Corrosion-Resistant Titanium Flange Bolts

Titanium flange bolts deliver outstanding strength-to-weight performance, evenly distribute clamping force, and prevent loosening. They withstand vibration, corrosion, and high temperatures, making them ideal for aerospace, motorsport, and marine applications.

Titanium Flange Bolts Specifications

• ASTM B348 / B381 / B363
• DIN 931 / 933, ISO 4014 / 4017, ISO 7370, DIN 6921, IFI-115
• ASME B16.5

We can manufacture according to customer-specified ASTM, ASME, DIN, ISO, or MIL standards. EN 10204 3.1 / 3.2 material certificates and third-party inspection reports are available upon request.

Popular Titanium Flange Bolts

Our titanium flange bolts are made exclusively from premium aerospace-grade titanium alloy. Each bolt is fully forged, with threads formed through advanced rolling processes for superior fatigue resistance.

Popular stock sizes:

• Thread accuracy reaches 6g/6H.
• Flange faces can be machined with a smooth or serrated finish to increase friction.
• Tolerances are controlled to ISO 4759 Grade A/B standards.

Hex Flange Bolts

Hex flange bolts are the most common type, easily installed with a standard wrench or socket. They are suitable for most machinery and structural components.

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Hot-selling stock sizes for hex flange bolts:

M5 Flanged 6 Point Hex Titanium Bolt

M6 Flanged 6 Point Hex Titanium Bolt

M8 Flanged 6 Point Hex Titanium Bolt

M10 Flanged 6 Point Hex Titanium Bolt

M12 Flanged 6 Point Hex Titanium Bolt

Browse our full range of in-stock sizes

Drilled Wire-Lock Flange Bolts

Drilled wire-lock flange bolts have holes in the head for securing with safety wire, preventing loosening caused by vibration.

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They are commonly used in safety-critical applications such as racing and motorcycle braking systems.

Hot-selling stock sizes for drilled wire-lock flange bolts:

M5 Flanged 6 Point Drilled Hex Titanium Bolt

M6 Flanged 6 Point Drilled Hex Titanium Bolt

M8 Flanged 6 Point Drilled Hex Titanium Bolt

M10 Flanged 6 Point Drilled Hex Titanium Bolt

Browse our full range of in-stock sizes

12-Point Flange Bolts

12-point flange bolts have a dodecagon head for more contact and less rounding, enabling higher torque tightening with a torque wrench.

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They are widely used in aircraft engines, race car engines, and other applications requiring precise preload.

Socket Head Flange Bolts

Socket head flange bolts offer greater resistance to cam-out and are ideal for applications with limited space.

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If you require inch sizes or custom dimensions, send us your drawings for a quick evaluation and solution.

Surface Finishes and Color Options

To suit different working conditions and enhance appearance, we offer a variety of surface treatments:

Anodizing

An electrolytic process that forms a dense oxide layer on titanium, improving corrosion resistance and hardness. Available in blue, purple, gold, green, and more. Ideal for bicycle and motorcycle parts, medical devices, and decorative uses.

PVD Coating

In a vacuum, TiN, TiCN, or DLC films are deposited to significantly boost surface hardness and wear resistance. Some coatings feature ultra-low friction, reducing thread galling and installation torque. PVD offers a wide range of colors that resist fading, suitable for aerospace, motorsport, and cutting tool applications.

Polishing / Burnishing

Mirror or satin finishes reduce friction and make parts suitable for medical and food-grade applications.

Pickling & Passivation

Removes oxide scale after heat treatment or welding, forming a more stable protective layer—often used in chemical equipment.

Our finishing workshop can provide customized recommendations for your engineering and aesthetic requirements. For special colors like red titanium, we use a unique anodizing-PVD process to achieve a uniform, vibrant, wear-resistant, and fade-proof red finish.Quick Quote

General Torque Values

Apply anti-seize or copper-based paste to bolt threads to prevent galling.

Recommended torque values vary by bolt size, material, and application. For quick selection and safe installation, see our comprehensive Titanium Bolt Torque Chart & Usage Guide, covering metric and imperial sizes, titanium grades, and more.

Application Cases

Aerospace and Defense

Grade 5 titanium flange bolts are widely used in aircraft turbines, wing joints, satellite structures, and missile components. Their high strength-to-weight ratio and superior fatigue resistance perform exceptionally under extreme temperatures and vibration. Titanium’s non-magnetic and corrosion-resistant properties make it ideal for spacecraft instruments and housings. A 12-point head design ensures precise torque and simplifies maintenance.

Marine and Chemical

In offshore platforms, marine engineering, and shipbuilding, seawater and chloride corrosion are major challenges. Grade 5 and Grade 7 titanium bolts provide decades of service life through a self-healing oxide layer, resisting pitting and crevice corrosion in seawater up to 260 °C. Titanium also withstands chlorine, chlorides, and fluorocarbons in chemical equipment without degradation.

Automotive Racing and Motorcycles

Racing engineers use titanium flange bolts in engine covers, suspension systems, and chassis joints for weight reduction and high preload. The 12-point head design prevents loosening, while colorful PVD coatings enhance appearance and wear resistance—popular among motorcycle and performance car enthusiasts. Drilled wire-lock designs meet the strict anti-loosening requirements of motorsport.

