Corrosion Resistant Lightweight Titanium Self Tapping Screws
Looking for screws that are corrosion resistant, lightweight, and stylish? Titanium self tapping screws are the answer.
They cut clean threads in aluminum, stainless steel, or plastic with ease. Resistant to seawater and salt spray, they never rust while staying light and incredibly strong.
Popular titanium self tapping screws
Cutting type titanium self tapping screws (for thin metal sheets)
Cutting type titanium self tapping screws are designed for thin metal sheets.
A slot or cutting edge at the tip allows them to cut threads quickly after pre-drilling, making them ideal for aluminum and stainless steel panels.
- ST3.9 / ST4.2 / ST4.8, length 12–25 mm
- Pozi or Torx drive for stable torque transfer without slipping
- Complete pilot hole size chart available (PDF download) to reduce assembly risks
Forming type titanium self tapping screws (for plastics and soft metals)
Forming type titanium self tapping screws are made for plastics and soft metals.
Their special thread profile forms threads directly by extrusion, producing no chips and avoiding debris risks.
They stay secure even in vibration environments, perfect for plastic parts and soft alloy joints.
- ST3.5 / ST4.2, length 10–20 mm
- Clean installation, strong threads, and long-term stability
Head & drive options
Head options
Pan head: A round and smooth design widely used for general assembly. Ideal for connecting titanium self tapping screws with both metal and plastic parts.
Countersunk head: Sits flush with the surface after tightening. Perfect for applications where appearance matters or protrusion must be avoided.
Oval / half countersunk head: Combines a flush fit with decorative appeal. Common in equipment housings and visible fixtures.
Flange pan head: Features a widened bearing surface to distribute stress. Excellent choice for thin sheets or areas requiring higher clamping force.
Drive options
Phillips drive: A traditional option with broad compatibility. Easy to use but may slip under high torque.
Pozidriv drive: Offers greater contact area than Phillips. Provides more stable torque transfer, popular in industrial assembly.
Torx drive: Delivers the best anti-slip performance. Handles higher torque, making it the preferred choice for precision or high-strength connections.
Hex socket drive: Works well in tight spaces or where strong fastening is required. Often used in machinery and medical device assembly.
Titanium self tapping screws sizes and standards
Diameter range (ST): 2.2 / 2.9 / 3.5 / 3.9 / 4.2 / 4.8 / 5.5 / 6.3
Regular lengths: 6–60 mm. Short sizes like 3–6 mm and 3.5–6 mm are always in stock, while extra-long screws can be customized.
Standards: ISO 7049; DIN 7981 (pan head) / 7982 (countersunk head) / 7983 (oval head).
| ST diameter | Common length (mm) | Typical application | Recommended head / drive |
|---|---|---|---|
| ST2.2 | 6–12 | Small electronics, thin covers | Pan head · Pozi / Torx |
| ST2.9 | 8–16 | Light covers, clip replacement | Pan / countersunk head · Pozi / Torx |
| ST3.5 | 10–20 | Cabinet doors, brackets | Pan / countersunk head · Pozi / Torx |
| ST3.9 | 12–22 | Marine fittings, housing joints | Pan / countersunk head · Pozi / Torx |
| ST4.2 | 12–25 | Offshore and outdoor main use | Pan / countersunk head · Pozi / Torx |
| ST4.8 | 16–25 | Automotive tuning (flange head) | Flange pan head / pan head · Torx / Pozi |
| ST5.5 | 20–30 | Thick sheet reinforcement, bracket fixing | Pan / flange pan head · Torx |
| ST6.3 | 20–40 | High clamping force areas | Flange pan head · Torx |
Titanium self tapping screws material comparison
| Material | Features | Advantages | Recommended applications |
|---|---|---|---|
| Grade 2 (CP Ti) | Commercially pure titanium with good ductility and strong corrosion resistance | Long service life, almost maintenance-free | Ships, docks, desalination plants, seaside electrical cabinets |
| Grade 5 (Ti-6Al-4V) | Titanium-aluminum-vanadium alloy with high strength, toughness, and galling resistance | High strength + anti-galling, handles higher torque | Automotive tuning parts, sports equipment, high-strength mechanical joints |
| Grade 23 (Ti-6Al-4V ELI) | Extra low interstitial version with better toughness and excellent biocompatibility | Implant-grade material, meets medical standards | Orthopedic and maxillofacial self tapping screws (strictly separated from industrial use) |
Titanium self tapping screws applications
Marine and outdoor
In ships, offshore engineering, wind power, and outdoor electrical equipment, screws are constantly exposed to seawater, salt spray, and humidity.
