Various embodiments include a method for the manufacturing of washers for locking, each washer having a central hole, a first side comprising a pattern of radially extending teeth and a second side comprising a pattern of radially extending cams, the method comprising forming each washer in successive operations from a washer blank strip, a washer being punched out in a final punching operation. Various embodiments include forming and providing one side of the washer with a flat surface edge zone extending radially outside the pattern of this washer side and punching out the washer with a punch acting against at least a part of said flat surface. Embodiments of the invention also relate to a device for the manufacturing of washers and a washer.