Colin Wilson wrote:
Does anyone know where I can buy a pack of fixing screws to mount hard discs in
PC case?


Take one out of an existing drive - they don`t slide around much as a
rule, so you can get away with having one per drive.

Cowboy repair. That will likely increase the noise due to vibration
transmitted between hard drive and chassis.

To the OP, yes, Maplin do sell mixed packs, but they also sell...

http://www.maplin.co.uk/Module.aspx?...re w%20x%2050

(search for "Hard Drive Screw" if link doesn't work), 50x for £1.99,
quite cheap in my opinion.

CPC (www.cpc.co.uk) sell a similar 50x pack for £5.38 (rather pricy!) or
a 10x pack for £1.03 - but unless (like me) you live in Preston then the
postage is likely to screw(!) you on such a small order.

The thread for a HD screw is #6-32 coarse thread (which, apparently,
during a quick google on this) is an american thread, without a metric
equivalent. Then, to contradict, someone suggests an M3.5 x 0.6mm is
equivalent - if you need to source individual screws. The thread(!)
http://forums.bit-tech.net/showthread.php?t=77555 is slightly interesting.