Unifit is a reputed Titanium Fasteners Manufacturer in India, specializing in marine titanium fasteners, chemical processing, and aerospace applications. Our fasteners are strong, with a high strength to weight ratio, and have a strong performance in terms of durability, corrosion resistance, and lightweight, suited to offshore platforms, desalination plants and marine structures. Aerospace and medical assemblies are also made using biocompatible Grade 23 (ELI) fasteners, which provide a long service life.
We have Grade 2, Grade 5 ( Ti-6Al-4V fasteners India ) fasteners, Grade 7 fasteners supplier, Grade 12, and Grade 23 (ELI). We produce high quality 2nd grade Titanium nuts, Titanium stud bolts, Titanium socket head cap screws, and Titanium threaded rods, which are used by marine, chemical, aerospace, and EPC professionals.
Unifit usually provides a solution of titanium fasteners for seawater applications, Grade 2 vs Grade 5 titanium fasteners, and titanium fasteners for chemical processing plants. Get to know more and get to know what we have to offer on our hub, Fasteners Manufacturer in India.
Request QuoteTitanium fasteners come in different sizes and forms that include bolts, nuts, studs, screws, washers, and threaded rods of commercially pure titanium or high-strength titanium alloys, like Ti-6Al-4V. Primarily in India, they are highly favored as lightweight fasteners because they have a great strength to weight ratio. Titanium is also naturally coated with an oxide layer (passive layer), which prevents corrosion even in seawater and other chemical conditions.
Titanium fasteners are ideal for use in marine and offshore environments as they are preferred over stainless steel when it is needed to reduce weight and experience seawater performance as well as long-term corrosion reliability. But, titanium is galvanic when it is installed with wrong lubrication and torque procedures, so the right practices of lubrication and torque are needed.
| Grade | Type | Key Benefits | Relative Strength | Corrosion Resistance | Typical Applications |
|---|---|---|---|---|---|
| Titanium Grade 2 | Commercially Pure (CP) | excellent balance of ductility and weldability. | Moderate | Excellent (Best for general marine use) | Seawater systems, heat exchangers, piping supports, offshore hardware. |
| Titanium Grade 5 | Ti-6Al-4V (Alpha-Beta Alloy) | Exceptional strength-to-weight ratio; high fatigue resistance. | Very High | High | Aerospace structures, performance racing, high-strength bolted joints. |
| Titanium Grade 7 | CP + Palladium (0.12-0.25% Pd) | Enhanced resistance to crevice corrosion in reducing acids. | Moderate | Superior (Best for aggressive chemicals) | Chemical plants, reactors, aggressive process lines, brine handling. |
| Titanium Grade 12 | Ti-Ni-Mo Alloy | Better high-temp corrosion/crevice resistance than CP grades. | Moderate to High | Excellent (At high temperatures) | Industrial equipment, heat exchangers, chemical processing. |
| Titanium Grade 23 | Ti-6Al-4V ELI (Extra Low Interstitial) | Higher purity version of Grade 5; improved toughness and ductility. | Very High | High | Aerospace critical parts, medical devices, cryogenic applications. |

















| Product Type | Common Configurations | Size Range (Typical) | Standards & References | Key Applications |
|---|---|---|---|---|
| Titanium Bolts | Hex, Heavy Hex, Flange, Socket Head (SHCS) | M3 – M100 | DIN 931/933, ISO 4014/4017, DIN 912, ASME B18.2.1 | Aerospace frames, high-performance racing, engine assemblies. |
| Titanium Nuts | Hex, Heavy Hex, Lock Nuts (Nylon/Metal), Coupling | M3 – M100 | ASTM A194, DIN 934, DIN 985 | Fastening in corrosive environments, aerospace structural joints. |
| Titanium Studs | Full Thread, Double-End (Flange), Tap-End | M6 – M76 | ASME B16.5, DIN 976 | Marine & Chemical: High-reliability piping and flange connections. |
| Titanium Washers | Flat, Spring (Split), Custom Profiles | M2 – M100 | DIN 125, DIN 127, ASME B18.22.1 | Load distribution, preventing surface damage on mating parts. |
| Titanium Screws | Machine Screws, Set/Grub Screws, Custom Drives | M1.6 – M12 | DIN 7985, ISO 7380, ASME B18.6.3 | Electronic housings, medical instruments, precision equipment. |
| Threaded Rods | Metric (Coarse/Fine), Inch (UNC/UNF) | 1m – 3m Lengths | DIN 975, ASME B18.31.2 | Double-nutted anchoring, chemical tank supports, custom suspensions. |
| Standard | Covers | Typical Products | Notes |
|---|---|---|---|
| ASTM B348 | Titanium Bar, Rod, and Fastener Stock | All machined fasteners (Bolts, Studs) | The primary spec for raw material chemistry and properties. |
| ASTM F468 | Non Ferrous Bolts, Hex Cap Screws, and Studs | External threaded fasteners | Industry Standard for the procurement of finished titanium bolts. |
| ASTM F467 | Nonferrous Nuts for General Use | Hex Nuts, Heavy Hex Nuts, Jam Nuts | Specific to the manufacturing and testing of titanium nuts. |
| ASTM F136 | Ti-6Al-4V ELI (Grade 23) | Medical & Aerospace fasteners | Specified for high-toughness or "Extra Low Interstitial" parts. |
| DIN / ISO | Metric Dimensions & Threading | DIN 931/933, DIN 912, ISO 4014 | Global standard for metric sizing (M3 to M100). |
| ASME B18.2.1 / .2 | Inch Series Dimensions | Hex Bolts (B18.2.1) & Nuts (B18.2.2) | Standard for North American industrial applications. |
| EN 10204 3.1 | Certification & Traceability | Inspection Certificates (MTC) | Validates that the fastener meets the actual order requirements. |
We supply high-performance acid-resistant fasteners with PMI testing and full EN 10204 3.1 / 3.2 Mill Test Certificates, ensuring complete traceability and compliance for critical applications.
