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The Workhorse Screwgate carabiner is the strongest Mammut carabiner and one of the most robust models on the market. Its size allows user-friendly operation even when wearing gloves. The opening width and volumes are large enough to accommodate several ropes, slings, and knots. It is ideal for use as a central carabiner for anchoring as it is particularly robust and durable.


The screw locking is easy to operate even in icy or dirty environments. The key lock nose allows easier clipping and unclipping without snagging. An orange marking indicates when the carabiner is not closed.


Engineered with & certified by UIAA



  • Our largest and highest-performance locking carabiner
  • Optimized design for smooth belaying and high-service life
  • Orange marking provides a warning if the carabiner is not screwed closed
  • Key lock nose for easy clipping and unclipping without snagging
  • Easy to operate screw locking, even in dirty and icy environments


Product Details

  • Suitable for: mountaineering, Climbing
  • Item number: 2040-02560
  • Vertical breaking load: 27 kN
  • Open breaking load: 8 kN
  • Horizontal breaking load: 12 kN



  • Hardware Main Fabric100% Aluminium

Mosqueton, Mammut Workhorse HMS Screwgate

Out of Stock
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