Offshoreonly.com - Trailer coupler bolts

Quote:

Originally Posted by zz28zz (Post 4871674)

If I understand the situation correctly, the holes in the coupler are 1/2" dia and the holes in the trailer tongue are 5/8" dia. If thats the case, I'd find another coupler that uses 5/8" bolts. I seriously doubt the coupler manuf will approve drilling out the holes. Why would they? Their risk/reward ratio would be completely out of balance. If they did approve it, I'd want it in writing for sure, but even then, they could day you didn't drill it correctly.

Is regards to grade-5 vs grade-8, there's a lot more to it than which is stronger. Corrosion resistance being one example, ability to bend vs break is another good point made prev.

Correct I swapped out the coupler for one that had 5/8 holes in it and has a 21k rating as opposed to 15k the first one had. I reused the 5/8 hardware the trailer came with. I'll feel better towing with that setup over the other one. I could have it welded for even more security but I don't think that's necessary.