TIGHTENING MEMBER, CLAMP MEMBER AND CLAMP ASSEMBLY

Disclosed is a tightening member for tightening a clamping device for fixing an accessory to a crossbar of a load carrier. The tightening member includes a coupling portion for detachably coupling the tightening member to a coupling section of the clamping device. The coupling portion is engageable with the coupling section in a torque transferable manner. The tightening member comprises an operating portion configured to be grasped and rotated by a user, and the operating portion is operatively coupled to the coupling portion. The coupling portion includes an accommodating portion for at least partially receiving a force receiving portion of the coupling section therein.