HP 3.5" Hard Drive HDD Screw ProDesk EliteDesk 400 600 700 800 480 680 880 G1 G2 G3 G4 G5 SFF MT Tower
Pretty simple designs. Not perfect but work well. I made these because the other ones I was seeing required purchasing special screws from the hardware store. I haven't verified all the model numbers in the title but they should be good. These won't work with the mini PCs.
There are 2 different designs:
"HP 800 G3 3.5 HDD Screw.stl" requires the torx 15 round screw HP uses for the power supply and motherboard. My thought was you can yoink those screws and replace them with regular coarse thread case screws. This design fits a little snug but is closer to the factory screw.
"HP 800 G3 3.5 HDD Screw Washer.stl" is just a washer with the spacing that matches the original factory screw. Put a normal hex head coarse thread case screw through the hole and you are good to go. The drive will install a little loose but should be good enough to be fine.
Video of me showing them off: https://youtu.be/54IoKaJrJBo
If you need the torx 15 screws I have some I am selling that will work: https://www.ebay.com/itm/226584359424