Up for a challenge
Here is how I did it.
Sketch on front plane
A few dimensions
Revolve 180 reversed direction.
180 revolution will become very handy later on.
Toolbox -> Configure
For how to customize thread, refer to this: https://www.youtube.com/watch?v=DKwnvsM8-xI
Under Sizes use numbers in the the last row
Under thread data use numbers in the the last row
Save and open hole wizard
Choose these settings
You should get this.
I tapped the hole so early because there are things with dimensions to the tapped point.
Sketch on right plane
All dimensions are from PDF file except Ø0.4670 is measured in CorolDRAW. Refer to my previous comment for reasons.
New sketch on right plane
Convert the line and extend it to pass the revolved body
Use this one line sketch to extrude cut
Sketch on front plane
Tangent relationship is not necessary at top but it can give me a fully defined sketch.
I recommend finish this step before you revolve the upper cylinders. Otherwise this cut intersect with them and you need to create a reference plane and do extrude cut up to surface, which is more work.
The small circle in the middle can be replaced with just a point. It is useful later.
Now you can revolve and merge and leave the center hollow.
Revolve cut the lower part
Sketch on this flat surface and the center of this circle should align with the partial circle in the sketch for revolving. That is why I put dimensions in page 2 into that sketch.
Because I revolve 180 degrees, now you can create a reference plane as pictured.
Sketch on this new plane
Convert the edge and use R0.343 from page 5
Offset 0.284 from page 3
0.1788056 from page 3 is not used anywhere. 0.27 is hard to tell from what to what.
Sketch on top face of upper cylinder
dimensions in page 4
Hole wizard as pictured
Position snaps to points in previous sketch
Revolve cut 180 use temporary axis
Pattern as pictured
Now mirror body and merge
Use the small circle in the sketch here as reference and tap a hole
Tap another hole here snap to the center of the bigger semi circle
Finished feature tree. I do not think I can make it any shorter at the moment.
I hope this helps.