Abstract: The combination of an abrasive finishing device and a support pad therefor. The support pad includes circular plastic plates formed to define a depressed center. A fastening member permanently affixed to the abrasive finishing article is attached in such a manner as to form a depressed center section for the abrasive finishing article which is received within the depressed center section of the support pad.

Abstract: An attachment structure for a coated abrasive finishing article such as a disc having a central aperture formed therein. The attachment structure may be in a form to be reused indefinitely and in such form includes a nut having a flange engaging the abrasive particles on the disc and a body extending through the central aperture and terminating in an externally threaded shank adapted to be received by the female threads on a drive member. The apparatus may also be in a form to be disposable along with the spent disc. In such form, the apparatus includes a similar nut formed of plastic material which is secured in place on the abrasive disc by a retention member such a washer which is secured to the body of the nut by an interference fit on the side of the disc opposite the abrasive particles.