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Locking Carabiners

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KONG-OVALONE TWIST LOCK ANSI LUNAR WHITE

KONG
Original price $29.99
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Current price $23.99
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Current price $23.99
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Oval carabiner carbon steel, wide-opening. High load of 40 KN. Ideal for heavy-duty Key features: The reinforced sleeve offers greater resistance...

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ARMBURY D Steel Carabiner - Screw Lock 53 kN Steel Connector

ARMBURY
Original price $17.27 - Original price $17.27
Original price
$17.27
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Current price $17.27
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The ARMBURY D Steel Carabiner is a professional-grade steel connector built for rope access, industrial fall protection, and rescue applications. I...

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Original price $17.27 - Original price $17.27
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ARMBURY D Steel Carabiner Triple Lock

ARMBURY
Original price $20.58 - Original price $20.58
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The ARMBURY D Steel Carabiner is a heavy-duty D-shaped steel carabiner built for industrial safety and rescue applications. Its zinc-plated finish ...

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KONG-HMS NAPIK ALU AUTO BLOCK ORANGE

KONG
Original price $19.99
Original price $19.99 - Original price $19.99
Original price $19.99
Current price $15.99
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Current price $15.99
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Aluminum connector with 3 actions Auto Block sleeve and Keylock system. The classic wide pear shape makes it suitable for belay with a clove hitch....

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Original price $19.99
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KONG-HMS NAPIK ALU SCREW ORANGE

KONG
Original price $16.99
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Current price $13.59
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ALUMINUM CARABINER | SCREW SLEEVE Aluminum connector with screw sleeve and Keylock system. The classic wide pear shape makes it suitable for belay ...

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Original price $16.99
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KONG-HMS ALU | GREY

KONG
Original price $16.99 - Original price $21.99
Original price $16.99 - Original price $21.99
Original price $16.99
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Current price $13.59
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Aluminum connector with screw sleeve and Keylock system. The classic wide pear shape makes it suitable for belay with a clove hitch. Can be used wi...

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Original price $16.99 - Original price $21.99
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KONG Tango Aluminum Double-Gate Carabiner

KONG
Original price $26.19 - Original price $28.99
Original price $26.19 - Original price $28.99
Original price $26.19
$20.95 - $23.19
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Current price $20.95
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Aluminum carabiner with a double gate safety system. To open the carabiner push the rear gate with your palm while pulling the front gate with your...

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Original price $26.19 - Original price $28.99
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KONG-FERRATA ALU AUTO BLOCK RED

KONG
Original price $19.99
Original price $19.99 - Original price $19.99
Original price $19.99
Current price $15.99
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Current price $15.99
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Aluminum carabiner with 3 movements Auto Block sleeve and Keylock system. Its special shape allows a large aperture (less than 26 mm!) and excellen...

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KONG-X LARGE ALU AUTO BLOCK KL-Red

KONG
Original price $23.95
Original price $23.95 - Original price $23.95
Original price $23.95
Current price $19.16
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Current price $19.16
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Light alloy carabiner with Auto Block sleeve. The X-Large is designed to offer a wide gate opening and a high tensile strength. The particular D sh...

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Original price $23.95
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Original price $23.95
Current price $19.16
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ARMBURY ORBIT SC Oval Screw-Lock Carabiner

ARMBURY
Original price $17.98 - Original price $17.98
Original price
$17.98
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Current price $17.98
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Light-alloy oval carabiner with a screw-lock gate and catch-free nose, designed for compatible belay devices, pulleys and rope clamps.Specification...

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ARMBURY HING SC HMS Screw-Lock Carabiner

ARMBURY
Original price $19.42 - Original price $19.42
Original price
$19.42
$19.42 - $19.42
Current price $19.42
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Hot-forged light-alloy HMS carabiner with a screw-lock gate, rounded basket and catch-free nose for compatible belay and rope-handling systems.Spec...

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Original price $19.42 - Original price $19.42
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Current price $19.42

ARMBURY O Steel AG Oval Triple-Lock Carabiner

ARMBURY
Original price $17.27 - Original price $17.27
Original price
$17.27
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Current price $17.27
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Zinc-plated oval steel carabiner with a triple-lock gate and catch-free nose for compatible pulleys, ascenders and descenders.Specifications and se...

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Original price $17.27 - Original price $17.27
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Current price $17.27

Armbury Hardy SG Screw-Gate HMS Carabiner

RopeHub
Original price $25.68 - Original price $25.68
Original price
$25.68
$25.68 - $25.68
Current price $25.68
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Armbury Hardy SG Screw-Gate HMS Carabiner The Armbury Hardy SG is a large, pear-shaped HMS carabiner with a screw-lock gate for mountaineering and ...

