Originally Posted by
WheresWaldo
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GeneO the walls are not structural and a socket head hex screw should actually sit inside the recess, so the thin walls are simply to cover the outer edge of the bolt head. The specific bolt was listed in the description of the item, if you are using another style of bolt then the head may be too large to fit within the recess.
you must be referring to something else. This calls for a button head m5x10, there is no recess, and the walls are thin. I will post a pic sometime when I get a chance to take it off the saddle.