I have disassembled many hundreds of these disc drives for the local scrapyard,they want the ally,
(Iam not into home foundry work) i wanted the screws,magnets,and bearings. However, try finding a tap the right size for the screws. Not the metric ones (quite rare), but the coarse ones. If you find one the right size please let me know where you found one.
Cheers Deko