No, there are a lot of different sizes used across brands - and there are metric and imperial threads which is likely the cause of your almost fitting ones. What standard? - if don't like it, wait a few minutes and another will come along ... :) BillK On 6/6/20 10:06 am, Dale wrote: > Howdy, > > I know this sounds like a silly question and I never thought I would > have to ask such a basic question like this.  I bought a external hard > drive enclosure and was trying to install a hard drive I had laying > around.  The screws that come with the enclosure doesn't fit.  The > screws have a coarse thread and it seems the drive case has fine > threads.  It's the only screws that come with it so it has to be for > that purpose.  Anyway, I dug around my screw bin and found a few > screws that fit better but still not quite right.  I went to ebay and > typed in 100 hard drive screws.  I want to buy a bag of them to have > around when I need them.  It's amazing what I got for results.  Some > list a brand they fit.  Some say laptop, few mention a desktop > system.  Looking at pics, some seem to be coarse thread, some sort of > fine thread.  Some standard, some metric.  Some are phillips head and > some look like allen type or star type heads.  I'm sitting here > wondering, is this nuts or what?  Pardon the pun there.  It's just > crazy.  lol > > Is there not a standard sized screw that should fit all 3.5" and even > 2.5" drives??  Whether they are spinning rust, SSD or the outdated > floppy drives.  Are they THAT different or are the pictures > misleading?  If there is a standard or does WD take one size screw > while Seagate takes another and Toshiba yet another?  If someone has > found a size that fits them all, could you please share the sizes or a > link so I can have something to go by?  I already have a few hundred > screws that don't fit.  I really don't need yet another 100 to add to > the don't fit anything pile.  > > What happened to the simple days where things would just fit like they > should??  ^_O > > Thanks for any hints. > > Dale > > :-)  :-)  > > P. S. The enclosure I got is a eSATA or USB type.  I use the eSATA > connector.  Found it on Amazon and it's a Rosewill.  The enclosure not > long ago was about $60 each.  I got two for $54 with free shipping.  > It has a temp controlled fan too.  I bought other USB only enclosures > that wasn't worth the shipping much less the cost of the item.  I > think I had one that worked fairly well but was really slow.  Maybe it > was USB2 but I suspect it was defaulting to USB1.  A few others failed > after a short time, I suspect USB issues myself.  I still need to run > up on a good deal on a PMR type 8TB drive, designed for 24/7 use.  I > need to expand /home.  It's at 70% right now.  o_O