DEFLOW RANGE ALLEN SCREW LOG FIN | LONGBOARD FIN SCREW

The longboard fin Allen screw that doesn't fail when conditions get tough

There are accessories that go unnoticed until you need them. The fin screw is one of them. A poorly closed fin box, a fin that moves in the barrel, or a big wave session with an unsecured setup can ruin a perfect morning. The Deflow Range Allen Screw Log Fin exists to ensure that doesn't happen: solid, secure, and made of stainless steel to withstand whatever you throw at it, session after session.

WHY THIS SCREW MAKES THE DIFFERENCE

Not all fin screws are created equal. The difference between generic hardware and the Range lies in the materials, the precision of the fit, and the fact that it is specifically designed for longboard fins that need extra holding power. If you surf more powerful waves, practice noseriding with weight on the nose, or simply want your setup completely locked in, this is the screw you need.

• Stainless steel construction — Resistant to saltwater corrosion, sand, and continued use. A screw that doesn't rust, warp, or give you trouble when you need it most.
• Allen system (hex key) — The firmest fit available for longboard fin boxes. No slots that wear down or heads that get rounded off. Tighten it with the key and you're set.
• Designed for log fins — Specifically intended for securing single-fin longboards in larger waves, where fin movement is unacceptable.
• Compatible with most standard boxes — Works with the most common US Box fin boxes. Direct installation with no modifications required.
• Compact design — Easy to store in your board bag, car, or any session kit. It doesn't take up space, but it's there when you need it.

TECHNICAL FEATURES

• Material — Stainless steel
• Tightening system — Allen key (hex)
• Compatibility — Standard longboard fin boxes (US Box)
• Recommended use — Log / single fin fins in larger waves or when maximum hold is required
• Contents — Allen screw + mounting plate
• Line — Deflow Range Surf Essentials

EXPERT ADVICE

If you surf longboard and use heavy wood or glass fins on days with consistent waves, this screw is a small investment that can save your session. The Allen system offers more torque than Phillips head or hand-tightened screws—once locked, the fin doesn't move. Always keep a spare in your board bag along with the Allen key: it takes up the same space as a coin and eliminates one of the few things that can ruin a good day of surfing.
— Core Surfing Team

DEFLOW GUARANTEE — "OUR LOVE FOR THE SEA BROUGHT US HERE"

Deflow was born in Zarautz, in the heart of Basque surfing, founded by a group of surfers with a clear mission: to design and manufacture their own products using the best materials without compromising on quality. From the Basque Country, Deflow has built an international reputation for surfboard fins, grips, and accessories recognized for their balance of performance, durability, and design.

The Range line is Deflow's answer to a real need: everyday surf hardware designed for surfers who don't wait for perfect conditions. Range is manufactured with premium materials to withstand windy onshore mornings, winter swells, and quick lunch-break sessions. No frills, no filler. Everything you need, nothing you don't.

USAGE AND CARE

• Installation — Insert the plate into the US Box, slide the fin to the desired position, and insert the Allen screw. Tighten with the hex key until the fin is completely fixed. Do not overtighten to avoid damaging the box.
• Recommended tightening — Firm, but without forcing it. Stainless steel provides more than enough hold with moderate tightening. Always check the fit before entering the water.
• Maintenance — Rinse with fresh water after each session. Stainless steel resists salt, but a regular rinse extends the life of any metal part.
• Storage — Keep the Allen key next to the screw in an accessible place in your board bag. Having a spare on hand prevents problems before your session.
• Replacement — If you detect wear on the hex head or the threads, replace it. A damaged screw can ruin your board's fin box.

IS EVERYTHING READY BEFORE YOU HIT THE WATER?

The Deflow Range Allen Screw Log Fin is available at the Core Surfing Shop with free shipping on orders over €50 and delivery in 24-48 hours throughout mainland Spain. Official Deflow warranty included.