For the same product description.
2 different screws:
- One on the positive plug which is screwed into the plug itself,
- And the second that the negative plug screwed on the plastic support.
The problem (if one wants screw) screws are too small to stay in their box with the wire.
It is also very difficult to apply washers for pressing son.
Finally, if you have any bricoleux as a box containing screws / nuts / washer from a dozen computers, well preserved for almost 20 years .... no ... they do not serve you.
With that, if you expect to pay the bare minimum and adapt this laborious system solder, go there. If you count "Open / unscrew / ask / screw / close" are not even count!