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Original price $25.68 - Original price $25.68
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Current price $25.68

Armbury Hardy SGW HMS Screw-Gate Carabiner with Wire Pin

RopeHub
Original price $27.35 - Original price $27.35
Original price
$27.35
$27.35 - $27.35
Current price $27.35
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Armbury Hardy SGW HMS Carabiner The Armbury Hardy SGW is a large, pear-shaped HMS carabiner with a screw-lock gate and wire pin for securing it to ...

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Original price $27.35 - Original price $27.35
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Current price $27.35

Armbury Hardy AG HMS Triple-Lock Carabiner

RopeHub
Original price $28.79 - Original price $28.79
Original price
$28.79
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Current price $28.79
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Armbury Hardy AG HMS Carabiner The Armbury Hardy AG is a large, pear-shaped HMS carabiner designed for mountaineering and work at height. Its spaci...

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Original price $28.79 - Original price $28.79
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$28.79
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Current price $28.79

Armbury Hardy TG HMS Twist-Lock Carabiner

RopeHub
Original price $27.22 - Original price $27.22
Original price
$27.22
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Current price $27.22
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Armbury Hardy TG HMS Twist-Lock Carabiner The Armbury Hardy TG is a large, pear-shaped HMS carabiner with a twist-lock gate for mountaineering and ...

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Original price $27.22 - Original price $27.22
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$27.22
$27.22 - $27.22
Current price $27.22

Armbury Domain SG D-Shaped Screw-Lock Carabiner

RopeHub
Original price $24.75 - Original price $24.75
Original price
$24.75
$24.75 - $24.75
Current price $24.75
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Armbury Domain SG D-Shaped Carabiner The Armbury Domain SG is a large, lightweight aluminum carabiner with a screw-lock gate, designed for anchors ...

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Original price $24.75 - Original price $24.75
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$24.75 - $24.75
Current price $24.75

Armbury Domain TG D-Shaped Twist-Lock Carabiner

RopeHub
Original price $26.29 - Original price $26.29
Original price
$26.29
$26.29 - $26.29
Current price $26.29
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Armbury Domain TG D-Shaped Carabiner The Armbury Domain TG is a large, D-shaped aluminum carabiner with a twist-lock gate for anchors and rigging. ...

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Original price $26.29 - Original price $26.29
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$26.29 - $26.29
Current price $26.29

Armbury Domain AG D-Shaped Triple-Lock Carabiner

RopeHub
Original price $27.86 - Original price $27.86
Original price
$27.86
$27.86 - $27.86
Current price $27.86
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Armbury Domain AG D-Shaped Carabiner The Armbury Domain AG is a large, D-shaped aluminum carabiner with a triple-lock gate for anchors and rigging....

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Original price $27.86 - Original price $27.86
Original price
$27.86
$27.86 - $27.86
Current price $27.86

Armbury Oasis TG Oval Twist-Lock Carabiner

RopeHub
Original price $25.46 - Original price $25.46
Original price
$25.46
$25.46 - $25.46
Current price $25.46
in stock

Armbury Oasis TG Oval Twist-Lock Carabiner The Armbury Oasis TG is a full-size oval aluminum carabiner with a twist-lock gate, designed especially ...

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Original price $25.46 - Original price $25.46
Original price
$25.46
$25.46 - $25.46
Current price $25.46

Armbury Oasis AG Oval Triple-Lock Carabiner

RopeHub
Original price $26.93 - Original price $26.93
Original price
$26.93
$26.93 - $26.93
Current price $26.93
in stock

Armbury Oasis AG Oval Triple-Lock Carabiner The Armbury Oasis AG is a full-size oval aluminum carabiner with a triple-lock gate, designed especiall...

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Original price $26.93 - Original price $26.93
Original price
$26.93
$26.93 - $26.93
Current price $26.93

Locking carabiners are a crucial tool for climbers looking to ensure their safety while ascending or belaying. Whether you’re a beginner or advanced climber, RopeHub offers a wide selection of locking carabiner in various sizes and features for all your climbing needs, and always at unbeatable prices. Shop our selection of locking carabiners and Climbing Products for all of your climbing essentials!

What Are Locking Carabiners?

