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  • Black Diamond - RockLock Screwgate Carabiner -

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  • Black Diamond - RockLock Screwgate Carabiner -

Black Diamond RockLock Screwgate Carabiner

Temporarily Out Of Stock

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43 Reviews


BD's Biggest.

The RockLock Screwgate Carabiner is Black Diamond's biggest biner for belaying, top rope anchors, and long-lasting durability in the climbing world. Black Diamond designed this locker with a keylock nose for snag-free unclipping, a curved spine for a larger gate opening, and a square hinge to hold your belay device in place.

  • Screwgate locking carabiner
  • Snag-free keylock nose
  • Item #BLD00HF

Tech Specs

Gate Type
screw lock
keylock nose
Major Axis Strength
24 kN
Minor Axis Strength
7 kN
Open Gate Strength
7 kN
Gate Opening
21 mm
Claimed Weight
3 oz
Recommended Use
Manufacturer Warranty
1 year

Tech Specs

  • Reviews
  • Q & A

What do you think about this product?

Have questions about this product?


  • Familiarity: I've put it through the wringer

I've bought them before and I'll buy them again. This is a great biner for most anything! They are round enough to make an easier time for multipitch belaying as well as perfect for a regular belay device carabiner or burly enough to rely on for anchors! They're great for anything and hard to wear out. 10/10

Big boy with a lock

  • Familiarity: I've put it through the wringer

I got a few for boating applications as the screw gate is a necessity in whitewater. They work great to hold down an ammo can or in a z-drag.

Great value

  • Familiarity: I've put it through the wringer

I have quite a few of these because they are durable and affordable. I use them as my go to for setting up top rope for climbing, rappels for canyoneering, belay devices and other odds and ends with my activities. You definitely can't wrong with these and for the price you can bulk up your supplies.

Burly for belaying and anchor building

  • Familiarity: I've put it through the wringer

My favorite biner for belaying or for toprope- the large diameter of the metal ensures smooth rope movement with less drag. Two of these make an excellent top rope setup attached to the anchor. Not the best for trad, as they are a little heavy. I prefer the Petzl Attache or other similar lightweight locker. But for single pitch sport, top rope, or gym climbing, this is my favorite.

Best Belay Biner

  • Familiarity: I've put it through the wringer

This carabiner compliments any ATC so well. They are big and durable which allows them to outlast much rope drag. I also really like how they are round, smooth, and easy with the rope. It is reassuring to know that when there is a lot of tension on the rope held by the carabiner that it is not harming the rope in any way. I have one of these for every ATC that I have and I have not had any regrets.

It works.. but I hate the screwgate

  • Familiarity: I've used it several times

The biner itself is sturdy and large, but the screw motion of the gate feels cheap and poor. If you've touched a screw gate on a Petzyl, they feel great--tight, smooth, clean, and secure. The Rocklock feels cheap and inaccurate and displeasurable. I'd recommend the Petzl Attache or Wiliams Locker over this one. Still a great locker that will do the job, though. But I won't be buying more.

buckles are partially misplaced

    The buckles are partially misplaced and can not be stuck in the correct slot. I feel very disappointed in this, because I am a Chinese buyer and I have received the product, I ask for a claim.

    Great Gear

    • Familiarity: I've put it through the wringer

    Like everything Black Diamond produces, their climbing hardware is among the very best. Reliable and durable in the coldest of cold climates. BD is my go-to for hardgood gear!