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Am'D Screwlock
The Petzl Am'D is a D-shaped locking carabiner for connecting devices to the harness.
The Am'D aluminium asymmetrical carabiner has a more practical D shape that is suited to connecting belaying systems or holding gear. Its shape and Keylock system make operating it easy, even with gloves.
The shape and size of this carabiner make it perfect for multiple uses, from attaching a belaying system to the harness to using it at the end of a lanyard. This is one of the lightest and strongest carabiners ever designed by Petzl due to its D-shape.
Great functionality due to its capacity and its size:
- effective shape no matter which way the carabiner is facing (belaying system),
- carabiner can be used to hold large amounts of gear.
Easy to handle, good grip:
- D shape for a good grip,
- shape suited to handling with gloves,
- Keylock system to avoid any involuntary snagging of the carabiner.
Technical Specifications
Material(s): 7000 series aluminium.
Certification(s): CE EN 362, CE EN 12275
Locking system: BALL-LOCK
Major axis strength: 27kN
Open gate strength: 8kN
Minor axis strength: 8kN
Gate opening: 25mm
How do I choose the right carabiner?
Locking system
Carabiner locking systems can be manual or automatic. With manual systems (SCREW-LOCK), the sleeve must be screwed manually onto the gate to lock it.
It is recommended for carabiners that are only operated occasionally, like the main carabiner in a belaying station. Manual systems are also recommended for use in dirty environments where dust and dirt might interfere with the correct functioning of automatic locking mechanisms.
With automatic locking systems (BALL-LOCK, TRIACT-LOCK, TWIST-LOCK), the gate unlocks automatically. These systems are recommended for carabiners that are operated frequently, like carabiners linking a belaying or rappel system to a harness.
Ball-Lock System (BL) - Automatic locking system and triple action gate
- Shape
Advantages:
• Rapid auto-locking.
• Visual locking indicator.
Disadvantages:
• Sleeve must be unlocked every time carabiner is opened.
• Sleeve operation is fiddly especially with gloves, requires practice. A less "ambidextrous" system than others.
• Two hands are needed to insert a device into the carabiner.
- Safety
Advantages:
• Security of triple action locking (excluding rubbing and external pressure).
• Rapid auto-locking.
Risks:
• Chance of not locking properly when the carabiner closes (e.g. sling caught between the nose and the gate). The user must verify that the carabiner is properly closed and locked, even when using an auto-locking system.
Carabiner shape
The different shape of carabiners and making the right choice of carabiner shape will increase the ease of handling and safety for specific uses.
Carabiner shape has an impact on:
• major axis strength,
• load distribution,
• gate opening size, and capacity,
• strength in certain positions,
• ease of handling.
Another less obvious effect is the balance of the carabiner itself. For example, pear-shaped carabiners rotate more readily, which can result in poor positioning. D-shaped carabiners tend to stay in place better.
Petzl carabiners are available in three different main shapes, each designed for a specific use:
Asymmetrical D shape:
For attaching belaying and rappel systems, or for use at the end of a lanyard.
Pear shape:
For anchoring several ropes, slings or other devices, and to make rotating the knot easier when belaying with a Munter hitch.
Symmetrical oval sh
For attaching belaying systems, pulleys, or gear. Prevents jerking when loading.
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