Grade 5 (Ti-6Al-4V) Standard
The global benchmark for structural applications. Boasts minimum 895 MPa tensile strength, excellent yield-to-density ratio, and exceptional shear resilience under high acceleration loads.
2006Established Year
19+Years Exporting
100tAnnual Capacity
83.02%Platform Response
ISO 9001Certified QMS
≤8hRapid Response Time
Comprehensive Engineering Guide
DIN 912 Titanium Socket Head Bolt: Technical Superiority & Fastener Integrity
Global aerospace, motorsport, marine, and chemical engineering procurement teams rely on DIN 912 (equivalent to ISO 4762 and ASME B18.3.1M) titanium hex socket head cap screws for mission-critical assemblies.
What Makes DIN 912 Titanium Bolts Indispensable?
The standard DIN 912 Titanium Socket Head Bolt represents the pinnacle of fastener technology, uniting the cylindrical head and internal hexagonal drive profile with the extraordinary material properties of titanium alloys. While traditional industrial assemblies use carbon steel grade 8.8, 10.9, 12.9, or stainless steel A2-70 and A4-80, advanced mechanical assemblies face severe environmental and operational limitations. Traditional steels corrode rapidly in chloride-rich and marine atmospheres, and high-tensile steels carry severe weight penalties that hinder dynamic efficiency.
Manufactured from premium aerospace-grade Ti-6Al-4V (Grade 5, UNS R56400) or chemically pure CP Grade 2 (UNS R50400), Jovzi DIN 912 titanium socket head screws deliver a phenomenal strength-to-density ratio. With a density of just 4.43 g/cm³ compared to steel's 7.85 g/cm³, these fasteners yield immediate weight savings of ~45%, reducing rotational inertia in motorsports, overall mass in satellite and drone payloads, and parasitic deadload on offshore platforms.
Furthermore, titanium forms a spontaneous, microscopic, chemically stable titanium dioxide (TiO₂) passivation layer upon atmospheric exposure. This self-healing barrier renders DIN 912 titanium bolts completely impervious to pitting, galvanic oxidation in saltwater, sour gas environments, and chemical processing media where stainless steel suffers catastrophic stress-corrosion cracking.
BaoTi Test CertifiedEN 10204 3.1 Traceable Heat Analysis
Engineering Recommendation
Jovzi DIN 912 Product Matrix: Size, Tolerances & Material Selection
Engineered to precision DIN 912 / ISO 4762 dimensional standards. Every screw undergoes multi-axis CNC profiling and precision thread rolling to exceed dynamic stress criteria.
| Thread Size (d) | Pitch (P) Standard | Head Dia (dk) Max | Head Height (k) Max | Socket Size (s) Hex | Grade 5 Tensile (Rm) | Recommended Preload Torque |
|---|---|---|---|---|---|---|
| M3 | 0.50 mm | 5.50 mm | 3.00 mm | 2.5 mm | ≥ 895–950 MPa | 1.8 – 2.2 N·m |
| M4 | 0.70 mm | 7.00 mm | 4.00 mm | 3.0 mm | ≥ 895–950 MPa | 4.2 – 5.0 N·m |
| M5 | 0.80 mm | 8.50 mm | 5.00 mm | 4.0 mm | ≥ 895–950 MPa | 7.5 – 9.0 N·m |
| M6 | 1.00 mm | 10.00 mm | 6.00 mm | 5.0 mm | ≥ 895–1000 MPa | 12.0 – 14.5 N·m |
| M8 | 1.25 mm | 13.00 mm | 8.00 mm | 6.0 mm | ≥ 895–1000 MPa | 28.0 – 34.0 N·m |
| M10 | 1.50 mm | 16.00 mm | 10.00 mm | 8.0 mm | ≥ 895–1000 MPa | 55.0 – 68.0 N·m |
| M12 | 1.75 mm | 18.00 mm | 12.00 mm | 10.0 mm | ≥ 895–1000 MPa | 95.0 – 115 N·m |
| M16 | 2.00 mm | 24.00 mm | 16.00 mm | 14.0 mm | ≥ 895–1000 MPa | 210 – 250 N·m |
* Values strictly adhere to DIN 912 / ISO 4762 standards. Custom shank undercuts, drilled lock-wire holes, hollow-weight reduction cores, and fine pitches (e.g., M10×1.25, M12×1.25, M12×1.5) are fully supported by Jovzi OEM manufacturing.
