Photograph of the self tapping screws range. This page covers the M4 × 12 mm size, head 10 mm dia, 4 mm high.
Titanium Self Tapping Screws
Gr.5 Ti6Al4V Titanium Self Tapping Screw M4*12
A pan head with a wide integral bearing face in Ti-6Al-4V Grade 5 titanium, M4 thread, 12 mm long under the head, head 10 mm dia, 4 mm high and a T20 Torx recess.
Listed unit price. Email us with the quantity for a full quotation.
Specifications
Full Specification
| Product name | Gr.5 Ti6Al4V Titanium Self Tapping Screw M4*12 |
|---|---|
| SKU | TiSTS412 |
| Material | Ti-6Al-4V titanium, ASTM Grade 5 |
| UNS number | R56400 |
| Thread | M4 |
| Length under head | 12 mm |
| Head style | Pan head with a wide integral bearing face |
| Drive | Torx T20 |
| Head diameter | 10 mm |
| Head height | 4 mm |
| Torx size | T20 |
| Finish | Plain titanium, as machined |
| Magnetic response | Non magnetic |
| Availability | In stock |
| Price per piece | $0.90 |
Dimensions are the values listed for this size. Send a drawing if you need a dimension checked against a tolerance.
Overview
Where It Fits
These are Ti-6Al-4V self tapping screws with a thread form that cuts its own mating thread as it is driven. The head carries a broad flat bearing face, so clamp load is spread over a larger contact area than a plain pan head gives. All sizes in this range use an internal Torx drive.
Problems It Solves
- Fastening into a single component where there is no room or no budget for a tapped hole or an insert
- Assemblies where a steel screw would corrode at the joint and stain or seize the surrounding part
- Weight sensitive assemblies that still need a screw with a usable head bearing area
- Non magnetic assemblies where a stainless self tapping screw is not acceptable
Typical Application Areas
- Motorcycle and bicycle assemblies — brake calipers
- Motorsport and performance vehicles — suspension
- Marine and offshore fittings — deck fittings
- Chemical and process equipment — covers
- Electronics and instruments — housings and mountings near sensors and imaging equipment
Material
Ti-6Al-4V Grade 5 Reference Data
Published values for the alloy and for ASTM B348. They describe the material, not a batch certificate.
| Alloy designation | Ti-6Al-4V, ASTM Grade 5 |
|---|---|
| UNS number | R56400 |
| Nominal composition | 6 percent aluminium, 4 percent vanadium, balance titanium |
| Alloy class | Alpha beta alloy |
| Density | 4.43 g/cm³ |
| Minimum tensile strength | 895 MPa / 130 ksi |
| Minimum yield strength | 828 MPa / 120 ksi |
| Minimum elongation | 10 percent |
| Modulus of elasticity | About 114 GPa |
| Magnetic response | Non magnetic |
| Melting range | About 1604 to 1660 °C |
Why Titanium For This Joint
Weight
Titanium has a density of about 4.43 g/cm³ against about 7.85 g/cm³ for steel. Swapping a steel fastener for the same size in Ti-6Al-4V removes roughly 44 percent of the mass of that fastener.
Strength
ASTM Grade 5 is specified with a minimum tensile strength of 895 MPa and a minimum yield strength of 828 MPa, so the strength is in the range of a medium strength alloy steel rather than of aluminium.
Corrosion
Titanium carries a stable oxide film that re-forms as soon as it is damaged in air or water. It resists seawater and chloride environments that pit and crevice corrode common stainless grades.
Non magnetic
Titanium and its alloys are non magnetic, which matters around sensors, imaging equipment and magnetically sensitive instruments.
Size Ladder
Other Lengths In M4
Same head geometry and the same drive, in every length we hold for this thread size.
| Product | SKU | Length | Price / pc |
|---|---|---|---|
| Gr.5 Ti6Al4V Titanium Self Tapping Screw M4*12 | TiSTS412 | 12 mm | $0.90 |
| Gr.5 Ti6Al4V Titanium Self Tapping Screw M4*15 | TiSTS415 | 15 mm | $0.90 |
| Gr.5 Ti6Al4V Titanium Self Tapping Screw M4*17 | TiSTS417 | 17 mm | $0.90 |
Comparison
Other Head Styles In M4
The same thread size in the other ranges we stock, so the head profile and the drive can be chosen for the joint.
| Range | Head | Drive | Head size | Lengths |
|---|---|---|---|---|
| Self Tapping Screws | Pan head with a wide integral bearing face | Torx T20 | Head 10 mm dia, 4 mm high | 12–17 mm |
Use Guide
Fitting This Fastener
Use anti seize on the threads
Titanium galls readily against titanium and against stainless. A dry film or copper free anti seize on the thread and under the head keeps the torque to tension relationship predictable and lets the joint be broken later.
Torque to a titanium figure not a steel figure
Do not carry over a torque value from a steel or stainless fastener of the same size. The friction behaviour is different and the safe clamp load has to be set for the alloy and for the lubricant actually used.
Seat the drive fully before applying load
Push the Torx key or the socket right to the bottom of the recess before turning. A partly seated drive concentrates load on the top edge of the recess.
Watch galvanic pairings
Titanium is a noble metal. Where it is bolted directly to aluminium or magnesium in a wet environment, isolate the joint or accept that the lighter metal will carry the corrosion.
Keep the bearing face clean and flat
A wide flange or saucer face only works if it lands on a flat clean surface. Swarf or paint under the head shifts the clamp load off centre.
FAQ
Questions About This Size
What is the head size of the Gr.5 Ti6Al4V Titanium Self Tapping Screw M4*12
What titanium grade is it
What tool does it take
How much lighter is it than the same size in steel
Do I need anti seize
Is a different length available in this thread size
What does it cost
Quote This Size
Send the quantity and we will come back with a price and a lead time. Other lengths and head styles are on the same terms.
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