Best Carabiners & Fasteners · #1
RockLock Screwgate Carabiner
Black Diamond

The default locker for anything that matters. A large, keylock-nose HMS shape with a hot-forged body, a smooth screwgate, and enough basket width to take a munter hitch, a belay device, and a glove-thick hand all at once. If you own one locking carabiner, own this one.
Pros
- Large HMS basket takes munter hitches and belay devices easily
- Keylock nose never snags on slings or bolt hangers
- Smooth screwgate action even with grit and gloves
Cons
- Heavier than aluminum wiregate lockers
- Screwgate must be checked manually every time
Best uses
- Bear hangs and haul lines
- Belay and rappel rigging
- Anchoring a tarp ridgeline under tension
Where to buy the RockLock Screwgate Carabiner
We link straight to the manufacturer's own catalog for the exact make and model, plus Amazon where it's carried.
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We're building out complete profiles for every pick on every list — specs, materials, real-world use notes, and photography. This entry is next in the queue. In the meantime, the ranked note above is our short answer for why it made the list.

