HPL

I have a 1970 Raleigh Sports with perfect threads on the hub axles, as well as perfect "R" chromed nuts for the front; rear nuts are not damaged either. I had removed the front hex nuts and replaced with some old wing nuts I had laying about. I do not know what bike the wing nuts originally came from and they are not marked. I used them vice the original nuts due to transporting bike in a Mini Cooper and always having to remove the front wheel to store the bike. Unfortunately, I partially stripped one wing nut; still usable due to removing a washer and grabbing enough good threads. The wing nuts are alloy, and without any brass or steel threaded insert making threads easier to strip. I assumed they must have been from a fairly old race bike to be all aluminum. They fit the hub threads properly, not at all loosely, and certainly not too tight. I do not know what the hub threads are in order to ensure that when I replace them I order the correct parts for front (and rear); but not without inserts if alloy. Possible to bore out my alloy wing nuts and install correctly threaded inserts?? The hubs are original to the bike; rear hub is S-A "AW" dated 69 13; front hub Raleigh OE. Are both hubs Whitworth threads? Are there wing nuts available for that thread style if required? I have have other wing nuts (different sized; front and rear?) that fit early French hubs ('30s--'60s), and others fitting Italian hubs; but none will fit the English hubs (front or rear; tried on 1954 Hercules, 1965 Robin Hood, and 1970 Raleigh). All my other wing nuts are "steel", or have brass threaded inserts.

Quick side note: riding the "Hood" and hit a speed bump hard enough to bounce me off the saddle (though not off the bike), probably only 12-13 Kph. The rear hub locked up to forward motion. I got off bike and turned crank in reverse without issue but felt a little rough. I was able to get forward motion, but it locked up again and I partially popped a chain link. End of ride! I rode as a "foot scooter" on one pedal all the way back home. Any thoughts before I tear it apart, I have never had this happen. The speed bump definitely was part of the cause. I ride the Raleigh Sports with same model rear hub much harder and faster both on and off road (even used for a race with clipless pedals), and have never had anything like this regardless of the bumps and jumps. Granted the Sports hub has lower mileage (I assume) than the Hood.

Thanks!!