Engineered Titanium Components & Fasteners
Direct supply from Baoji Titanium Valley with certified mill test reports, ultra-clean surface passivation, and custom CNC threading to JIS, DIN, and ISO specifications.
Technical Specification Whitepaper: Titanium Set Screws for Daegu
Comprehensive procurement reference detailing metallurgy, machining tolerances, anti-galling surface treatments, and localized supply chain integration for industrial OEM manufacturers across the Daegu Metropolitan Region.
As the epicenter of South Korea's high-precision machinery, automotive powertrain engineering, and advanced medical device manufacturing, the Daegu Metropolitan Area (including the Seongseo Industrial Complex, Dalseong Industrial District, and Daegu Gyeongbuk Free Economic Zone) operates under exceptionally stringent engineering standards. The localized shift from conventional STS304 and alloy steel set screws (무두볼트 / 멈춤나사) to high-performance titanium fasteners is driven by severe rotational stress, corrosive operating environments, high magnetic susceptibility concerns, and demanding lightweighting mandates.
Jovzi Titanium Industry Co., Ltd. supplies high-precision CNC-machined and cold-formed titanium set screws (grub screws) engineered to international standards (ISO 4026 / DIN 913 Flat Point, ISO 4027 / DIN 914 Cone Point, ISO 4028 / DIN 915 Dog Point, and ISO 4029 / DIN 916 Cup Point). Sourced directly from our ISO 9001-certified manufacturing base in Baoji, China's "Titanium Valley," our fastener solutions address the exact metallurgical stability, vibration resistance, and dimensional repeatability required by South Korean precision manufacturing conglomerates and tier-1 subcontracting machine shops.
Metallurgical Characterization: Selecting the Right Titanium Grade
A primary cause of mechanical fastening failure in high-speed reciprocating systems is mismatched grade selection. We deliver set screws tailored to the operating conditions of precision Korean machinery:
| Titanium Grade | UNS / Standard | Yield Strength (0.2%) | Tensile Strength | Target Daegu Industry & Application |
|---|---|---|---|---|
| Gr2 (CP-3) | UNS R50400 / ASTM B348 | ≥ 275 MPa | ≥ 345 MPa | Electroplating jigs, chemical spray nozzles, non-magnetic optical equipment fixtures |
| Gr5 (Ti-6Al-4V) | UNS R56400 / ASTM B348 | ≥ 828 MPa | ≥ 895 MPa | Robotic articulated joints, high-speed spindle lock collars, racing drivetrains |
| Gr5 ELI (Gr23) | UNS R56401 / ASTM F136 | ≥ 795 MPa | ≥ 860 MPa | Dental implant surgical abutments, orthopedic fixation, endoscopic tooling |
| Gr7 (Ti-0.15Pd) | UNS R52400 / ASTM B348 | ≥ 275 MPa | ≥ 345 MPa | Semiconductor cleanroom chemical fluid line assemblies, acid etching bath tooling |
Localized Engineering Application Scenarios in Daegu
Robotics & Harmonic Drive Positioning
Daegu is rapidly establishing itself as South Korea's national robotics center. In harmonic drive gearboxes and multi-axis collaborative robotic arms, titanium Grade 5 DIN 916 cup-point set screws secure shaft pulleys and encoder rings without inducing magnetic distortion or rotational inertia lag.
Smart Mobility & EV Powertrain Tooling
Tier-1 automotive component producers located across Seongseo Industrial Complex utilize our titanium fasteners to secure balancing weights and drive-train positioning pins. Operating at nearly 56% the weight of steel, Gr5 set screws withstand rapid thermal cyclings without thermal fatigue creep.
Daegu Medical Device & Dental Cluster
Daegu's High-Tech Medical Complex hosts world-class dental implant manufacturers. We supply ultra-clean ASTM F136 Gr5 ELI headless set screws and micro-threaded locking studs (M1.2–M3.0) with validated biocompatibility, zero toxic elemental inclusions, and mirror-finished Class 6g threads.
Mitigating Thread Galling & High-Torque Stripping in Titanium Fasteners
A common technical hurdle faced by Korean assembly engineers when migrating to titanium set screws is galling (fretting corrosion) during rapid automated pneumatic tightening. Titanium forms a spontaneous, passivating titanium oxide (TiO2) film that, under localized frictional pressure without lubrication, can shear and micro-weld against mating internal threads.
Jovzi Titanium addresses this via two specialized surface treatment protocols available upon order: Micro-Arc Oxidation (MAO) / Hard Anodizing and Anti-Friction Dry-Film Lubricant (MoS2/PTFE) Impregnation. These processes increase surface hardness up to 800–1000 HV, drastically reduce the friction coefficient below 0.12, and eliminate localized seizing in blind tapped holes. Furthermore, our internal hex sockets (DIN 913–916) are precision broached or cold-forged with radius-reinforced corners to distribute radial bit torque and prevent stripping under high torsional pre-load.
