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Hexlox Hexnut 3/8" (Alfine/Nexus) – Black

16.93 EUR
Theft-proof axle nut for Shimano Alfine and Nexus hub-gear wheels (3/8", 9.5 mm axle): the outer ring spins freely, and a 6 mm Hexlox insert means only your coded key opens it. Sold singly – a wheel needs two nuts, two 6 mm inserts and a Hexlox Key.
SKU: Hexnut_3/8Black
In stock
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Three years warranty

The Hexlox Hexnut 3/8" – Black is a theft-proof axle nut for Shimano Alfine and Nexus hub-gear wheels (3/8", 9.5 mm axle): its outer ring spins freely so pliers and spanners find no grip, and a 6 mm Hexlox insert in the centre means only your coded key opens it.

Hexlox Hexnut 3/8 inch axle nut in black with Hexlox logo
Hexlox Hexnut 3/8" – for Shimano Alfine and Nexus.

Why the Hexnut?

  • Made for hub gears. Replaces the standard 3/8" axle nut on Shimano Alfine and Nexus hubs.
  • Free-spinning security ring. The outer ring turns on its own, so pliers and spanners just spin it.
  • Locked by a 6 mm insert. Only the Hexlox Key with your code removes the insert.
  • No spanner to carry. With the insert out, the Hexnut loosens with a 6 mm Allen key.
  • Weatherproof. Stainless steel for riding all year.
Black Hexlox 6 mm insert that locks the Hexnut

Why protect a hub-gear wheel

A hub-gear rear wheel – with the hub, sprocket and shifting – is one of the most expensive parts of a city or touring bike, and it is held on by two ordinary nuts. A thief with a 15 mm spanner can take it in under a minute. The Hexnut stops exactly that.

What you need for one wheel: 2 Hexnuts, 2 Hexlox 6 mm inserts and 1 Hexlox Key.

Who is it for?

  • Alfine and Nexus riders. Who park their bike in the city every day.
  • Belt-drive commuters. Whose rear wheel, hub and sprocket are worth far more than a lock.
  • Touring riders. Who leave a loaded bike outside shops and cafés.

Compatibility

HubsShimano Alfine and Nexus
Axle3/8" (9.5 mm)
InsertHexlox 6 mm (sold separately)
TighteningStay within the hub maker's maximum torque – Hexlox notes that 30 Nm is sufficient
MaterialStainless steel
ColourBlack
In the box1 × Hexnut (single nut)

Frequently asked questions

Does the Hexlox Hexnut fit my Rohloff hub?

This Hexnut is specified for Shimano Alfine and Nexus (3/8" axle). Rohloff is not listed by Hexlox – ask us before ordering.

Is a single nut enough?

No – a wheel has two axle nuts. Protect both sides, otherwise the wheel can still be removed.

How do I fix a flat on the road?

Carry your Hexlox Key and a 6 mm Allen key: remove the inserts, loosen the Hexnuts, and the wheel comes out as usual.

Is the insert included?

No. The Hexnut works together with a 6 mm Hexlox insert and the Hexlox Key, both sold separately.

No lock in the world is 100% secure. Hexlox stops the quick, opportunistic theft of parts – for the frame itself, always use a good frame lock and a fixed anchor point, as Hexlox recommends too.

About Hexlox

Hexlox was founded in Berlin in 2016 with one idea: bike bolts are already highly specialised, so instead of replacing them, build a lock that fits into the bolts you already have. Designed and made in Germany, Hexlox is sold through more than 500 bike shops in over 67 countries – worry less, ride more.