Are you sure it is 5/16? The replacement bolts have been 3/8 for the last 15
years or so. You still see a 5/16 one every now and then, but give a 3/8 a
shot to see if it fits.

Justin
wrote in message
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Trying to replace trim tab on mercruiser outdrive.
5/16 bolt stripped by last owner. Any ideas how
to get it out.

Thanks