allen key (1.5mm)

grabcad

People often ask about Allen keys, specifically what kind is used to drive bolts and screws. They commonly seek out an Allen wrench, which many mistakenly call an Allen key. To drive a bolt with this tool you typically turn it left then right in one smooth motion until it has made several full turns around its circumference at which point you tighten the object. The screw or bolt is tightened when turning is in that specific counterclockwise direction for example the direction being referred to when you hear a clock going clockwise would also make a turn, the bolts do turn as the clockwise and anticlockwise directions.