Get Quick Quote| Grade | Main Alloying Elements (Nominal %) | Material Note |
|---|---|---|
| Gr 2 | CP Titanium (99.2% Ti) | Commercially Pure: Moderate strength with the best general corrosion resistance for marine use. |
| Gr 5 | Ti-6Al-4V (6% Al, 4% V) | Alpha-Beta Alloy: The "workhorse" grade; provides the highest strength-to-weight ratio. |
| Gr 7 | Ti + Pd (0.12–0.25% Palladium) | Pd-Bearing CP: Chemically identical to Gr 2 but with Palladium added for superior resistance to reducing acids. |
| Gr 12 | Ti-Ni-Mo (0.8% Ni, 0.3% Mo) | Corrosion Alloy: Specifically designed for improved crevice corrosion resistance at high temperatures. |
| Gr 23 | Ti-6Al-4V ELI (Low Interstitials) | ELI Grade: A higher-purity version of Grade 5 with lower oxygen and iron for improved toughness and ductility. |
| Grade | Tensile Strength (MPa) | Yield Strength (0.2% Offset) (MPa) | Elongation (%) | Material Performance Notes |
|---|---|---|---|---|
| Grade 2 | 345 min | 275 – 450 | 20% | Moderate strength; excellent ductility for bending/forming. |
| Grade 5 | 895 min | 825 min | 10% | Highest Strength: Comparable to high-tensile steel bolts. |
| Grade 7 | 345 min | 275 min | 20% | Same mechanical profile as Gr 2, but with Pd for corrosion. |
| Grade 12 | 480 min | 345 min | 18% | Higher strength than CP grades with good heat resistance. |
| Grade 23 | 860 min | 795 min | 10% | ELI Grade: Better toughness and fatigue life than Gr 5. |
| Industry | Recommended Grades | Why | Alternative Materials | Typical Products |
|---|---|---|---|---|
| Aerospace & Defense | Grade 5, Grade 23 | Extreme strength-to-weight ratio and fatigue resistance. | Inconel 718, 17-4 PH Steel | Engine bolts, airframe fasteners, landing gear studs. |
| Marine & Subsea | Grade 2 | Immune to saltwater corrosion and pitting; cost-effective. | Super Duplex, Monel K500 | Hull fasteners, offshore sensors, desalination piping. |
| Chemical Processing | Grade 7, Grade 12 | Superior resistance to reducing acids and high-temp crevice corrosion. | Hastelloy C276, Tantalum | Reactor vessel bolts, heat exchanger studs, pump hardware. |
| Oil & Gas | Grade 5, Grade 2 | Resistance to sour gas ($H_2S$) and chloride stress corrosion. | Inconel 625, MP35N | Downhole tools, wellhead fasteners, subsea valves. |
| Medical & Biotech | Grade 23 (ELI) | Biocompatible, non-magnetic, and high fracture toughness. | 316LVM Stainless, PEEK | Bone screws, surgical instrument fasteners, MRI components. |
| Automotive / Racing | Grade 5 | Reduces unsprung weight; high strength for engine/suspension. | Chrome-moly steel | Wheel studs, connecting rod bolts, exhaust manifold fasteners. |
Keep this section short and actionable (avoid fluff).
Where performance at sea and weight minimization are important, titanium fasteners are the first choice with a great performance of corrosion resistance and long life. Stainless steel fasteners are cheaper and more easily available, hence they can be used for general purposes. In the case of normal industrial applications.
Monel fasteners are an established marine alloy that works effectively in marine seawater. Nevertheless, depending on use and exposures, titanium may be superior to Monel in the reliability of long-term seawater corrosion.
