Abstract: A printed wiring board (PWB) is attached to a PWB holder with mounting hardware which includes a washer having a first annular surface with a first external diameter for insertion into a mounting hole in the PWB and a second annular surface with a larger second external diameter. The two external diameters form an annular shoulder on an exterior side of the washer that extends between the first and second external diameters for soldering the washer to the PWB. The washer includes a resilient flange interior to its opening. A screw for mounting the PWB is inserted through the opening and has a screw head larger than a diameter of the opening and a second end with an external diameter smaller than the diameter of the opening, but larger than an internal diameter of the flange, so that the screw is held by the washer when the second end is forcibly inserted through the resiliently flanged opening.