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Best Carabiners & Fasteners · #1

RockLock Screwgate Carabiner

Black Diamond

RockLock Screwgate Carabiner — Best Carabiners & Fasteners
#1
RockLock Screwgate Carabiner
Black Diamond
Gear
Why it made the list

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.

Some links are affiliate links. Buying through them supports our testing at no extra cost to you.

Full profile in progress

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.