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Mammut Workhorse HMS Screwgate Carabiner

Large screw carabiner with good handling

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.


Height: 118.5 mm

Width: 80 mm

Vertical Breaking Load: 27 kN

Opening Breaking Load: 8kN

Horizontal Breaking Load: 12 kN

Weight: 75 g

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

Optimized design for smooth belaying and high service life

Our largest and highest performance locking carabiner