drywallscrewsshelvingstuck
I drilled the anchors into the wall and used the screws they came with. The screws wouldn't drill all the way in to lay flat against the shelf, so I tried removing the screws from the anchors and the anchors came with them . Now the screws are stuck inside the anchors with the shelf in between them and I can't get them apart. Any tips?
Windows typically have 2 or more studs on each side. Use a stud finder to ensure you are installing on a stud, then predrill with a bit slightly smaller than the solid part of the screw (not the threads themselves).
You can put a little soap on the threads of the screw if you want to try to make them easier to install, but I would focus on maintaining pressure and keeping the drill in perfect alignment with the screw. A skipping bit typically indicates that you aren't properly lined up with the screw. Also note that drill bits do wear out over time, particularly if you are skipping them on the screw head a lot, so it could be time for a new one.
See also:
What is the best technique for using a drill to insert screws?
When pre-drilling for screws, how do you determine the correct bit diameter?
Suitablilty of fasteners for supporting bracketry in concrete depends mostly on the weight.
There are overlaps between light and medium duty , based on screw size and depth of penetration. Follow package directions closely. Drill the exact size hole and depth called for, the fastener retention depends on it!
Best Answer
The type of plastic drywall anchor that you show on those screws can be removed by holding the anchor with a pair of pliers and then back out the screw with a philips screwdriver. After the plastic part has been removed toss it into the trash.
Note that that type of anchor is not suitable for hanging a wall shelf unless that shelf is a piddly small thing only intended to hold some small nick-knacks. Any other application should have the screws going directly into studs in the wall.