Which one? This one is the most obviously labelled and it is fine (I just checked it.) http://home.earthlink.net/~gamba2/download/SysVII-800k-boot-disks/800kMac-701-miniF/800kMac-701-miniF.bin

But you would be much better off with a System 6 boot disk. They are available from Apple - heaps of them. Do a search - its a legacy software download page or similar.