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Join usThis 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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