/diy/ - Do It Yourself

>>2605537
My guess is that you either didn't drill a hole in the 2× or did and it's so small that the screw threads are biting into the 2×.

Then whatever bit of gap is present when the screw engages with the anchor is still there when the screw head bottoms out and can't turn anymore.

Easiest solution is to make the hole in the 2× just big enough so that the screw threads can't bite into it and the screw spins freely, then whatever gap is there when it engages in the anchor or material you screw into will get taken up as the screw head and threads act like a clamp.

This is coincidentally why you see screws with smooth shank areas just below the head.

As for drywall screw anchors, picrel are far better than the shitty soft plastic ones and won't blow your walks out like toggles. Cheap enough you can overkill the shit out of things like shelf brackets, never had one fail yet.