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Positive Locking Carabiners

(Steel Carabiners)

Carabiners which are to be used for life support must be "positive-locking" which means that it requires 3 motions to open the gate. These three motions usually consist of pushing the carabiner sleeve up or down, twisting the sleeve, and finally, pulling the gate inward. Some carabiners replace the first step with the pressing of a button. Life support carabiners must also have a breaking strength of at least 5,000 lbs. WesSpur stocks a wide variety of carabiners that meet his standard for you to choose from. (For more on Arborist safety standards, check out the ANSI Z133 safety standards for arboricultural operations.)

All carabiners on this page are positive locking.
Positive Locking Carabiner
Positive Locking Carabiner

Petzl D Carabiner

The Petzl D Carabiner is one of our most popular. Compact shape, excellent action, key-lock gate and a high breaking strength make this a good choice. Available with ball-lock or tri-action metal gates. Rated at 6,300 lbs (28 kN).
Features: Aluminum - 6,300 lbs tensile - Weighs 2.6oz - Key Lock
Dimensions: 4 1/4” x 2 1/2” Gate Opening: 3/4”
Ball Lock Gate
Item #car101
Tri-Action Gate
Item # car102
Positive Locking Carabiner

Petzl OK Tri-Act

The Petzl OK carabiner is oval shaped and compact. Tri-act, keylock gate. Rated at 5,400 lbs (24 kN).
Features: Aluminum - 5,400 lbs tensile - Weighs 2.6oz - Key Lock
Dimensions: 4 1/4” x 2 1/2” Gate Opening: 3/4”
OK Tri-Action Gate
Item # car126
Positive Locking Carabiner
Positive Locking Carabiner

Petzl William Carabiner

This carabiner offers a wider opening for accepting more rope, hardware, or just making it easier to clip in. A smooth locking carabiner with key lock gate, available with ball lock or tri-action metal gate. Rated at 5,625 lbs (25 kN).
Features: Aluminum - 5,625 lbs tensile - Weighs 3.1oz - Key Lock
Dimensions: 4 3/4” x 3 1/4” Gate Opening: 1”
Ball Lock Gate
Item # car103
Tri-Action Gate
Item # car104
Positive Locking Carabiner

Omega Pacific Swing Gate Carabiner

Extra wide opening swing gate makes it super easy to clip this carabiner onto all kinds of connections. This carabiner is individually tested for smooth action, strength, and high performance. Rated at 5,175 lbs (23 kN).
Features: Aluminum - 5,175 lbs tensile - Weighs 4 oz - Pin Lock Gate
Dimensions: 4 1/4” x 2 1/2” Gate Opening: 1”
Item # car105
Positive Locking Carabiner

Omega Pacific NFPA Carabiner

This carabiner is built to NFPA standards. It features a very high breaking strength and a pull-down gate which is easier to open with one hand than normal carabiner gates. Rated at 6,750 lbs (30 kN).
Features: Aluminum - 6,750 lbs tensile - Weighs 4 oz - Pin Lock Gate
Dimensions: 4 1/2” x 2 1/2” Gate Opening: 3/4”
Item # car106
Positive Locking Carabiner

ISC Wales Mongoose Carabiner

Oversized carabiner fits well in the hand and has room for lots of gear or large diameter lines. 2 gate options: 3 stage auto, 4 stage auto (Quadlock). Rated at 6,750 lbs (30kN).
Features: Aluminum- 6,750 lbs tensile - Weighs 4 oz - Key Lock Gate
Dimensions: 4 7/8” x 3 1/2” Gate Opening: 1”
3 Stage Gate
Item # car122
4 Stage Quadlock Gate
Item # car120
Positive Locking Carabiner

ISC Wales HMS Carabiner

HMS shape is great for rappelling and climbing. 2 gate options: 4 stage auto (Quadlock) and springlock auto lock. Rated at 5,625 lbs (25kN).
Features: Aluminum- 5,625 lbs tensile - Weighs 3 oz - Key Lock Gate
Dimensions: 4” x 2 3/4” Gate Opening: 3/4”
4 Stage Quadlock Gate
Item # car116
Springlock Gate
Item # car117
Positive Locking Carabiner

Kong HMS Auto-Block Carabiner

Pear shaped carabiners are ideal for use with descenders such as figure eights and the Gri Gri. The bell shape allows plenty of room for your descender, rope, and d ring. This Kong carabiner has a knobby plastic gate that is easy to open. Rated at 4,950 lbs (22kn).
Features: Aluminum - 4,950 lbs tensile - Weighs 3 oz - Key Lock Gate
Dimensions: 4 1/2” x 3” Gate Opening: 1”

Item # car107
Positive Locking Carabiner

Kong Auto-Block Rescue Carabiner

Aluminum Kong rescue carabiner has an easy to grip textured plastic gate, wide mouth for multiple attachments, and is high strength, making it a popular auto-locking carabiner among tree climbers. Rated at 6,750 lbs (30kn).
Features: Aluminum - 6,750 lbs tensile - Weighs 3 oz - Key Lock Gate
Dimensions: 4 1/2” x 3” Gate Opening: 1 1/8”
Item # car108
Positive Locking Carabiner

Large Modified D Carabiner

Triple locking aluminum carabiner with a metal sleeve gate. Wide opening for easy attachment onto Dee rings. Rated at 5,850 lbs (26kn).
Features: Aluminum - 5,850 lbs tensile - Weighs 3 oz - Key Lock Gate
Dimensions: 4 3/4” x 3” Gate Opening: 7/8”
Item # car123
Positive Locking Carabiner