Medical Devices

Medical implants and instruments demand materials that are non-toxic, non-magnetic, and MRI-compatible. Grade 23 (Ti-6Al-4V ELI) flange bolts, with low interstitial elements, offer excellent toughness for bone fixation plates, spinal screws, and surgical tools. Surfaces can be polished to a mirror finish or PVD-nitrided for increased hardness and wear resistance.

Bicycles and Sports Equipment

High-end mountain bikes, road bikes, and sporting gear use titanium flange bolts to secure handlebars, seat posts, brakes, and cranksets—reducing weight and preventing rust. Anodized color options meet personalized design needs, while titanium’s outstanding fatigue resistance suits equipment exposed to long-term vibration.

Why Choose Titanium Flange Bolts

High strength-to-weight ratio

Titanium alloy has a density of just 4.5 g/cm³—about 60% that of steel. Grade 5 titanium fasteners offer a tensile strength of 145 ksi and a yield strength of 138 ksi.

Corrosion resistance

Titanium naturally forms a TiO₂ film that gives Grade 5 fasteners exceptional resistance to seawater corrosion. They withstand tides, splashes, marine deposits, and high-velocity seawater up to 120 ft/s and 260 °C. Titanium also resists most hydrocarbons as well as chlorinated and fluorinated solvents, making it ideal for chemical processing equipment.

Fatigue performance

Titanium maintains high strength under cyclic loads. Its hexagonal close-packed crystal structure provides outstanding fatigue life.

Thermal stability

Grade 5 titanium retains mechanical properties at temperatures up to 350 °C (660 °F). It resists creep at 325 °C and has a melting point of 1674 °C, offering a wide safety margin.

Our Strengths and Services

Precision Manufacturing & Quality Control

Equipped with 5-axis CNC centers, cold/hot forging lines, and thread rolling machines, we produce titanium flange bolts in diameters M3–M30 and lengths 8–200 mm. Every batch undergoes dimensional inspection, hardness testing, thread gauge verification, and ultrasonic flaw detection to meet ASTM, ISO, and other international standards.

Material Assurance & Fast Stock Response

We stock Grade 2, 5, 7, 12, and 23 titanium from state-owned mills with stable quality and full traceability. Common sizes from M5–M20 are kept in ready stock for urgent deliveries.

Customization & Rapid Delivery

We can manufacture special sizes, head styles, and threads (metric/imperial) to your drawings, with anodizing, PVD coating, or combined finishes, plus custom colors and laser marking. Samples ship in 5–10 days; bulk orders in 2–4 weeks, with global air and sea freight options.

Trusted Worldwide & Certified Quality

Our titanium flange bolts have been exported to North America, Europe, Japan, Mexico, the Middle East, and many other regions. We are certified to ISO 9001, AS9100, and IATF 16949, and can provide EN 10204 3.1 material certificates and third-party inspection reports to help customers pass project audits and quality assessments.

One-stop supply of titanium bolts

Our titanium flange bolts are exported to North America, Europe, Japan, Mexico, the Middle East, and beyond.

We are certified to ISO 9001, AS9100, and IATF 16949, and provide EN 10204 3.1 material reports and third-party inspection documents to help customers pass project audits and quality assessments.

Titanium Hex Head Bolts

Titanium Socket Cap Bolts

Titanium Shoulder Bolts

Titanium 12 Point Bolts

Titanium U Bolt

Titanium Eye Bolt

Frequently Asked Questions (FAQ)

Are titanium flange bolts more expensive than steel bolts?

Yes, titanium costs more than carbon or stainless steel. However, its high strength, low weight, and maintenance-free performance can significantly reduce overall equipment weight and maintenance costs. For high-value applications like aerospace, racing, or marine engineering, the long service life and reliability offset the initial investment.

How can I prevent galling (cold welding) during installation?

Apply a dedicated anti-seize compound or use a low-friction PVD coating on the threads. Control tightening torque to avoid overloading, and use washers to isolate dissimilar metals when necessary to prevent galvanic corrosion.

What’s the difference between PVD coating and anodizing?

Anodizing thickens the natural oxide layer via electrolysis, mainly improving corrosion resistance and adding color, with limited hardness increase. PVD coating deposits ultra-hard films like TiN or DLC in a vacuum, significantly enhancing hardness and wear resistance.

Can you provide custom colors or laser marking?

Yes. We offer various anodized colors and PVD color coatings, plus laser engraving on the bolt head or flange surface for logos, size markings, or serial numbers.

Will shipping and packaging affect bolt quality?

All bolts are cleaned and corrosion-protected before shipping. Small batches are individually packed; larger quantities are sealed in moisture-proof bags and sturdy cartons or wooden crates. Packaging is labeled with size and heat number to ensure traceability. Vacuum packaging or desiccants are available on request.

Stock Sizes & Custom Service

We keep a wide range of popular titanium flange bolt sizes in stock.

Whether you need standard diameters or varied lengths, you can order directly for fast delivery. For inch sizes, special thread pitches, or longer/shorter dimensions, we can manufacture to your drawings.

Contact us anytime for in-stock quotes and professional solutions to make your project more efficient and reliable.Quick Quote