Flat-head screw and round-head screws are both used frequently in woodworking and general home repair projects. Each screw is either made with a thread that is designed for either wood or metal. Furthermore, the head of both these kinds of screws are designed to receive either a straight-edged or a Phillips screwdriver. And some screws come with specially designed heads that can accommodate either type of screwdriver. After all these options then there comes the matter of when and where you would use a flat-head or a round-head screw.
The flat-head screw is the woodworker's friend, for he will use this type of screw almost exclusively to hold together all sorts of cabinets, bookcases, stair threads, tables, benches and a host of other items. Usually a cone-shaped depression is made with a countersink tool to hold the head of the screw; and once put in place and tightened the head of the screw is covered with wood putty, sanded down and coated with a wood finish just like the rest of the woodworking project. Flat-head screws also get used in such general construction tasks as hanging drywall, mounting door hinges, mounting cabinets and installing tabletops.
Round-head screws have a much more limited use in the building trades than flat-heads. Also note that round-head is a bit of a misnomer here, for the underside of the screw is flat. This is a very important feature of the screw, for this flat bottom side gives the screw its holding and binding power. This screw is more commonly used with machinery, but you will usually find flat-head screws holding book shelf and lighting tracts to the wall or ceiling. They are also used in lighting fixtures and electrical outlets as well as holding hand rails, towel racks and toilet paper holders to the wall.
- Photo Credit Comstock/Comstock/Getty Images
Clipped-Head vs. Round-Head Nail Gun
Before the invention of nail guns there was only one kind of framing nail--round-head. Once nail guns came along, companies started clipping...
What Are Pan Head Screws?
Pan head screws are a type of fastener that binds materials together or tightens the connection of two or more materials. They...
Wood Screw Vs. Lag Bolt
Wood screws and lag bolts have a lot in common. In fact, a lag bolt is often, and more accurately, called a...
Why Use Fine Thread or Coarse Thread Drywall Screws?
Originally drywall screws were fine threaded and intended for commercial construction. Home construction used nails to tack drywall to boards. The use...
How to Use Self-Drilling Metal Screws
Self-drilling or self-tapping metal screws increase productivity by reducing the number of steps required to screw together pieces of metal. A self-drilling...
How to Remove Flat Head Screws
Whether you call this type of screw a flat head screw or a countersunk screw, the purpose of the screw is the...
How to Use Drill Screws
Drill screws come in a variety of shapes and sizes and are used for multiple applications. As the popularity of the cordless...
How to Use a Micrometer Screw Gauge
A micrometer is a small tool that is used for measuring short distances accurately. It is a type of caliper that can...
What Screws Do You Use in Oak?
Driving a wood screw directly into oak lumber often causes the screw head to strip out or the screw shank to twist...
The Types of Heads on Wood Screws
Wood screws come in many different types, intended for many different uses. Among the parts of a wood screw that can vary...
Types of Screws & Their Uses
Screws come in a variety of materials such as brass, stainless steel, nylon, aluminum, copper, titanium and ceramic. Screw driving shapes, which...