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End of Year Sale 2025
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Screw with washers for windsurf fin JP-Australia (M6 PH3)
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Fin head Select Trim Box
5.49
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JP-Australia US-Box Fin Screw (M4 PH2) with Plate Nut is a complete mounting set for fins using the US-Box system. Includes a crosshead screw and sliding nut – essential for secure, adjustable installation of your SUP or windsurfing fin. Available in lengths 20 mm and 25 mm

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This set of screws and nuts from JP-Australia is a practical spare or replacement accessory for all boards equipped with the US-Box system. The M4 crosshead PH2 screw allows for quick assembly and disassembly of fins without the need for specialized tools – a standard cross screwdriver is all that's required.

The flat nut slides into the box’s guide, enabling easy adjustment and precise positioning of the fin – this allows you to tailor the board's handling characteristics to your own preferences. 

Available in two lengths:

20 mm – for thinner boxes or shorter slots

25 mm – for deeper boxes or thicker decks


Product highlights

Made of stainless steel and brass

Corrosion resistance


Compatible

Fits most US-Box boxes used in SUP boards, windsurfing boards, and wing foiling



Screw with a cross head

You can tighten it with a coin or a screwdriver



Features

  • Length of the screw - 20 mm or 25 mm
  • Diameter of the screw - 4 mm
  • Material of the screw - Stainless steel
  • Nut - Brass, suitable for US-Box
  • Set - 1x screw + 1x nut
  • Compatibility - US-Box (SUP, WS, Wing, Surf)


 

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