Bolt for gate

Just ask any dog - they'll all make a bolt for the gate if you let them :-)

More seriously, if the thing just binds a bit then it can't be difficult to file or grind the pin to fit.

One used to see a lot of gates with a little metal wheel under the swinging end, indeed you could often see a track in the concrete where it was opened. That seems to be a thing of the past now. Brian

I have one on my garage door that I converted from 'up and over' to hinged a few months ago (the conversion was to increase the clearance at the top to accomodate a tractor). So they're still available.

Simpler to use a cone drill to open up the hole in the post.

Assuming it is a decent sized bolt (half inch or more) there's no point going to stainless for corrosion resistance even if you are on the coast.

The welder tried that with a hammer, then filing the inside of the 'keep' then filing the bolt itself. It is still tight. I can work it but I lack confidence in my neighbours (and the binmen obviously don't understand the mechanics of how a gate works, or they have not been on the correct training module).

I don't blame the welder as the gate seems to be aligned perfectly but the bolt mechanism (which was there already) is slightly misaligned.

More filing needed and in the right place !! If the bolt is bent may need quite a bit. If you do go down the" welding a new bolt" direction consider adding a good gate closure or spring , makes life easier for those who cant work bolts and you dont have to keep going out and shutting the gate again.