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Petzl ok SCREW-LOCK (m33A sl) - Aluminum Carabiner - PETZL - 11.0715€ - 1
Petzl ok SCREW-LOCK (m33A sl) - Aluminum Carabiner - PETZL - 11.0715€ - 2
Petzl ok SCREW-LOCK (m33A sl) - Aluminum Carabiner - PETZL - 11.0715€ - 1
Petzl ok SCREW-LOCK (m33A sl) - Aluminum Carabiner - PETZL - 11.0715€ - 2

Petzl ok SCREW-LOCK (m33A sl)

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Oval lightweight carabiner with OK Screw-Lock screw lock is designed to optimally position pulleys, clamps or any other material with a wide section


"OK Screw-Lock" product description

Light, oval and symmetrical safety carabiner of the Petzl brand made of aluminum.

The OK Screw-Lock carabiner with screw lock is designed to optimally position pulleys, ascenders or any other material with a wide section. It is an essential element for carrying out various maneuvers such as lifting loads, zip lines, guided rappels or hoists in which the fixed and centered positioning of the tension is very important.

The fluid interior design allows the rotation of the carabiner and limits the risk of locking in a stable point, perfect for the use of pulleys and ascenders. It has a Keylock system to facilitate handling and avoid snags and has been designed with a red indicator that warns of open closure. The screw closure system is simple and effective and can be operated with one hand, being the only one recommended in environments such as canyoning or caving where impurities (earth, mud...) can block automatic closure systems. In addition, the H-section type provides the best strength/lightness ratio.

The OK Screw-Lock carabiner has a resistance of 25 kN in major axis, a gate opening of 22 mm and has a weight of 70 grams. Approved under CE EN 362: 2004 B, EN 12275: 2013 B and UIAA-121 regulations.


  • Oval symmetrical shape so that the devices (pulleys, ascenders, etc.) are correctly positioned.
  • Made of aluminium.
  • Screw closure with Keylock system (body/trigger union system without closing notch) to prevent it from getting caught.
  • H-profile
  • Longitudinal resistance: 25 kN.
  • Transverse resistance: 8 kN.
  • Open resistance: 7 kN.
  • Opening: 22 mm.
  • Weight approximately 70 g.
  • Certifications: CE EN 362, EN 12275, UIAA-121.

References M33A SL
Weight 70g
Lock system SCREW-LOCK
Colors gray
Resistance major axis 25kN
Resistance minor axis 8kN
Open trigger resistor 7kN
Opening 22mm
Warranty 3 Years
Pack 1
EN362 Connectors

Petzl is a family business that, over time, has become the largest European manufacturer of personal protective equipment for those who evolve sporting or professionally in the vertical world and in the dark.

Petzl, a passion business that is part of the continuity and transmission of this human adventure, with the sole mission of creating value for the user. Petzl's story begins in the 1930s and we introduce it to you below.

Fernand Petzl, passionate caverist and ingenious craftsman, imagines in his workshop tools to explore the depths. In 1968, the inventor markets his first products and founds Petzl in 1970.

For several decades, Petzl has provided a stable environment conducive to innovation and industrial excellence. This same path is what the new generation wants to follow, ready to continue the adventure.

Petzl develops its designs and projects based on pillars and values ​​that motivate them.

For 50 years, four pillars have guided Petzl. Four fundamental values ​​that motivate all its decisions and that are exposed:

Continue to be a stable family business.

Foster the pioneering spirit to imagine the best solutions

Guarantee industrial excellence with a goal of zero defects and be close to our communities by informing about good practices throughout the world for greater safety.

Petzl is aware of its responsibility towards the user who entrusts his life to its devices. That is why Petzl develops, analyzes and qualifies all its products beyond the required standards and norms. Its design center, based in France, integrates all areas related to product design: mechanics, textiles, electronics, optics and computing. From the design and prototype phases, product reliability and user safety are constantly evaluated, paying special attention to the risks of use.

Petzl has laboratories dedicated to product testing: dynamic tests, impact resistance, fatigue tests, performance, quality of light beams and flashlight autonomy. In addition, the tests in the field test the ergonomics and reliability of use.

Do you need a device to work at heights? trust experts, trust PETZL.

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