Inconel fasteners are to be used with high temperature resistance and oxidation. Instead, titanium fasteners are lightweight, with strength and resistance to corrosion, although they cannot withstand very high-temperature oxidation service.
Some of the most common challenges that people face while installing the Titanium Fasteners in any structure are given below.
One of the most widespread problems of titanium fasteners is falling because of the friction between the metals during the process of installation. In order to avoid seizing, apply a suitable anti-seize compound to the service temperature and media. Always use a controlled torque, install fasteners gradually, and use impact tools. Friction can also be minimized with PTFE or other such coatings where necessary. In certain designs, dissimilar mating materials (e.g. titanium bolt with a compatible nut material) are also used to reduce galling.
Lubrication has a strong influence on the correlation between applied torque and the real load on the clamp. Even minor alterations may cause over- or under-tightening. Project-specific torque rules are suggested to meet the critical joints, and this offers a good performance that is reliable and repeatable.
Titanium is not very hard and may have a tendency to be damaged on the surface. Embedding and surface wear can be prevented by using appropriate washers, smooth bearing surfaces, and by not including burrs or sharp edges when assembling.
The step-by-step process of how these high-quality Titanium Fasteners are manufactured is given below.
Below are our quality assurance and testing procedures that we strictly follow to assure the reliability and performance of our titanium fasteners.
Include:
| Size (Diameter) | Length Range | Typical Grades | Thread Type | Availability | Notes |
|---|---|---|---|---|---|
| M3 – M10 | 10mm – 100mm | Gr 2, Gr 5 | Metric Coarse/Fine | Ex-Stock | Common for electronics & medical devices. |
| M12 – M24 | 25mm – 250mm | Gr 2, Gr 5, Gr 7 | Metric Coarse | Ex-Stock | Standard for marine piping & automotive. |
| M27 – M64 | Up to 600mm | Gr 2, Gr 5, Gr 12 | Metric Coarse | Made to Order | Heavy industrial and chemical reactors. |
| 1/4 – 1 | 1 – 12 | Gr 2, Gr 5, Gr 23 | UNC / UNF | Stock / MTO | Aerospace and US-standard machinery. |
| 1-1/8 – 2 | Up to 24 | Gr 5, Gr 7 | UNC / 8UN | Made to Order | Large flange studs and subsea hardware. |
Unifit Fasteners is a reputable company that manufactures titanium fasteners, where people can find the best solutions to their problematic industrial fittings. Our grade of titanium goes across a variety of Grade 2, Grade 5, Grade 7, Grade 12, as well as Grade 23, with the support of in-house manufacturing capabilities. We are a team that specializes in custom manufacturing as per the drawings or specification sheets, making sure that there are no misfits or performance issues. All products are subject to stringent quality checks and inspection, and MTC 3.1 documentation and complete traceability are provided where necessary. Unifit can be a reliable supplier of titanium fastener needs due to our engineering assistance in grade choice, high-speed delivery, and packaging with international shipping.
Ready to Order Titanium Fasteners?Choose Grade 2 to extreme corrosion protection (seawater, chemicals) at relatively low cost with good formability, which is suitable to marine/chemical processing requirements and select Grade 5 (Ti 6Al-4V) to utilize high strength, high-performance, load-bearing for aerospace applications, where strength is the primary consideration and cost is secondary, since it is twice as strong but more expensive.
Yes, titanium fasteners are highly corrosion-resistant in seawater due to their natural oxide passive layer. They are ideal for marine hardware, offshore platforms, desalination plants, and coastal installations, providing long-term reliability with minimal maintenance.
Grade 7 titanium fasteners are alloyed with palladium, making them extremely resistant to reducing acids like hydrochloric acid. They are commonly used in chemical processing plants, acid handling equipment, and aggressive industrial environments.
Grade 23 (ELI – Extra Low Interstitials) offers similar strength to Grade 5 but has higher fracture toughness and better ductility, making it suitable for aerospace and medical applications.
No, titanium fasteners are non-magnetic and suitable for electronic assemblies, medical devices, and environments sensitive to magnetic interference.
To prevent galling in titanium bolts and nuts can be easily done by using anti-seize lubricants compatible with the operating environment, controlled torque installation, slow tightening, and avoiding impact tools. PTFE coatings or dissimilar mating materials can also reduce the risk.
Titanium fasteners are suitable for moderate to high-temperature applications, but they are not ideal for very high-temperature oxidation services like Inconel. Always check the operating temperature against the fastener grade.
Yes, all titanium fasteners can be supplied with Mill Test Certificates (EN 10204 3.1) and full traceability to heat and lot numbers, ensuring quality and accountability.
Custom titanium fasteners, including studs, typically have a lead time of 2–8 weeks, depending on size, grade, and order quantity.
Yes, third-party inspection can be arranged upon request, providing an additional layer of quality assurance and compliance with project or client specifications.