bulkchart32 Posted June 22, 2020 Report Share Posted June 22, 2020 the 2 screws that go in the back of the thompson drives, does anyone know what they are so i can order them? my local hardware store couldn't match them. Quote Link to comment Share on other sites More sharing options...
HDShadow Posted June 23, 2020 Report Share Posted June 23, 2020 (edited) The important thing is the thread pitch and diameter and that I do no know. By luck I have my one Thomson drive out at the moment and I've looked at those screws and indeed they do appear to be an obscure type. This is what I can say for sure: they have a Torx 10 rounded head of some sort. I do not have a screw pitch gauge but using a steel rule the screw thread length appears to be 3/16 on an inch, approximately 5mm. They are not M3 (metric) and they are also not 6-32 (UNC) the two commonest screw thread types used in PCs and similar equipment. I know because I've tested the screw holes with both types and the diameter is to big. Also I'm fairly sure they're not the other common (UNC) type: 4-40 either. The diameter could be correct but I have MB standoffs which I think are 4-40 and they do look to have a similar thread diameter. However the thread pitch is definitely not the same. They do not fit and looking at the pitch under a x8 lupe the 4-40 thread is much finer. The Thomson screws are clearly coarser pitch. They may be either M2.5 or M2 course pitch or some UNC equivalent but that is pure speculation. Sorry I can not be more help. Edited June 23, 2020 by HDShadow 2 Quote Link to comment Share on other sites More sharing options...
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