Have called three local locksmiths and no joy

Are replacement keys available for this? I have none and would like to be able to lock it up...

Possibly one of these brands?
https://leonardaccessories.com/categ...lacement-keys/

Bed Mount Tool Box


Delta 702260

Duh, anyone have source for spares?

 

If you can get in it now, it’s fairly easy to swap the lock out with one that has keys. If you can’t get into it, you can drill it out and then replace it.
I’ve done it both ways with locks that I already had on hand.

You can search “tool box lock replacement” on Amazon for a possible replacement

Alternatively if you have any keys that fit the key way, you can try them to see if they’ll turn it. I’ve had success with that as well. I found three keys that I had in my spare keys collection that fit the last one I worked on and all three of them were cut differently but still would lock and unlock it.

 

Look closely at the face of the lock cylinder - there should be a key number etched into it beside the key slot. Google that number with the word "key" and you should get a few sources. Make sure the pictures match the keyway in your lock cylinder before ordering.

I always swap mine to this:

...so I have a few good lightly-used original latches with keys, if that's what you want. But it's a LOT more convenient to just buy that one IF your ignition key is the later 8-cut. On my older trucks with 10-cut keys, I swap the doors to 8-cut, and then build an 8-cut ignition cylinder to match the new door keys.