Due to vibration and other external forces, carabiner gates can be unintentionally released. This video shows two different carabiners in a vibration test. Standard screwgate carabiner v locnut carabiner. The standard screwgate carabiner undoes and releases from the anchor point. The locnut carabiner remains 100% secure - making the Locnut carabiner the safest on the market. www.roperaustralia.com
While karabiners have been widely used for many years and generally perform well it is believed that they can still be prone to failure for example by the sleeve unintentionally loosening through use, by frictional contact with other equipment or simply by being inadequately tightened over the gate. The inadequacies of the triplock design are currently being discussed worldwide, specifically in relation to dirt and sand ingress making the triplock gate inoperative.