| Shape | Asymmetric taper (one face bigger) |
| Fits | Flaring & pin-scarred cracks |
| Useful for | Aid & trade routes |
| Difficulty | Advanced |
An offset nut is a wedge-shaped passive protection piece with one face larger than the other, designed to fit flaring or piton-scarred cracks where parallel-sided nuts won’t seat. Their asymmetric taper makes them especially useful on aid routes and old trade routes pocked with pin scars.
Why the shape
The unequal faces bridge flares and the divots left by old pitons — placements a symmetric nut would slip out of.
When to use them
Flaring cracks, pin scars, and aid routes; a complement to standard passive gear.
Frequently asked questions
What is an offset nut?
An offset nut is a nut whose two faces are different sizes, giving it an asymmetric wedge shape. This lets it seat securely in cracks that flare or taper unevenly — placements where a normal, symmetric nut would only touch on one edge and pop out.
When do you use offset nuts?
In flaring cracks and in piton scars — the divots left where pitons were once hammered in and removed on classic and aid routes. Their shape matches these irregular slots far better than standard nuts, making them prized for old trade routes and aid climbing.
How do offset nuts differ from regular nuts?
Regular nuts have a symmetric taper for clean, constricting cracks; offset nuts have unequal faces to bridge flares and uneven slots. Many trad climbers carry a set of offsets alongside standard nuts to cover awkward placements.
Sources
- Trad and aid protection — American Alpine Club