Lost Nut on Leveling Jack

I used a "roll pin", basically a rolled up piece of spring steel, unfortunately I don't remember the size. Take the cap to a hardware store that has those bins of small hardware and find the right size; it should be tight so that you have to use a hammer to push it in. Get more than one and keep for the next time it breaks. I have broken three so far.
 
I believe the nut is like a socket that fits over the shaft of the long acme screw. The roll pin or cotter pin only keeps the nut from falling off. It does not really transmit any torque.
 
I agree that using a power driver may shorten the life of the pin, but that won't keep me from doing it. I just keep spare pins and a spare cap in the trailer for when it fails. Not having to crank the jack by hand is worth the trouble of replacing the pin now and then.
 
rotus8 said:
I agree that using a power driver may shorten the life of the pin, but that won't keep me from doing it. I just keep spare pins and a spare cap in the trailer for when it fails. Not having to crank the jack by hand is worth the trouble of replacing the pin now and then.
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This will be way over the top to many…

I could see riveting the nut to the shaft. A shallow countersinking of the pin holes in the nut with a drill press, then rivet flush with a steel non-galvanized nail of the right size. Say, a finish nail.

It’s a method I’ve used, coincidentally, on a small shop-made ball-peen hammer I use for riveting!
 
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