OK, so I have another question about shoulder washers.
The set of screw and washers provided for mounting the heatsink on the pcb includes a shoulder washer. I must have lost one of them. There is a Burmuda Triangle under my bench where parts go and are never seen again. I cannot find a match for the shoulder washer to replace it. The ones I found on the chart from Keystone either are too small for the screw to fit through or too big to fit in the opening of the transister. Because these sets were prepackaged there was no specification of the size of any of the components. Can you help me identifiy the shoulder washers so I can get a replacement?