Heavy Duty
High Quality GR5 Titanium Alloy Socket Head Bolts & Nuts Class 8.8
- Material: Ti-6Al-4V Grade 5
- Tensile: ≥ 895–950 MPa
- Finish: CNC Plain Machined
Industrial Fastening Hardware Catalog
High-Integrity Titanium Bolts & Hexagonal Fasteners
Manufactured to strict DIN, ISO, and custom JIS standards. Designed to deliver zero-corrosion performance and severe cold-impact toughness for engineering buyers across Sapporo and Hokkaido Prefecture.
In Stock
DIN7991 Titanium Countersunk Hex Flat Head Screws M3 M4 M5
- Standard: DIN 7991 / ISO 10642
- Drive: Hexagon Socket
- Feature: Flush Surface Seating
Torx Profile
GR5 Titanium Torx Round Head Bolts Metric Fine Thread
- Thread: Precision Metric Fine
- Drive: Torx Star High-Torque
- Application: Motorcycle & Chassis
Brake Systems
Titanium Hexagonal Step Flat Head Disc Brake Caliper Bolts
- Geometry: Precision Step Shoulder
- Locking: Serrated Washer Head
- Weight Saving: 44% vs. Steel
DIN Standard
CNC Titanium Hex Flange Nuts M4–M10 DIN6923 Class 8.8
- Grade: Ti-6Al-4V Grade 5
- Flange: Smooth or Serrated Face
- Compatibility: Anti-Galling Tolerances
Race Caliber
Titanium Brake Rotor Bolts M6 x 20mm Lightweight CNC
- Size: M6 x 20mm Pitch 1.0
- Heat Treat: Annealed Tensile Relief
- Target: Rotor & Hub Fastening
Factory Direct
Full-Thread Titanium Hex Bolts ISO 4018 M8 to M16
- Standard: ISO 4018 / DIN 933
- Thread Type: Full Shank Machine Cut
- Quality: 100% Thread Gauge Verified
Micro & Precision
Micro Titanium Flat Head Precision Fasteners M1.6 Industrial
- Profile: Precision Miniature M1.6
- Standard: Electronic & Sensor Grade
- Alloy: Gr2 Pure / Gr5 Alloy
Manufacturer Integrity & Provenance
Why Sapporo Industrial Buyers Partner Directly with Yevzo
Operating since 2013 from the epicenter of China's "Titanium Valley" in Baoji, Shaanxi, Yevzo Titanium Metal Co., Ltd. eliminates broker intermediaries, delivering fully certified ASTM, DIN, and ISO aerospace-to-industrial grade fastening systems.
2013
Established in Baoji
100+
CNC Machining Centers
−44%
Weight vs. Steel 8.8
5.0 / 5.0
Buyer Feedback Rating
Upstream Raw Stock Traceability
Direct integration with Baoji titanium sponge mills guarantees heat-lot chemical verification under ASTM B348. Every batch is certified with tensile, yield, and ultrasonic porosity verification before bar turning.
CNC Multi-Axis Dimensional Tolerances
Heads, shanks, and threads are turned and cut on multi-axis Japanese and German-configured lathes. We maintain tight 6g / 6H thread tolerances, eliminating thread binding and erratic preload under sub-zero thermal cycling.
Advanced Surface Passivation & Anodizing
From plain machined natural titanium oxide to electrolytic micro-arc oxidation and vibrant aesthetic anodizing (gold, burned titanium, electric blue), our treatments safeguard thread runout while eliminating micro-fretting.
Streamlined Logistics to Sapporo & Otaru
Complete export qualification across FOB, CIF, DDP, and door-to-door express delivery. Direct shipping routes to New Chitose Airport (CTS) and the Port of Ishikari-Wan-Shinko / Port of Otaru ensure zero logistics latency.
