Q: links would be appreciated
A: You cannot buy 'extra long' hard drive screws. You could buy longer screws that would fit the holes in your hard drive, however, if you use a screw that is even slightly too long you would almost certainly destroy your hard drive. Either by driving the screw into the internal circuit board or into the drive platters. I would go to an independent computer store that builds/repairs computers and explain your problem. In the UK at least, they would advise you of what you need probably free of charge and sell you the necessary parts for a very moderate sum. The only situation I can imagine, assuming that you are trying to fit the hard drive into a standard case, is that your hard drive doesn't appear to wide enough to fit the bay in the case. If this so, then what you need is a rail mounting kit, not longer screws.