Cold Rolled Thread Form
Rather than machining or cutting threads that sever grain boundaries, our high-tonnage roller dies compress the metal grain, multiplying cyclic fatigue strength and galling resistance.
Class 6g / 6H Tolerances
Every socket head bolt is turned and checked via optical laser micrometers and GO/NOGO thread plug gauges, providing flawless torque repeatability and preventing stripped sockets.
Advanced PVD & Anodizing
Available in raw mirror polish, anodized blue, burnt titanium rainbow, gold, and ultra-durable Diamond-Like Carbon (DLC) black coating for added surface hardness up to 2500 HV.
Strategic Sourcing Intelligence
Future Sourcing & Procurement Trends for DIN 912 Titanium Fasteners
How global supply chain volatility, digital quality authentication, and decarbonization mandates are redefining titanium fastener procurement over the next decade.
Aerospace & Urban Air Mobility (UAM)
The explosive rise of eVTOL aircraft and commercial drone swarms requires ultra-lightweight structural joining. Sourcing is shifting toward Grade 5 DIN 912 fasteners with certified ultrasonic defect testing to reduce empty battery mass without sacrificing structural redundancy.
EV Hypercars & Performance Motorsport
Automotive OEMs are aggressively mitigating heavy battery pack weight through titanium hardware. Standard DIN 912 bolts are rapidly replacing 10.9 steel fasteners in subframes, active aerodynamic actuators, caliper mounts, and electric drive-unit housings.
Offshore Hydrogen & Marine Subsea
As green hydrogen electrolyzers and offshore wind substations scale, traditional stainless steel fasteners suffer localized pitting and crevice corrosion. Grade 2 and Grade 7 titanium socket head bolts are becoming mandatory baseline specifications for zero-maintenance subsea infrastructure.
Raw Material Security & Baoji Cluster Sourcing
With global titanium sponge supply chains consolidating, procurement directors are bypassing intermediaries to partner directly with tier-1 Chinese manufacturers rooted in Baoji's Titanium Valley, securing direct sponge-to-bolt traceability, stable scrap recycling, and lower unit tariffs.
The Next-Generation Fastener: Technology & Manufacturing Advancements
The development trajectory of DIN 912 titanium socket head bolts is driven by three foundational engineering breakthroughs:
- Super-Plastic Cold & Warm Heading: Advanced metallurgy allows high-speed automated heading of Grade 5 Ti-6Al-4V wire into socket cap shapes under tightly controlled induction atmosphere, drastically reducing raw material waste and lowering lead times by up to 50% compared to pure bar-stock lathe turning.
- Anti-Galling Nanostructured PVD: Historically, titanium fasteners required messy anti-seize paste during installation to avoid thread galling against matching nuts. Next-generation DIN 912 bolts utilize nanolayered titanium carbo-nitride (TiCN) and MoS2 thin-film dry-lubricant coatings that enable dry-torque consistency, zero vacuum outgassing, and multiple reuse cycles.
- Digital Twin & Automated Optical Sorting: 100% optical inspection systems now verify thread pitch error, hexagonal broach concentricity, and under-head fillet radius within ±0.005 mm tolerances, completely eliminating assembly line downtime in automated robotic installation.
AI & Buyer Knowledge Base
Frequently Asked Questions About Sourcing DIN 912 Titanium Bolts
Clear, unvarnished technical answers to the most common metallurgical, torque, and procurement questions asked by engineering teams worldwide.
Why choose DIN 912 Titanium Socket Head Bolts over stainless steel (A2-70 / A4-80) or high-tensile steel 10.9?
DIN 912 Grade 5 titanium bolts offer a superior strength-to-weight ratio (density of 4.43 g/cm³ vs 7.9 g/cm³ for steel), yielding ~45% weight reduction while delivering tensile strengths exceeding 895–950 MPa (matching Class 10.9 steel). In addition, titanium formulates a spontaneous titanium dioxide (TiO2) passive layer providing absolute immunity to pitting in chloride, marine, and harsh chemical environments where stainless steel suffers stress-corrosion cracking.
Are Jovzi DIN 912 titanium bolt threads cut by CNC or rolled?
