Technics Sp-10 platter screws

Peter, Before reading your post, I would have agreed with JP, but the sum total of my personal experience with the Mk2 is equal to 2 samples (one each of a Mk2 and a Mk2A).  Neither had washers under the platter screws, unless you are using the term "washer" to describe the cylindrical unthreaded area just under the head of the screw.  Anyway, I suppose a thin washer could do no harm, either way, so long as the head of the screw does not protrude above the level of the platter surface.

My impression would be that the screw shown in the photo is definitely not an original.  Photos of the original can be found on the Soundfountain website, or simply by Googling "SP10 Mk2 platter screws".  The screw shown would probably require a washer as it is longer than original and might bottom out in the threaded hole before it achieves its purpose of pulling the platter down against the drive shaft/spindle assembly, without the benefit of a washer.  (I don't know that for sure, but it does seem possible.)

Tim, Same goes for the two samples that I have owned.  (Or do you in fact own my Mk2A?  I've forgotten.)