Granger or McMaster have screws of all types.
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It depends on the type washer thats with your SP10, I have had a few through here - the current one have a flat on top washer with a bushing part through the platter - it use a M3 x 12MM screw. I have had others that have a countersink on top the washer too - they probably don't need to be 12MM long is my guess. If you want drop me a PM and Ill put 3 of them in the mail to you. Good Listening Peter |
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. |
https://systems.audiogon.com/systems/4923 Above a link to my system with a picture of the washers I mention, I've had two different kinds, two of each, two like this and two with a larger screw head where the washer also had a cavity in which the screw head sinks into. In the picture the screw is not the "original" one, the washer is. Good Listening Peter |
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.) |
Lewm - Maybe not but I have had two identical ones both with this type washer - bought at different times and from completely different sellers. I will post a picture tomorrow of the other type I have had come through here of this type I have also had two identical ones. I have asked my customer to send me a picture of it. The screw is not "original" as stated its just a standard M3 x12MM slotted screw. Good Listening Peter |
That's interesting. Just snapped a pic of my -- I think -- original screw and now see that there is a clear plastic or similar sleeve on the underside, apparently serving like a washer. It makes sense that someone adding a replacement screw would use a washer, and that there's no need to do so with this type of screw. My pic is here: https://drive.google.com/file/d/0B1VBmhfX0CeaZTBmV2RqTWZBcDA/view?usp=sharing Cheers, Spencer |
Just received the picture from my customer, the other type is identical to the ones Spencer posted, hence probably the original. The other type I have must be an "aftermarket" version, strange that I would end up with two of them :-) Anyway the screws I mailed to the OP will work just fine - in case he's still here. Good Listening Peter |
A little "googling" taught me the original platter screws are "pan head shoulder screws." There seem to be several sources in England, or one could have them custom made in China if you needed several thousand or so. If someone with the original screws would be so kind to measure them with calipers, perhaps we could find a good match here: http://www.automotioncomponents.co.uk/en/catalog/mechanical/shoulder-screws/stainless-shoulder-screws/p0144.a2 |