Ratchet Wrench

I've seen ratchets used on big valves that were located so hand wheel couldn't work.

[Ed Heimbach]

Dave, double threads are just as they sound, there are two helical paths circumscribed around the bolt.
This is a special thread used mostly on clamping operations, some milling machines and lathes use them because the nut only needs to be turned a little bit to get a large movement on the shaft or bolt that to which it is attached.
I hope that you find this helpful, Ed.
P.S.
I like your solution, it is a good example of putting common sense to work and getting the job done.

[Dave Haak]

Threads

Ed Heimbach,

I assume faster thread nut means a coarser thread.

About the other............OK.............I'll bite (no one else did):
What's a double thread?.........cringe.....cringe.........

My common sense has been taken over by my desire to possibly learn something.

Dave

[Ed Heimbach]

Dave, maybe a good spot for a faster thread nut, or possibly a double thread!
Just a thought.

[ChadRat]

that is sweet! good job!

[Dave Haak]

Got something that needs a full-time wrench? Tired of "wrench on/wrench off/wrench on"? Even dedicated a wrench to something, with a place to hang it, but it didn't get hung back up! Here's an idea.


Dave

P.S...........................anyone have a similar project and need the 3/4" end.