Most carabiners have an open gate, secured by a mechanical fitting and pressure applied via an internal spring. Ordinary carabiners can be opened by simply pressing on the gate arm. The reasoning behind the basic design is that for an accidental opening to occur, the carabiner gate arm would have to be pressed on from the outside. This is considered to be unlikely, plus, your climbing rope is usually only expected to apply outward pressure from within the loop. Therefore, ordinary, non-locking carabiners are considered safe for most applications.

A locking carabiner, by contrast, incorporates a metal sleeve that slides over the gate opening, making it impossible (or extremely unlikely) for the gate to open without the user intending it to open. The sleeve has to be unlocked or unscrewed before it can be maneuvered out of the locked position.

So, when might you need something like this? There are seven distinct instances that call for locking carabiners.

When to Use Locking Carabiners

1. For Belay

Any time there is a reasonable expectation that your rope may press on the gate from an unexpected direction, that is a reason for locking carabiners.

2. Belay from Above

When another is belaying above you, that is even more reason to use locking carabiners, since the consequences of failure are more severe.

3. Attaching to an Anchor

Any time you attach your line to an anchor, which you hope to be able to stop a fall by itself, then a locking carabiner is appropriate and recommended.

4. For Top-Rope Anchors

Most of the time when a carabiner is in danger of opening, you will be close to it, but not with top-rope.

5. As Bail Carabiners

Any time you have to abandon a route, it's best to use a locking carabiner for your last anchor on that route.

6. Critical Loads

Any load that you cannot afford to drop, (including yourself), should get a locking carabiner, and using steel carabiners is recommended.

7. Advanced Climbing Systems

Advanced climbers performing difficult or unorthodox maneuvers should use lockers almost exclusively.

Shop Today’s Best Locking Carabiners at RopeHub

At RopeHub, we have a great selection of locking carabiner types, sizes, and features for all of your secure climbing needs. Any of these products will perform well in a range of circumstances. Likewise, each is going to be ideal in specific types of situations.

Check out our selection for the best value for your necessary climbing equipment! For even more tips and product recommendations, you’ll love the RopeHub Blog. Need to brush up on your knot tying skills before your next climb? Our Knot Tutorials can help. Browse and shop today!

FAQs about Locking Carabiners

1: What is the difference between a locking carabiner and a regular carabiner?

A regular carabiner has a gate that opens easily (usually via spring pressure), while a locking carabiner includes an extra mechanism—such as a sleeve, twist, or auto-lock—that prevents the gate from opening unintentionally. This makes locking carabiners safer in high-risk or critical load situations.

2: Which gate locking style is right for me—screw-lock, twist-lock, triple-lock, or auto-lock?

It depends on how much convenience versus safety redundancy you need.

  • Screw-locks are simple and durable—great for anchor work or setups you don’t need to open frequently.
  • Twist-lock or auto-locks allow faster clipping/unclipping, ideal when you’re frequently handling gear or moving.
  • Triple-locks provide extra safety (two-step operation) but can be slower to use. If you often wear gloves or work in dirty or muddy environments, simpler styles may be more reliable.
3: Aluminum or steel—which should I choose?

If you want lightweight gear for long climbs, aluminum is ideal—light but strong enough for most sport or indoor uses. For heavy loads, rescue work, anchors, or situations with high wear, abrasion, or impact, steel is tougher and longer-lasting (though heavier).

4: What strength ratings matter on carabiners?

The key numbers are:

  • Major axis (gate closed)
  • Gate open
  • Minor axis

These are usually expressed in kilonewtons (kN). Also check for safety or industry certifications like UIAA, EN, or ANSI. Always choose carabiners that meet or exceed the strength requirements for your climbing or load type.

5: How do I inspect and maintain my locking carabiners to ensure safety?

Regularly check for cracks, sharp burrs, or corrosion. Ensure the gate opens and closes smoothly and that the locking mechanism operates properly (sleeve threads clean, auto-gates moving freely). Clean off grit, wash with mild soap, and let the carabiner dry completely before storing. Retire any carabiner that fails inspection or has been involved in a serious fall.

6: What size carabiner do I need?

It depends on the application. For belays or anchors, you may want larger gate clearance to accommodate big ropes, multiple strands, or pulley setups. For racking or quickdraws, smaller and lighter carabiners are more convenient. Always match the carabiner size to your rope thickness and system requirements.

7. Are there special locking carabiners for wet, cold, or marine environments?

Yes. Look for materials with high corrosion resistance (stainless steel, galvanized finishes, or anodized aluminum). Gate and lock designs that resist freezing or jamming are preferable. After exposure to saltwater, rinse thoroughly with fresh water and dry completely.

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