M8x25 TX40 Screws – xSurf

Dial in a solid mount every time. Our M8x25 TX40 screws give clean torque, smooth threads, and long life in salt water.
As a result, your mast plate clamps fast and stays put.

Why These Screws

• TX40 Torx drive: High torque with less cam-out and fewer stripped heads.
• Stainless steel: Corrosion resistant for daily salt and sand use.
• Clean threads: Precise machining for smooth starts and even clamping.
• Correct length: 25 mm suits most foil plates and pad thicknesses.

Specs

• Thread: M8 × 1.25 (ISO metric).
• Length: 25 mm (under head to tip).
• Head: TX40 Torx.
• Material: Stainless steel.
• Use cases: Wing/kite/surf foil mast plates, track mounts, hardware refresh.

Compatibility

These M8x25 TX40 screws fit most foils that use M8 bolts and US box tracks.
They pair perfectly with our M8 Paired Track Nuts and all
boards in the xSurf range.

How to Use

1. Seat the mast plate over the track slots.
2. Thread the screws by hand to avoid cross-threading.
3. Tighten evenly until snug. Then recheck after your first run.

Pro Tips

• Add stainless washers under the heads for smoother tightening and load spread.
• Mark your favorite mast positions on the pad for repeatable setups.
• For earlier lift, slide the plate slightly forward; for more top-end, move it back.

Care

Rinse with fresh water after each session. Next, dry fully.
Finally, apply a tiny drop of light oil to the threads if you ride daily.

FAQ

Will these work with my foil brand?

Yes, if your system uses M8 bolts and US box tracks. Most modern foils do.

Do I need threadlocker?

Usually no. Re-check tightness after the first session and after travel.
Use a light-strength threadlocker only if your brand recommends it.

What torque should I use?

Tighten firmly but do not over-torque. Check your foil manufacturer’s guidance.

Build your kit: see xSurf accessories or pair with
the M8 Paired Track Nuts for fast alignment.
For standards background, read about
ISO metric threads
and the Torx drive.

Ready to ride? Choose xSurf M8x25 TX40 screws for clean torque, secure clamping, and reliable sessions.