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Lifetime Warranty · 30-Day On-Water Trial
⭐ Rated 4.95 by 1,500+ Paddlers
Free Shipping on Orders $100+
Lifetime Warranty · 30-Day On-Water Trial
⭐ Rated 4.95 by 1,500+ Paddlers
Free Shipping on Orders $100+
Lifetime Warranty · 30-Day On-Water Trial
⭐ Rated 4.95 by 1,500+ Paddlers
US Box Fin Hardware Part Hydrus Board Tech

US Box Fin Hardware

The screw and baseplate that locks a fin into a US Standard fin box. If yours is lost, stripped, or missing, this is the part you need.

US Standard (US Box) fin boxes only. Not compatible with click-in fin systems or other box formats.

$ 3.25
In stock · ships within 24 hours
$ 3.25
Quick Facts

Why This One

  • Stainless steel screw and baseplate
  • Includes O-ring under the screw head
  • Fits US Standard (US Box) fin boxes
  • Sold as one set: screw, baseplate, and O-ring
Honest Fit

Perfect For (And Not For)

Great For
  • Replacing a lost, stripped, or missing fin screw and baseplate
  • Any fin that mounts in a US Standard (US Box) fin box
  • Keeping a spare set on hand for travel or repairs
Not Right For You If
  • Click-in fin systems (Hydrus side click-fin boxes)
  • Other fin box formats (non US Standard)

Verified Reviews

Still Have Questions?

We are real paddlers. Text or DM us before you buy. We'd rather you get the right gear than make a sale.

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Lifetime Warranty
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