HP EliteDesk 800 G2 2.5 inch drive screws

[fbmc]

Where do I get 2.5 inch drive mounting screws.  They are different from the 3.5 inch mounting screws.  These should be the shock resistant mouting screws.

[SDH]

Good luck finding those.  Sometimes extras will be screwed somewhere inside the case but often not.  I have never found a HP source/part number for a set of those.

The standard threads in the sides/bottoms of 3.5" hard disk drives are US threads (UNC) 6-32.  If you search eBay for HP elastomeric mounting screws you'll see a fair number of the blue rubber/silver metal ones (which have those 6-32 threads).

For SSDs, other 2.5" drives, and optical drives the standard threads are M3 metric.

Those, from HP, are black metal, not the silver.  The black metric threaded ones with the elastomeric rubber are very hard to find anywhere.  I got one set off eBay a long time ago.  Some have posted on how to create an equivalent functional set from washers and machine screws.  Substitute in the right length metric screw and try the UNC washers as described in the link below.  Our Ace hardware store has a good metric selection, and my favorite on-line source for such things is McMaster.com.  You can use M3 standard and M3 fender washers instead, but those are harder to find.

Don't try buying the blue/silver ones and swapping in a metric screw.  I tried that.... no go.  You destroy them trying to get them apart.  Here's a good link.... read that bottom post.  Remember that SSDs don't move with use, so you really don't need the elastomeric rubber in place.  You'll need to fiddle a bit, but this idea will work.

http://h30434.www3.hp.com/t5/Desktop-Hardware-and-Upgrade-Questions/Need-a-hard-drive-mounting-screw...

Here's what a set of the silver/blue 6-32 screw ones look like.  The parts are all press-fitted together very tightly.  The price of those on eBay has come down, and an alternative would be to drill out the 2.5" side holes just a tiny bit and force the 6-32 type to screw in:

[fbmc · Accepted solution]

I can't believe this was so dificult for an answer.  I found that they use the 2.5" drive isolation screws on the recent EliteDesk mini series.

The correct answer is:

HP part # 594220-001 - Hard drive isolation grommets (Light Blue color)

They are harder to find than the 3.5" drive isolation screws in the after-market.

Have a great day everyone.

[SDH]

That is great to have the HP part number for the metric fine thread isolation screw, used in 2.5" form factor HDDs and SSDs, in contrast to the 6-32 English coarse threaded HP isolation screws, used in regular 3.5" form factor HDDs.  The key is that the screw itself will be black, not silver.  

The price for the metric black ones still is high..... but at least there is now a good part number to search for.  The elastomeric isolation grommet is blue in both cases.  Here's the picture from the HP PartSurfer site for the M3 version, and the black color of the screw itself is easy to see:

Here is another picture, showing the black color of the screw component more clearly, and the inner thin big black bearing washer also is black.  That outer silver bearing ring is what slides into the slots of the HP computer's 2.5" drive bay, and it is silver for both the English 6-32 coarse thread and metric M3 fine thread versions:

Here's a link that will help, and towards the bottom is a method one guy came up with for pulling the 6-32 coarse version apart and substituting in a M3 screw.  It will be a sloppy fit, but will work.  They are not that easy to get apart, and you can tear the blue elastomer material if you're not careful.  You lose use of that inner big thin washer using his technique (it is very tightly press-fit to the screw), but at least you can get the SSD mounted and be done with it.  To refine his method, you could get a M3"fender washer" in a thin type with large outer diameter from McMaster.com, and add a few layers of short heatshrink to make up for the loss of the thick unthreaded part of the shaft of that specially machined screw he throws away.... that would fit more snugly inside the elastomer hole than the bare M3 screw he substitutes in there:

https://community.spiceworks.com/topic/424701-mount-ssd-in-hp-elitedesk-800?page=2