Abstract: A reciprocating tool includes a housing, a spindle having an end configured to receive a saw blade, and a blade clamp mechanism supported on the spindle and configured to attach the saw blade to the spindle. The blade clamp mechanism includes a locking member movable relative to the spindle between a locked position and an unlocked position. The blade clamp mechanism also includes an actuating member that is rotatable relative to the spindle between an engaged position and a released position. The actuating member defines a gripping surface with ridges and includes a first tab and a second tab, each of the first tab and the second tab protruding radially from the outer gripping surface.