Product review (4 stars): *** SAVE ALL YOUR OLD PARTS ***
Even though I ordered under this listing, the package label said it was for Dryer.  And it certainly looked like this image, not my actuator..
No matter. I used the old assembly parts. Screws, Plastic actuator, plastic cup/shield/spacer Slotted for screw clearance.
My Install without cabinet dissassembly:: Using just the new switch and old actuator.  use duct tape to keep them aligned, put them in place and started screws a few turns then pushed the spacer/cup up over the switch assy and tighten screws rest of the way.

Didnt have to change terminal connectors in my case.  Of course, use the N O switch terminal