The first thing to note about wood screws is that you get Self Tapping Screws and regular wood screws. A self tapping screw is generally a lot easier to install and takes a lot less effort. All you need to do is use either a Philips or flat head screw driver and put the point of the screw on the spot you want it to be and start screwing. As you turn the screwdriver the screw will cut into the wood and make a hole for itself. No drills required Then there is the regular wood screw. You will need a drill for this one. You will need to mark out all the places that you are going to want to put screws and drill a hole in the wood that is the right size for the screws you are going to be using. Then you need to go along and, using the correct kind of screw driver, screw all the screws into place.
Sharp or Blunt at the End?
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Some screws are sharp, allowing you to pierce wood with them as you screw them in. Some screws are not sharp because they are used to join metal, which has a hole already drilled into it. The machine screw is blunt on the end because it is designed to be used where there is a tapped hole already in place.
Choosing the Right Length of the Screw
The screw that you are using has to be long enough to go completely through the two pieces that you are joining together. In the case of the machine screw, they have to be long enough to also add a nut at the end. The nut keeps the screw from moving or being worked loose, which is important in the case of machinery that may have a high rate of speed or vibration.
The more movement, the more likely the screw is to work loose. In some applications, the required size of the screw will be listed, but that is not always the case. Before you start a project, it is important to know the likely sizes that you need and to have a few other options just in case.
The Type of Head of the Screw
When you mention the type of head of a screw, there are two things you are talking about. First, does the screw lay flat on the surface, does it stick up a little or is it meant to be turned in flush with the surface completely?
You also need to make sure that you get the right kind of screws in terms of the material they are made out of. Some metals are more rust resistant than other and some will leave a nasty stain if you use them in wood as they react to the sap still left in the wood. So first do some research and figure out exactly what you need and what kind of screws you are going to be using.