A standard allen bolt willl do the job for a lot less than a genuine Suzuki part, which are made of cheese.
OEM Suzuki are £4.64 each!
09106-10064 is the part number
http://www.robinsonsfoundry.co.uk/co...ootrests/1.htm
Think they are M6 thread, go to your nearest nut & bolt surplier and get something suitable. If not get a pack of various sized stainess allen bolts on EBAY