WIPER ARM

PROBLEM TO BE SOLVED: To provide a wiper arm capable of reducing the occurrence of wear in a component in contact with a connection pin by effectively preventing the idling of the connection pin in a wiper arm where an arm body is connected to an arm head via the connection pin.SOLUTION: In the wiper arm 1 including an arm head 2 which can be connected to a driving mechanism, a retainer 3 connected to the arm head 2 so as to be turnable and a connection pin 5 connecting the arm head 2 to the retainer 3, biting parts 13A to 13D in which a part of the connection pin 5 is bitten when the connection pin 5 is caulked are provided at the inner peripheral edge of a fitting hole 13 of the retainer 3, so that rotation around the shaft of the connection pin 5 is prevented by the engagement of a part of the connection pin 5 with the biting parts 13A to 13D.