Industrial Engineering White Paper
Localized Engineering Applications in Sapporo's Harsh Climates
Hokkaido represents one of the world's most demanding operating environments for structural hardware. Combining coastal maritime salinity with continuous winter application of chemical deicing agents (calcium chloride and sodium chloride), standard zinc-plated and carbon steel bolts undergo rapid crevice corrosion and hydrogen embrittlement. Titanium hex bolts provide the ultimate metallurgical antidote.
1. Sub-Zero Automotive, EV & Snowplow Machinery
Sapporo experiences prolonged sub-zero temperatures (dropping well below -10°C) alongside heavy winter salting on expressways like the Sasson and Do-O Expressways. Carbon steel 8.8 and 10.9 bolts frequently freeze, pit, or seize under chloride attack.
Our Gr5 (Ti-6Al-4V) Hex Head Bolts replace steel fasteners in commercial utility fleets, municipal snowplow mountings, and performance wheel assemblies (M12/M14 lug bolts). They retain ductile toughness at extreme negative temperatures without experiencing ductile-to-brittle transition phenomena.
2. Coastal Marine, Aquaculture & Harbor Infrastructure
Along Ishikari Bay, Otaru Harbor, and Hokkaido's seafood processing corridors, machinery is assaulted by raw seawater mist and alkaline processing chemicals. Commercial fisheries rely on automated processing, filleting conveyors, and deep-sea winches.
Gr2 Commercially Pure Titanium Hex Bolts provide an impervious spontaneous titanium dioxide (TiO2) passive boundary layer. Unlike 304 or 316 stainless steels, which suffer pitting and stress corrosion cracking in high-salinity seawater, titanium exhibits virtually 0.000 mm/year penetration rates in maritime spray.
3. Offshore Wind Turbines & Clean Energy Installations
Hokkaido is spearheading Japan's offshore wind expansion and green hydrogen generation initiatives, especially across Ishikari Bay. Offshore nacelle components, sensor cowlings, and cathodic protection arrays demand centuries-scale mechanical reliability.
Yevzo manufactures Class 8.8 Equivalent Ti-6Al-4V Hex Flange and Structural Bolts with yield strengths surpassing 828 MPa. These fasteners maintain clamping force under severe rotational vibration, non-magnetic criteria for electronics, and resistance to coastal bio-fouling.
Engineering Comparison: Titanium Fasteners vs. Conventional Marine Steel
Selecting fasteners for industrial installations throughout Sapporo requires calculating both lifecycle longevity and structural weight trade-offs. The table below illustrates core mechanical metrics according to ASTM B348 and ISO standards:
| Mechanical / Chemical Property | Grade 2 (CP Titanium) | Grade 5 (Ti-6Al-4V) | SUS316 Marine Stainless | High-Tensile Steel 8.8 |
|---|---|---|---|---|
| Tensile Strength (MPa) | ≥ 345 MPa | ≥ 895–950 MPa | ≥ 580 MPa | ≥ 800 MPa |
| Yield Strength 0.2% (MPa) | ≥ 275 MPa | ≥ 828 MPa | ≥ 220 MPa | ≥ 640 MPa |
| Specific Gravity / Density | 4.51 g/cm³ | 4.43 g/cm³ (−44%) | 7.98 g/cm³ | 7.85 g/cm³ |
| Resistance to CaCl₂ Deicer Salts | Complete Immunity | Complete Immunity | Moderate (Susceptible to Crevice) | High Corrosion Risk |
| Cryogenic Impact Toughness | Superior | High (No DBTT to −50°C) | Good | Subject to Embrittlement |
Regional Market Trends
Emerging Procurement Trends Shaping Sapporo's Titanium Demand
Hokkaido's 2030 regional modernization plan, paired with Japan's national semiconductor re-shoring and hydrogen economy benchmarks, is directly driving long-term shifts in fastener sourcing.
