Went to clean bonding wires on a one inch Perko bronze seacock, and wound up turning the bolt with the nut that is coming up through the seacock base! Do you think the bolt comes up from the bottom of the boat, or from below the glassed in backing pads Pearson has installed under each seacock? If it's through from the bottom, I can tap the bolt with a hammer and try to knock it out the bottom-- my fear is if it was glassed in under the backing plate, but inside the hull, then I don't want to hammer it down, or I'll put a new hole in the hull !! Presently I can turn the bolt itself but cant tighten the nut or loosen the nut. What I was thinking is to hold the top of the bolt thread with a vise grip and try to tighten the nut back down to hold the seacock down tightly again. (there is a second bolt coming up through the Seacock that is 180 degrees from the problem one. The seacock is in rock solid and cannot be moved or rotated at all.

My feeling is maybe I should hold the bolt with a vise grip while tightening the nut back down onto the seacock till it's tight again. And leave it at that?

What's the consensus on best way to proceed!

Thanks.

Rodd L