Anyone know the diameter of the holes for the trim pin not anywhere near my boat right now and need to get another bolt to put through

I think its 5/16" but possibly 3/8". Make sure you get a grade 8 bolt.

If you don't get it from GT you may have to special order it due to its length. A hardware store generally won't have that length.

We'll see it just so happens that I'm a mechanic in a big plant and just so happens that I'm at work right now may have to go rummage through

I'm just planning on using the bolt when trailering I'm gonna heat up one end and press it flat drill a hole and put a cotter pin through leave the one from GT in the bottom hole so when I get to the ramp I can just pull out the top pin

It's 3/8s, I got 3/8s metal dowel. Bent a 90* and drilled a hole for cotter pin. I leave the factory bolt in the bottom hole.

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Ten foe appreciate the info