Steel screws rust quickly and require frequent replacement. Titanium self tapping screws offer natural corrosion resistance, lifetime durability, and the lowest overall cost of ownership.
Grade 2 options in ST4.2 / ST4.8, pan or countersunk head, with Pozi or Torx drive. Insulating washers are recommended.
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Automotive tuning
Car modification and motorsports demand lightweight, durable, and stylish fasteners. Traditional steel screws add weight and corrode easily.
Grade 5 titanium self tapping screws, ST4.2 / ST4.8 × 16–25 mm, flange pan or pan head, with Torx or Pozi drive, solve these issues. Optional anodized colors enhance the custom look.
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- 40% lighter than steel
- Rustproof and long-lasting
- Anodized finishes for style upgrades
- Available in complete sets for easy installation
Medical applications
Orthopedic and orthodontic fields require screws with strict biocompatibility and regulatory compliance.
Grade 23 titanium self tapping screws (ASTM F136) in Ø2.0 / 2.7 / 3.5 / 4.5 mm, with hex socket or Torx drive, are ideal for fracture fixation and orthodontic anchorage.
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- Meets international implant standards and MRI compatibility
- Supplied in double sterile packaging with UDI traceability
- Dedicated medical supply chain, strictly separated from industrial use
Installation & torque guide
When installing titanium self tapping screws, always pre-drill the correct pilot hole based on the size chart. Oversized holes may cause poor grip, while undersized holes may crack the base material.
Use Torx or Pozidriv drives whenever possible. They handle higher torque and prevent slipping.
Apply PTFE or MoS₂ dry film lubricant, or an anti-seize compound, on the threads before installation. Drive at low speed with steady pressure to avoid galling or seizing.
Follow the recommended torque ranges for each diameter and drive type. Never exceed the maximum torque to ensure secure fastening without damaging the substrate.
When fastening into aluminum or steel, always add insulating washers and seals. This prevents galvanic corrosion and extends overall service life.
Recommended torque for Grade 5 titanium screws (reference only)
| Bolt diameter | Recommended torque (Nm) |
|---|---|
| M3 | ≈ 1.7 Nm |
| M4 | ≈ 3.6 Nm |
| M5 | ≈ 6.9 Nm |
| M6 | ≈ 11.1 Nm |
Quality & certifications
Material traceability
All products are made from Grade 2, Grade 5, or Grade 23 titanium alloys. Each furnace batch is fully traceable, guaranteeing consistency and verifiability.
Reports & compliance
Every shipment includes an EN 10204 3.1 material certificate. RoHS and REACH compliance statements are available to meet international regulations.
System certifications
Our factory is certified to ISO 9001 quality management and AS9100 aerospace quality systems, ensuring strict standards for critical industries.
Professional packaging
Samples available in 5 / 10 / 25 pcs packs, and bulk packs of 100 / 1000 pcs.
All packaging includes anti-moisture and anti-rust protection, with labels for size and batch tracking.
Fast delivery
Standard sizes are in stock and ship within 24–72 hours.
Special lengths and surface treatments can be customized, with flexible lead times on request.
Related products of titanium self tapping screws
We don't just supply a single product — we deliver a complete one-stop titanium fastener solution.
Need a quick price check or trial fitting? Contact us for an instant quote or free samples.
Our engineering team provides selection advice, material certificates, and custom solutions tailored to your project, helping you move from validation to production in the shortest time.
Frequently asked questions
What are the disadvantages of titanium screws?
Titanium screws are more expensive, harder to machine, and may gall under load. However, their long service life and performance often justify the cost.
What are titanium screws used for?
They are widely used in marine equipment, automotive tuning, medical implants, aerospace, electronics, and optical instruments.
Are titanium screws better than steel screws?
Titanium screws are lighter, corrosion resistant, and rust free, with a superior strength-to-weight ratio. Steel screws are cheaper and suitable for general structures.
What are the disadvantages of self tapping screws?
They require a pre-drilled pilot hole, so installation is slower than self drilling screws. They also have limits when used on very hard materials.
Can titanium self tapping screws drill directly?
No, a pilot hole must be drilled first. The screw then cuts or forms the thread during installation.
What is the difference between self tapping and self drilling screws?
Self tapping screws cut or form threads in a pilot hole. Self drilling screws have a drill point that makes the hole and thread in one step.
Will titanium screws cause corrosion on aluminum parts?
Yes, titanium has a higher potential than aluminum, which may accelerate galvanic corrosion. Always use insulating washers or seals for protection.
