1 1 4 fine thread drywall screws

The incorporated washer, on the other hand, serves multiple purposes. Primarily, it increases the bearing surface, thereby distributing the load from the screw more evenly across the material it's screwed into. This prevents damage to the surface, such as splitting or indentation, which can occur when a screw is tightened without a washer. Additionally, the washer can also help in reducing friction and preventing loosening due to vibration.

...

Overall, countersunk head self-tapping screws are a versatile and reliable fastening solution that offers several advantages over traditional screws. Whether you are working on a DIY project at home or undertaking a professional construction project, these screws can provide the stability, security, and aesthetics you need for a successful outcome. With their ability to create clean and flush finishes, save time during installation, and withstand tough conditions, countersunk head self-tapping screws are a valuable addition to any toolbox or shop.

...