nerf bars (pegs)

[hks308]

i just got some nerf bars for my 300ex but i can't put the pegs on becuase the the nut is not long enough to go through the nerf bar holes and the pegs to hold it all together.

Where can i buy bigger nuts to fit it all?

[bubba's400ex]

lowes or any parts place like that. just bring that one in and they have a sizing chart to find out what size it is. plus it will only cost like $1.