Animation Project

The Valve Stem shown in the pictures is from an autoclave Fill Valve.  Notice the two holes on the base plate
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<img src="https://www.allclaveparts.com/images/stem.jpg" width="Image width" height="Image height" alt="Image description" />
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Typically, to remove the stem from the valve body requires a Spanner nut...which looks like a nut with 2 pegs on each side.  

The nut slides over the stem to the base plate where the pegs fit into the holes.  Then a wrench is used to turn the nut.  Most of the time, the pegs on the nut end up breaking off, rendering it useless <img src="https://www.allclaveparts.com/images/ILS014.jpg" width="Image width" height="Image height" alt="Spanner Nut" />
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What I am looking for in the animation is:
<ul>
	<li>Show a nut being screwed onto the stem all the way to the bottom of the threads</li>
	<li>Show a second nut being screwed down until it touches the first nut  </li>
	<li>Place a wrench on the top nut and another wrench on the bottom nut</li>
	<li>Hold the top nut steady with the wrench while turning the other nut counterclockwise with the other wrench</li>
	<li>Unscrew the stem from the base</li>
</ul>

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<br><img src="https://www.allclaveparts.com/images/solenoid valve/DSC03541.jpg" width="Image width" height="Image height" alt="Image description" />
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For Context, here is the complete valve being disasembled
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<img src="https://www.allclaveparts.com/images/solenoid valve/DSC03544.jpg" width="Image width" height="Image height" alt="Image description" />
<img src="https://www.allclaveparts.com/images/solenoid valve/DSC03546.jpg" width="Image width" height="Image height" alt="Image description" />
<img src="https://www.allclaveparts.com/images/solenoid valve/DSC03547.jpg" width="Image width" height="Image height" alt="Image description" />
<img src="https://www.allclaveparts.com/images/solenoid valve/DSC03552.jpg" width="Image width" height="Image height" alt="Image description" />
<img src="https://www.allclaveparts.com/images/solenoid valve/DSC03557.jpg" width="Image width" height="Image height" alt="Image description" />
<img src="https://www.allclaveparts.com/images/solenoid valve/DSC03558.jpg" width="Image width" height="Image height" alt="Image description" />
<img src="https://www.allclaveparts.com/images/solenoid valve/DSC03560.jpg" width="Image width" height="Image height" alt="Image description" />
<img src="https://www.allclaveparts.com/images/solenoid valve/DSC03561.jpg" width="Image width" height="Image height" alt="Image description" />