If screws are not threading into previously used screw holes in an interior door, there are a few things you can try to fix the issue:
Check Screw Size and Type: Make sure you are using the correct size and type of screws for the holes. The screws should be long enough to reach the solid wood portion of the door frame, but not too long that they go through the other side. Additionally, ensure that the diameter and threading of the screws match the original ones.
Fill the Holes: If the existing holes are stripped or enlarged, you can try filling them to create a new surface for the screws to grip. One method is to insert wooden toothpicks or wooden matchsticks coated with wood glue into the holes. Break off the excess and let the glue dry. Once dry, you can reinsert the screws into the newly filled holes.
Use Larger Screws or Anchors: If the holes are too large or damaged, consider using larger screws or using wall anchors designed for screws. Wall anchors provide extra support and grip when inserted into larger or damaged holes.
Drill New Pilot Holes: If none of the above methods work, you can drill new pilot holes slightly adjacent to the original holes. Use a drill bit that matches the diameter of the screws you are using. Be careful not to drill too deep or at an angle, as this could affect the stability of the door.
Consider a Different Location: If the area around the original holes is too damaged or weakened, you might want to consider moving the placement of the screws to a different location on the door frame.
Remember to apply gentle and even pressure when driving the screws to avoid damaging the door or causing the screws to strip. If you're unsure about the best approach or lack the necessary tools and experience, it's best to seek assistance from a professional handyman or carpenter who can address the issue safely and effectively.