Expansion bolt

An expansion bolt is a type of fixed anchor used in sport climbing. It consists of a metal bolt that expands when tightened, securing it firmly in a pre-drilled hole in the rock. Climbers clip their carabiners into quickdraws attached to these bolts for protection as they ascend. Expansion bolts are favored for their strength and reliability, providing a safe anchor point to prevent falls.

Examples

In lead climbing and sports climbing, an expansion bolt plays a crucial role. Climbers attach these bolts to the rock face to secure their protection as they ascend. The bolt expands when placed in drilled holes, anchoring firmly in the rock. This mechanism provides a reliable point to clip quickdraws and attach the rope. Climbers rely on expansion bolts for safety, knowing they are designed to withstand significant force. In sports climbing, routes are pre-equipped with expansion bolts at regular intervals. This setup allows climbers to focus on their movements without the constant worry of placing protection. The consistent use of expansion bolts across many routes promotes a standardized and safer climbing experience.