Paulin #7 x 2-1/4 -inch Flat Head Square Drive Trim Screws Zinc Plated - 100pcs

Used in place of nails for superior holding power and where disassembly is required. Wood Screws cut their own thread in wood and can sometimes be installed without pre-drilling. This allows the two pieces to be drawn tightly together.

Used to fasten metal to metal, metal to wood and other types of materials, with machine tapped threads or nuts, where disassembly may be required or where a more secure clamping of parts is desired.

Apply drywall first to ceilings then to side walls. Install side drywall vertically with edges parallel to studs, or horizontally across the studs, which ever way will produce the minimum number of joints. Be sure to dimple head of screws to accept compound. Recommended for steel stud applications.

Also known as Sheet Metal or Tapping Screws. Metal screws are used to join sheet metals, metal to wood and to join other types of soft and /or thin unthreaded materials. These screws tap their own threads and are not intended to be disassembled often.