sponge Supply Volatility
Geopolitical re-alignments in aerospace grade titanium sponge have prompted global brands to bypass Western tier-1 distributors in favor of direct upstream partnerships in Baoji, China. Direct factory contracts ensure stable titanium raw bar reserves and fixed-cost price caps across 12-month delivery schedules.
Closed-Loop Chip Recycling
Sustainability mandates (Scope 3 carbon footprinting and EU CBAM tariffs) are accelerating demand for certified recycled titanium chips. Modern factories re-smelt clean CNC titanium turnings back into non-critical aerospace Grade 2 and Grade 5 ingots via Vacuum Arc Remelting (VAR), lowering raw part carbon cost by over 40%.
Digital Twin Inspection & Telemetry
Paper-only inspection reports are rapidly becoming obsolete. Global procurement teams now require digitized Coordinate Measuring Machine (CMM) data point clouds, live laser micrometer logs, and cloud-archived video verifications for every manufactured serial run, guaranteeing instantaneous assembly-line compatibility.
Rapid Prototyping to Low-Volume High-Mix
B2B buyers are moving away from massive 50,000-piece single runs that freeze capital. Modern precision CNC workshops leverage high-speed toolpath simulators and quick-change modular fixturing to provide Low-Volume High-Mix (LVHM) titanium runs—delivering orders from 50 to 500 units within 10 to 14 business days.
Technological Frontiers
Technological Innovations in Titanium Precision Machining
Titanium is notoriously difficult to machine due to its low thermal conductivity, high chemical reactivity at elevated cutting temperatures, and elastic springback. Here is how modern precision engineering overcomes these historical limits.
Cryogenic Liquid Nitrogen CNC Milling
Traditional flood coolants vaporize before penetrating the cutting zone of high-tensile TC4 bar stock, causing work hardening and micro-chipping of carbide endmills. State-of-the-art multi-axis machines now inject high-pressure cryogenic liquid CO2 or liquid nitrogen (-196°C) directly through the tool spindle. This prevents thermal buildup, extends tool life fourfold, and preserves pristine surface grain orientation.
Cold Thread Rolling vs. Single-Point Cutting
While low-cost workshops cut screw threads on simple CNC turning centers, this tears across the grain flow of the titanium bar, creating micro-notches that act as fracture origins under cyclic vibration. Advanced manufacturing uses dual-cylindrical cold thread rolling dies to plastically displace the metal. This burnishes the root, work-hardens the surface, and boosts dynamic fatigue resistance by over 30%.
Micro-Arc Oxidation (MAO) & PVD Coatings
Conventional anodization forms a thin passivated surface layer between 10nm and 200nm thick. To resist the brutal tribological sliding friction of motorsport brake calipers and engine wristpins, factories now employ Micro-Arc Oxidation (MAO/PEO). This transforms the outer titanium envelope into a thick ceramic-phase TiO2 layer possessing diamond-like Vickers hardness above 1200 HV.
Technical Procurement FAQ
Frequently Asked Engineering & Sourcing Questions
Direct, empirical answers to the technical inquiries our engineering desk receives from motorsport constructors, medical device integrators, and industrial buyers worldwide.
Which titanium grades are best suited for structural vs. chemical applications?
For high-load structural fasteners, racing bolts, engine valve retainers, and wheel lugs, Grade 5 Ti-6Al-4V (also designated TC4 or ASTM B348 Gr5) is the standard requirement. It yields an ultimate tensile strength exceeding 895–1050 MPa with high shear yield. Conversely, for chemical process tanks, marine fluid piping, and decorative jewelry where extreme elongation and deep formability are required without high tensile stress, Grade 2 Commercially Pure (CP) titanium is specified due to its higher ductility and lower raw material cost. For luxury everyday carry (EDC) items, we forge multi-layer Timascus (Mokuti) billets comprising varying alloys (Gr2 + Gr5) that react differently to heat, forming Damascus-style color patterns.
