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| M3x4 is the size. Most hardware and "big box" home materials stores have them. Allen or torx head will work, torx gets the edge, IMO, because it is far less likely to strip out the tool interface when tightening and loosening. Kind the source of the torx idea and name really, once folks figured out that putting a hex wrench inside the screw, versus outside, was not such a great idea. |
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