Rapid Semiconductor Fab Growth in Chitose / Sapporo
The construction of state-of-the-art semiconductor fabrication facilities south of Sapporo has spurred demand for ultra-clean, chemical-resistant hardware. Titanium hex bolts and nuts are non-outgassing, resist harsh etch acids, and provide non-magnetic reliability in cleanroom robotics and chemical delivery pipe racks.
Total Cost of Ownership (TCO) Asset Management
Japanese facility operators have historically factored in routine replacement cycles for galvanised hardware. Driven by labor shortages across Hokkaido's engineering sectors, procurement teams are transitioning to "fit-and-forget" titanium fasteners, cutting routine maintenance and unplanned shutdowns caused by corroded, sheared bolts.
Precision Lightweighting in Winter E-Mobility
Cold-weather battery drain is a prominent hurdle for electric vehicles (EVs) and hybrid delivery vehicles across northern Japan. Shaving unsprung mass from wheel hubs, brake caliper mounts, and structural chassis cradles with Ti-6Al-4V bolts directly mitigates kinetic loss without sacrificing structural safety margins.
Procurement Knowledge Base
Frequently Asked Questions by Sapporo Hardware Buyers
Practical engineering, assembly, customs clearance, and logistics answers compiled by our international trade and manufacturing engineering departments.
How do titanium hex bolts withstand Sapporo's winter road-salt and calcium chloride deicers?
Unlike carbon steels which oxidize into porous rust, titanium instantly forms a chemically inert, tenacious, self-repairing titanium dioxide (TiO2) film upon contact with oxygen or moisture. Even when exposed to saturated solutions of calcium chloride (CaCl2), sodium chloride (NaCl), and sub-zero slush, titanium is entirely immune to pitting, crevice corrosion, and stress corrosion cracking at ambient and sub-zero temperatures.
What torque values should be used when replacing JIS Class 8.8 or 10.9 steel bolts with Gr5 titanium?
Grade 5 (Ti-6Al-4V) bolts exhibit a minimum tensile strength of 895–950 MPa, surpassing standard ISO/JIS Class 8.8 steel and closely tracking Class 10.9 performance. However, because titanium's modulus of elasticity is approximately half that of steel (approx. 114 GPa vs. 205 GPa), fasteners exhibit higher elongation per unit of preload. We advise tightening to roughly 70–80% of equivalent steel torque while always using a high-quality anti-seize lubricant to ensure accurate clamp-load conversion.
How can engineers prevent galling (thread cold-welding) when tightening titanium nuts on titanium bolts?
Thread galling is caused by microscopic friction welding when mating bare titanium surfaces under high rotational pressure. To prevent this, apply a titanium-compatible molybdenum disulfide (MoS2), nickel-based, or copper-based anti-seize paste prior to assembly. Alternatively, specify our anodized or micro-arc oxidized fastener finishes, which establish an insulating ceramic oxide boundary layer that mitigates surface-to-surface micro-friction.
How are orders packaged and shipped to Sapporo, Otaru, or Chitose?
Every fastener order is individually counted, bagged, and labeled with material heat numbers and sizing. Threads are protected using individual netting or cellular trays to eliminate transport bruising. We supply air courier direct to New Chitose Airport (CTS) within 3–5 business days, as well as consolidation ocean freight directly to Ishikari-Wan-Shinko and the Port of Otaru under standard DDP, CIF, or FOB Incoterms. All customs documentation and Mill Test Certificates (MTC) according to EN 10204 3.1 are provided.
Can Yevzo manufacture custom hex head profiles according to Japanese Industrial Standards (JIS B 1180)?
Yes. While standard European (DIN) and International (ISO) standards specify specific hex head widths across flats (e.g., M10 with 16mm or 17mm AF), JIS B 1180 often designates a 14mm AF. Our 100+ CNC machines can precision-turn hex profiles to match exact JIS small-head dimensions, fine metric thread pitches (such as M10x1.25 or M12x1.25), and OEM customer blueprints with zero tooling surcharge.