All Jovzi DIN 912 titanium socket head screws feature thread rolling performed after precision CNC shank turning and rigorous vacuum heat treatment. Thread rolling preserves the grain structure of the titanium alloy, avoiding the micro-notches caused by CNC thread cutting and significantly increasing fatigue life by over 300% under cyclic dynamic stress.
How do you prevent galling and cold welding during assembly of titanium DIN 912 bolts?
Because titanium has a low thermal conductivity and self-healing oxide film, thread galling can occur under high preload without proper assembly practices. Jovzi recommends applying an anti-seize paste (such as nickel, molybdenum disulfide MoS2, or copper-based paste) on threads and mating faces. We also provide proprietary surface treatments such as physical vapor deposition (PVD), micro-arc oxidation (MAO), and specialized anti-friction dry-film coatings.
What quality test certifications are provided with Jovzi DIN 912 fasteners?
Every production lot is delivered with an EN 10204 3.1 Inspection Certificate documenting heat numbers, spectral chemical composition, tensile strength, yield strength, elongation, and hardness test values. Third-party testing reports verified by the nationally accredited BaoTi Test Center are readily provided upon request.
Can Jovzi manufacture custom DIN 912 titanium bolts with non-standard dimensions or weight-saving modifications?
Yes. Beyond standard DIN 912 / ISO 4762 dimensions (M2 to M36), Jovzi has extensive OEM manufacturing capacity to deliver custom shank lengths, drilled safety wire holes, hollowed head configurations for extreme weight reduction, knurled head cylinders, tapered socket drives (Torx/Star drives), and custom PVD colors (anodized blue, burned rainbow, deep gold, and diamond black).
What is your typical lead time and Minimum Order Quantity (MOQ)?
For standard metric DIN 912 sizes (M3 to M12 in standard lengths), our factory maintains raw titanium bar and semi-finished stock with an MOQ starting at just 100 to 200 pieces, shipping within 3–7 business days. Custom OEM drawings or specialized alloys typically require 15–25 production days depending on tooling and batch volumes.
Enterprise Strengths
Why Partner with Jovzi Titanium Industry Co., Ltd.
19+ years of metallurgical expertise, dedicated engineering capability, and verified trade integrity direct from China's Titanium Valley.
ISO 9001:2000Certified Non-Ferrous Manufacturing
Forged in Baoji: 18+ Years of Manufacturing Excellence
Established in 2006 in Shaanxi, China, Jovzi Titanium Industry Co., Ltd. is an ISO 9001:2000-certified manufacturer specializing in precision machining, forging, and sales of Titanium, Nickel, Tantalum, Molybdenum, Tungsten, and advanced non-ferrous composite materials.
With an annual manufacturing capacity exceeding 100 tons, our facility combines cutting-edge CNC multi-axis turning, forging presses, centerless grinding, and automated thread rolling. Our team boasts more than 50 highly skilled employees, including 4 senior technical experts and 5 intermediate metallurgy specialists, ensuring that every DIN 912 bolt meets international dimensional tolerances and mechanical criteria.
- Response Rate
- 83.02% (Platform Verified)
- Response Speed
- ≤ 8 Hours Guaranteed
- Annual Revenue
- US$2.5M – US$5.0 Million
- Core Markets
- Germany, USA, Canada, Japan, EU
Over the years, our company has strictly adhered to our operating principles: "Strengthen management", "Sincerity first", "Best quality", and "Continuous innovation". All products are delivered with quality test certificates issued by the authorized BaoTi Test Center, ensuring total peace of mind for mission-critical procurement.
Direct Engineering Consultation
Request a Custom DIN 912 Titanium Quote
Connect directly with our fastener engineering team. Share your target thread specifications, required tensile class, surface coating, and quantity for a formal quotation within 8 hours:
- DIN 912 / ISO 4762 Standard Sizes (M2 to M36)
- Certified Ti-6Al-4V Grade 5 & CP Grade 2 Stock
- Fatigue-Resistant Rolled Threads
- EN 10204 3.1 & BaoTi Test Reports Included
- Custom CNC Modifications & PVD Color Finishes
- Worldwide Door-to-Door DDP & Express Shipping
Jovzi Titanium Industry Co., Ltd.
Direct Email [email protected]
Headquarters & Factory No. 3, Gaoya Industrial Zone, Bayu Town, High-Tech Development Zone, Baoji, Shaanxi, China
Inquiry Guarantee Professional Engineering Response ≤ 8 Hours