Petzl OK Autolock Carabiner — Oval Aluminum, Auto-Locking
When you need a carabiner that stays put, loads correctly, and handles the demands of professional climbing, the Petzl OK Autolock delivers. Its oval shape keeps pulleys, rope clamps, and mobile fall arresters centered and stable — no shifting, no misloading. The Keylock closure eliminates the snag points that can catch on gear or ropes, and the auto-locking gate means one less thing to think about when you're focused on the work above.
Key Features
- Oval Shape — Keeps devices centered for optimal loading, ideal for pulleys and rope clamps
- Auto-Locking Gate — Automatically locks after each use for added security
- Keylock Closure — Snag-free nose design prevents accidental unclipping on ropes and gear
- Lightweight Aluminum — Only 2.8 oz for minimal added weight on your harness
- Wide Gate Opening — 3/4" opening for easy clipping even with gloves on
- CE Certified — Meets EN 362, EN 12275 Type B, EAC, and GB/T 23469/B standards
Specifications
- Shape: Oval
- Material: Aluminum
- MBS (Minimum Breaking Strength): 24 kN
- Weight: 2.8 oz
- Gate Opening: 3/4"
- Gate Type: Auto-locking (Keylock)
- Certifications: CE EN 362, EN 12275 Type B, EAC, GB/T 23469/B
- Vendor: Petzl
- SKU: KM33ATL
Frequently Asked Questions
What is the difference between an oval and a D-shaped carabiner?
Oval carabiners keep the load centered, which is ideal for pulleys, rope clamps, and fall arresters that need to stay aligned. D-shaped carabiners shift the load toward the spine for higher strength-to-weight ratio, but can allow devices to shift. For climbing hardware, oval is usually the better choice.
What does "Keylock" mean?
Keylock refers to a smooth, hook-free nose design on the gate. Traditional carabiners have a notch that can snag on ropes, webbing, or gear. Keylock eliminates that snag point for cleaner, safer clipping and unclipping.
Is this carabiner rated for life safety?
Yes. The Petzl OK Autolock is CE certified to EN 362 and EN 12275 Type B, making it suitable for life-safety applications. Always inspect before use and retire any carabiner that shows signs of wear, corrosion, or has been subjected to a significant fall load.
What is the MBS and how does it relate to safe working load?
MBS (Minimum Breaking Strength) is the minimum force at which a carabiner is expected to fail under standardized testing conditions. For example, a 24 kN rating means the carabiner will break at or above 24 kilonewtons in a controlled test.
Safe working load (SWL) is typically a reduced value derived from MBS using a safety factor, but for life-support equipment like arborist carabiners, SWL is not usually specified. Instead, the gear is designed and tested to meet industry safety standards. Always follow applicable standards, manufacturer guidelines, and your employer’s safety procedures when using climbing equipment.