How does Velnora prevent thread galling (cold welding) during high-torque assembly?
Galling occurs when friction removes the microscopic passivated oxide layer on titanium threads, bringing clean metal crystals into contact under load and cold-welding them together. We prevent this through three complementary methods: 1) Cold Thread Rolling to achieve mirror-smooth root surfaces (Ra ≤ 0.4 μm) rather than rough cut ridges; 2) Controlled Type II Hard Anodizing or PVD/DLC Coating that deposits an anti-friction ceramic barrier layer; and 3) Anti-Seize Assembly Guidelines. We instruct technicians to apply copper- or molybdenum-disulfide-based anti-seize paste and reduce recommended nominal steel torque specifications by 15%–20% to account for the lowered friction coefficient.
Can a Grade 5 titanium bolt directly replace a Class 10.9 or 12.9 steel bolt?
Grade 5 titanium is a direct 1-to-1 substitute for standard Property Class 8.8 structural steel, providing 44% immediate weight savings with vastly superior corrosion immunity. However, titanium should NOT be blindly dropped into joints engineered for Class 10.9 (1040 MPa) or Class 12.9 (1220 MPa) fasteners without engineering calculation. While titanium's ultimate tensile strength (≈950–1000 MPa) approaches Class 10.9, its modulus of elasticity is roughly half that of steel (114 GPa vs 210 GPa). Under the same clamp load, a titanium bolt stretches twice as far, changing the pre-load tension dynamics. In critical racing brake caliper or suspension mounting joints, engineers typically step up by 1mm in bolt diameter (e.g., M8 steel replaced by M10 titanium) to preserve stiffness while maintaining net mass reduction.
What 3D CAD formats and drawing standards do you require for custom machining?
We work directly with native STEP (.stp), IGES (.igs), Parasolid (.x_t), and SolidWorks (.sldprt) 3D models alongside a companion 2D drawing in PDF or DWG format indicating critical dimensions, Geometric Dimensioning and Tolerancing (GD&T) callouts, thread classes (e.g., ISO 6g or ANSI 2A), and required surface finishes. If you only possess an original OEM sample component to be cloned or upgraded, our metrology team uses high-precision 3D optical scanning and CMM probing to reverse-engineer parametric manufacturing drawings within 24 hours.
What are your standard Minimum Order Quantities (MOQs) and prototype lead times?
For standard catalog titanium fasteners (DIN 912, DIN 6921, disc rotor bolts) maintained in raw bar stock, our standard MOQ is 100 to 200 pieces per specification. For highly specialized custom parts involving multi-axis CNC milling or Wire EDM, prototype sample runs are available starting at 10 to 50 pieces. Premium Timascus (Mokuti) collector components can be ordered from 1 piece. Typical prototype turnaround is 5 to 7 working days, with full production batches shipping via DHL/FedEx Express in 15 to 20 business days.
How does Velnora verify material composition and avoid counterfeit titanium scrap?
Due to our geographic location in Baoji, we procure our primary billet directly from tier-1 aerospace sponge titanium smelters. Incoming bar stock undergoes handheld X-ray fluorescence (XRF) alloy spectrometry to confirm exact element percentages (Aluminum 5.5–6.75%, Vanadium 3.5–4.5%, Iron ≤ 0.3%, Oxygen ≤ 0.2%). We provide complete EN 10204 3.1 Mill Test Certificates (MTC) certifying mechanical tensile properties and chemical purity for every batch. Furthermore, we invite third-party inspection firms (SGS, TÜV, Bureau Veritas) to conduct on-site sampling audits at the client's request prior to export departure.
Request a Precision Titanium Machining Quote Today
Whether you are replacing heavy steel fasteners with ultra-light Gr5 bolts, prototyping a complex multi-axis aerospace bracket, or mass-producing anodized EDC assemblies, our Baoji engineering floor is ready to review your tolerances, optimize your toolpaths, and supply sample hardware.