Regional Industry Trends: Why Daegu Procures from Baoji, China
Over the past five years, cross-border procurement dynamics between South Korea and China have matured. Daegu-based manufacturing procurement managers increasingly bypass intermediary trading agents in Seoul or Busan to form direct factory partnerships with Tier-1 manufacturers located in Baoji, Shaanxi. Key market drivers include:
- Raw Material Cost Hedge: Baoji controls the primary sponge titanium melting capacity in China. Direct factory engagement insulates Daegu buyers from global commodity price spikes.
- Speed of Custom Prototyping: Dedicated CNC Swiss-lathe centers capable of turnaround on non-standard pitch, dog-point step downs, and custom lengths in 7 to 10 days.
- Rapid Maritime & Air Logistics: Consolidation via Qingdao or Tianjin sea ports reaches Busan Port or Daegu Air Cargo terminals within 3 to 5 business days, ensuring seamless Just-In-Time (JIT) production lines.
Why Daegu Procurement Teams Rely on Jovzi Titanium
Operating since 2006 in Baoji, China's Titanium Valley, we combine material metallurgy with ultra-precision CNC manufacturing for industrial exports.
ISO 9001 Certified Quality
Stringent Quality Management Systems from vacuum consumable electrode arc melting (VAR) to multi-stage optical dimension verification.
EN 10204 3.1 Traceability
Every batch shipped with detailed chemical composition and mechanical test certificates verified independently by the authorized BaoTi Test Center.
100t Annual Capacity
Over 1,000–3,000 m² factory space, high-precision Swiss-type turning centers, rolling threads, and an export ratio maintaining 81%–90% across international markets.
≤ 8h Engineering Quote
Direct communication with our 4 senior and 5 intermediate titanium engineers. Rapid DFM analysis on STEP/DWG drawings within 8 working hours.
Frequently Asked Questions by Daegu Procurement Specialists
Practical answers addressing logistics to South Korea, import documentation, testing standards, and order parameters.
What thread standards and tolerances do you provide for the South Korean market?
We manufacture titanium set screws strictly compliant with KS B 0205, JIS B 1177, ISO 4026–4029, and DIN 913–916. Thread tolerances are held to standard 6g / 6H precision, with high-precision aerospace/medical classes (4h6h) achieved using multi-axis CNC Swiss turning centers. Customized thread pitches, UNC/UNF threads, and anti-vibration micro-locking patches are readily supplied.
Can we receive EN 10204 3.1 Mill Test Certificates and RoHS/REACH compliance data?
Yes. Every shipment destined for South Korea is accompanied by a genuine EN 10204 3.1 Mill Test Certificate (MTC) detailing ingot heat number, exact chemical composition (C, Fe, N, O, H, Ti balance), tensile strength, and yield strength. Third-party testing reports issued by the BaoTi Test Center and full RoHS / REACH certification can be provided for incoming customs clearance and internal QA records.
What are your typical shipping lead times and DDP terms into Daegu?
For standard stock fasteners and sample orders, parts ship within 48 to 72 hours via DHL/FedEx/SF Express, arriving at Daegu facilities in 2 to 4 business days. For bulk commercial orders, maritime freight via Qingdao/Tianjin to Busan Port takes approximately 2 to 3 days transit time, followed by rapid customs clearance into Daegu. We support FOB, CIF, CFR, and full DDP (Delivered Duty Paid) terms handling customs, tariffs, and direct warehouse delivery.
What is your Minimum Order Quantity (MOQ) for custom-machined set screws?
For standard catalog fasteners (DIN 913, 914, 915, 916 in standard sizes M3 to M16), our MOQ starts at 100 to 200 pieces. For custom CNC-machined micro set screws (e.g., M1.2–M2.5 for medical/optical use) or customized dog-point geometries per drawing, initial pilot prototype runs start at 50 pieces to facilitate engineering verification before mass procurement.
How do you prevent thread galling in automated assembly lines?
We offer advanced secondary surface enhancements including micro-arc oxidation (anodizing in custom colors: blue, gold, purple, black), plasma electrolytic polishing, and molybdenum disulfide (MoS2) dry lubricating coatings. Our thread rolling process ensures continuous grain flow without cutting burrs, minimizing friction coefficients during automated high-speed torque driving.
Ready to Source High-Precision Titanium Fasteners for Daegu?
Submit your 2D/3D drawings, DIN/ISO standards, material grades, or target quantities to our engineering team. Receive technical feasibility reviews and competitive factory-direct pricing within 8 hours.