On Saturday, 6 June 2020 04:06:54 BST Dale wrote: > We have reds, purples, greens and all sort of color codes for hard > drives, maybe they need to color code their screws as well. :/ > > Now to go find a grab bag or something. This sucks.
Yes, getting the thread wrong and damaging the female thread in the enclosure, while thinking this /almost/ fits, is not good for your nerves. There are thread gauges which you can match the pitch of a screw/bolt and help determine the thread specification, but they are typically used for larger screws/holes: https://en.wikipedia.org/wiki/Thread_pitch_gauge A way to determine a *potential* match between screw and hole, is to count the turns per unit of length and of course the diameter of the hole. Use a magnifying glass and measure how many turns you can see inside the whole, while holding a piece of thin wire in it. You need only dip the wire up to the first 3 threads, but if you can see further in, even better. Then offer *exactly* the same length of wire against your screws and see which of these matches. Then use a reference table to find out from your thread pitch and diameter a likely specification for your screws; e.g. http://theoreticalmachinist.com/Threads_UnifiedImperial.aspx P.S. if you have no magnifying glass you can use binoculars or a scope, looking from the far end, or the camera of a smart phone, or an SLR. > P. S. It seems those older not working enclosures may have caused issues > with my drive. I'm having to dd the first one, redo the partitions and > still having issues getting it to work. May be a doorstop when this is > over. You're not saying what problems these are, but smartctl should report anything amiss with the drive internals. Otherwise, check power supply and loose connectors.
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