How to Join Two Pieces of Wood with Screws?

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When a self-threading screw is spun, it cuts into the material, forming an internal thread. It prevents pull-out by assisting in the attachment of materials.

Screws can be used to fasten a variety of materials, the most common being sheet metal, wood, and plastic.

Flooring screws are suitable for a wide range of materials, including softwood, hardwood, and fiberboard.

They’re easy to assemble and are designed to keep boards from splitting. There are a variety of sizes and finishes available for both residential and commercial installations.

Screws have a few disadvantages, including the possibility of stripped screw heads, which means the slots into which the screwdriver fits have worn down.

The driver’s grip on the screw head has worn down to the point where he can no longer turn it. Stripped screws are difficult to remove, and the process can damage the wood surrounding them.

Types of Screw

  • Wood Screw: A wood screw is probably the most common type of screw. Wood screws are not made of real wood. Rather, they are used to join two or more solid wooden objects. They have a sharp point that can pierce wood, making them ideal for woodworking.
  • Machine Screw: A machine screw is a type of screw that is used in machining applications, as the name suggests. A stove bolt is one type of machine screw. They’re used to connect heavy-duty metal objects.
  • Lag Screw: While lag screws are not as common as wood or machine screws, they are worth mentioning. They are essentially jumbo-sized zinc-coated wood screws that are also referred to as lag bolts or coach bolts. Lag screws are protected from rust and corrosion by a zinc layer. Companies commonly use electroplating or hot-dip galvanization to apply zinc.
  • Sheet Metal Screw: Sheet metal screws, as the name implies, are intended to be driven into sheet metal. They can still be used on other materials such as wood, but they are most commonly used on sheet metal. Threading extends all the way up to the shank at the top of sheet metal screws, allowing them to easily dig into sheet metal.
  • Twinfast Screw: Twinfast screws have a unique design that includes two threads rather than just one. They can be driven into objects twice as fast as traditional screws because they have twice the threading. Most drywall screws are twin fast screws. Having said that, twin fast screws can be used for more than just drywall installation and hanging.
  • Security Screw: They are intended to prevent removal or tampering. Security screws, unlike other screws, do not have an operable head that can be reversed to remove the screw. Rather, removing them usually necessitates the use of a specialised tool such as a spanner or square driver. Because of this, they are an excellent choice for security applications.

How to Join Two Pieces of Wood with Screws?


Make a cross with a pencil in the centre of the two wood pieces where you want to screw and secure them together.


A drill bit that is the same width as the screw should be used. It should not be any larger, or the screw will not be able to grip the wood securely.

The next step is to drill all the way through the upper piece, starting at the point you marked with your pencil.

Use a smaller drill to make a narrow pilot hole at the bottom wood piece before inserting the screw. Drilling too far down is not recommended; only drill deep enough to start the screw.


If you intend to use countersink screws with a shaped head or top that sinks into the wood surface, you must fit your drill with a countersunk bit to allow for the sinking of the head while the screw is being fixed.     


Pilot holes in the second wood surface are simple to make. If the screw is larger than size 6, however, a drill bit must be used.

When screwing two pieces of wood together, it’s critical that all screws are equally tightened to avoid twisting caused by unevenly distributed tension.

Tips and Tricks for Screwing Two Pieces of Wood Together

  • Choosing the right screws for a woodworking project is difficult, especially if you are not a professional. It’s important to remember that not all screws are suitable for use with wood.
  • A countersunk screw (cross-slot head) is the most commonly used screw for wood projects. By using the proper screwdriver to fix these screws, they will not slip and damage the wood surface. Pozidriv screws, which are usually especially hardened, allow you to use three different screwdriver sizes.
  • When screwing two pieces of chipboard or fiberboard together, use special chipboard screws with deep-cut sharp-edged threads that extend all the way down the screw shank for strength and a good grip. It can also be used to fasten wood.
  • When using wood screws, it is critical to use pilot holes if you want the screws to go through straight. This is accomplished by using a bit that is smaller in diameter than the screw diameter, thereby creating a channel for the wood screw to easily follow. Create pilot holes in a hardwood that are the same size as the thread of a screw.
  • It is essential to use the correct length of wood screws that are code compliant. Coating hardwood wood screws with soap or beeswax is a good idea to help the wood screw go into the wood smoother and faster.
  • To avoid loose screws, place the wood screws on a flat metal piece and gently bend the threads down with a hammer.


How to Join Two Pieces of Wood with Screws?

They are commonly used to fasten materials such as sheet metal, wood, and plastic. To learn how to properly join pieces of wood with screws, follow the steps outlined above.

Read: How To Remove Rust From Screws Easily?


Why does screwed-together wood split?

Screws are an effective way to join wood as long as it does not split. If the timber is dry, the boards are narrow, or you screw too close to the end, the screw displacement can cause the fibres to separate, resulting in a less-than-perfect joint and totally destroying the wood.

What types of screws do not split wood?

MDF screws have star-drive heads and come in the same sizes as standard wood screws, but they are intended to eliminate splitting and the need for predrilling.

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