HMS Carabiner

HMS pear carabiner has metal triple-action gate that snaps closed quickly. Wider top end allows easier attachment and bent pear shape is great for attaching to figure 8s.. This carabiner is a great value for climbers. Rated at 5,625 lbs (25kn).
Features: Aluminum - 5,625 lbs tensile - Weighs 3 oz - Key Lock Gate
Dimensions: 4 3/4” x 3 1/2” Gate Opening: 1”
Item # car124
Positive Locking Carabiner

Captive Eye Carabiner

Captive eye carabiner has a metal gate and a captive eye large enough to accept 1/2" rope. This pear shaped carabiner features a groove in the top inside corner of the carabiner to make sure hardware is positioned correctly every time. Rated at 5,625 lbs (25 kn).
Features: Aluminum - 5,625 lbs tensile - Weighs 4 oz - Key Lock Gate
Dimensions: 5 1/4” x 3” Gate Opening: 7/8”
Item # car109
Positive Locking Carabiner

Bent Pear Carabiner

Bent pear shapes are easier to hold and open with one hand. Rated at 5,625 lbs (25 kn).
Features: Aluminum - 5,625 lbs tensile - Weighs 4 oz - Pin Lock Gate
Dimensions: 4 3/4” x 3 1/4” Gate Opening: 3/4”

This carabiner is currently out of stock and on backorder. This carabiner will be backordered and sent when available, with no freight charge on the backorder.

Item # car110
Positive Locking Carabiner

Swivel Eye Carabiner

Features a groove to keep rope properly aligned and a swivel for easy positioning while in use. Rated at 5,400 lbs (24 kn).
Features: Aluminum - 5,400 lbs tensile - Weighs 5 oz - Pin Lock Gate
Dimensions: 8” x 2 3/4” Gate Opening: 3/4”
Item # car111
Revolver Positive Locking Gate Carabiner

Revolver with Positive Locking Gate

The Revolver is a popular carabiner with a built-in pulley to reduce rope drag by up to 40%. This is a great carabiner for redirects, rescue, and is compact and well designed.

Also available with a wire gate and a screw lock gate.

Features: Aluminum - 5,400 lbs tensile (24kn) - Weighs 3.1oz - Key Lock
Dimensions: 4 1/4” x 2 1/8” Gate Opening: 5/8”
Item # car127
Steel Positive-Locking Carabiners
Positive Locking Carabiner

ISC Wales Big Dan Steel Carabiner

Oversized carabiner fits well in the hand and has room for lots of gear or large diameter lines. 3 gate options: 3 stage auto, 4 stage auto (Quadlock), and springlock auto. (50 kn).
Features: Steel - 11,250 lbs tensile - Weighs 10 oz - Key Lock Gate
Dimensions: 4 7/8” x 3 1/2” Gate Opening: 1”
3 Stage Gate
Item # car118
4 Stage (Quadlock) Gate
Item # car119
Springlock Gate
Item # car121
Positive Locking Carabiner

Carbon Steel Rescue Carabiner

Kong carbon steel provides a super breaking strength for this wide-mouth carabiner. Great for attaching multiple slings, ropes or anchors. New version features a shaped metal gate that is easy to open in gloves or rain. Rated at 11,250 lbs (50 kn).
Features: Carbon Steel - 11,250 lbs tensile - Weighs 10 oz - Key Lock Gate
Dimensions: 4 1/2” x 3 1/4” Gate Opening: 1 1/8”
Item # car114
Positive Locking Carabiner

Compact Steel D Carabiner

Compact and strong, this carabiner has impressive strength. A good rigging, climbing, or rescue carabiner, without anything fancy. Rated at 11,250 lbs (50 kn).
Features: Steel - 11,250 lbs tensile - Weighs 10 oz - Key Lock Gate
Dimensions: 4 1/2” x 3 1/4” Gate Opening: 3/4”
Item # car115
Positive Locking Carabiner

Offset D Zinc-Plated Carabiner

Zinc plating for maximum life is one of the great things about this compact but very strong biner. Fits easily in one hand, has a textured gate which is easy to open even when wet or wearing gloves. Perfect rescue carabiner. Rated at 10,125 lbs (45 kn).
Features: Steel - 10,125 lbs tensile - Weighs 10 oz - Pin Lock Gate
Dimensions: 4 1/2” x 3” Gate Opening: 3/4”
Item # car112
Positive Locking Carabiner

Bent Pear Zinc Plated Carabiner

Zinc plating adds durability and long life to this great shaped, steel auto locker. Carabiner gate is textured for a good grip. Bent pear shape helps ensure that the carabiner is always loaded properly. Rated at 9,000 lbs (40 kn).
Features: Steel - 9,000 lbs tensile - Weighs 10 oz - Pin Lock Gate
Dimensions: 4 1/2” x 3” Gate Opening: 3/4”
Item # car113
Positive Locking Carabiner

Captive Eye Zinc Plated Carabiner

Zinc plating for maximum durability and life, captive eye, and textured metal gate are several great features of this carabiner. Rated at 10,125 lbs (45 kn).
Features: Steel - 10,125 lbs tensile - Weighs 10 oz - Pin Lock Gate
Dimensions: 4 1/2” x 3” Gate Opening: 3/4”
Item # car125
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