what type of screw should i use to
Types of screws (and when to employ them!)
If you've ever been to the fasteners section of a hardware store of abode eye you know how intimidating this experience can exist. You lot may only need a few screws, but what kind should you get? There a bazillion different kinds of screws and there is no manner I can cover them all, so I'll will give you an overview of the about common types of screws and what y'all will need for woodworking.
What types of screws should y'all use in your projects?
For woodworking y'all can narrow it downward to just a few choices. Here are my lesser line recommendations; the best screws for woodworkers.
- I highly recommend using premium or multi-purpose screws, such as Spax, GRK or Hillman.
- Go flat headed screws, the ones with the tapered heads for countersinking.
- If you can, use square or star drives. They work better and will save you a lot of frustration.
- The most common screws I employ and like to go on on hand at all times in my shop are #viii 1-¼" star head screws.
These are the most usually used wood screws in my store.
Why use screws?
I desire to betoken out that I don't really apply a lot of screws in woodworking. Usually I use wood glue, which is stronger and leaves no visible fasteners. The downsides to glue are that you accept to await for it to dry out and once you've assembled something, y'all can't accept it apart.
I frequently utilize screws for shop projects and jigs. With these, I'm non concerned well-nigh the appearance as much and love the time-savings screws give me.
Screws are also used to hold things together where expansion and contraction of the wood can be an upshot. A mutual use is to adhere a tabletop to a base. The screws volition exist set into a slot, allowing the wood to move every bit humidity changes.
For some projects that are sort of in the center basis between making an heirloom dresser and a workbench, I like to use pocket screws. They are great for making cabinets and other casework. They make assembling these types of projects, say a bedframe, much easier and quicker. And of class, yous want to position the pocket holes on the undersides or back of projects where they won't be visible. Learn the nuts of pocket hole joinery.
What's the difference between a screw and a bolt?
In that location is no agreement on this, but personally, I view a bolt as a fastener that goes all the way through ii fabric with a nut attached, while a spiral pulls two pieces together and only the caput of the fastener is visible. Merely I can recall of plenty of exceptions such a car screws.
Are Nails Used in Woodworking?
At that place is a common misconception among not-woodworkers that we apply a lot of nails. Aught could be further from the truth. In the 10 years of projects on this channel, I don't think I have ever used nails in a project, other than for decorative purposes. Sometimes I utilize brads for holding boards together while glue dries, but never equally a sole ways of assembly.
Nails are a pain to hammer in, tin can bend, and you can easily mar the surface of your project with the hammer head. Not only that, but they don't hold nearly as well equally screws and can work themselves loose.
Parts of a Screw
A screw is fabricated up of 4 components:
- The tip
- The shank
- The threads
- The caput
The Tip
Screws used in woodworking will take a pointed tip to assist guide the screw into a precise location. Self-drilling screws have a dissever point that cuts into the woods similar a drill bit. Other screws, such as motorcar screws take no point.
The Shank and the Threads
The treads of a screw wrap around the shank. Together, this is the part that drives into the cloth. The threaded part of some screws stops earlier it gets to the head, while other screws are fully threaded.
Shanks and threads come in different sizes. The diameter is indicated past a number. The most common wood screws are number half-dozen, 8, and 10, the larger the number the bigger the thickness. I nigh ever use #eight diameter screws. Longer screws are usually #10s.
In the U.Due south. threads are sometimes indicated in threads per inch, usually 24 or 32 tpi. These are of import to know with car screws or bolts where you lot need to go a nut to match. Sometimes wood screws come in coarse or fine threads. Use fine threads for hardwoods and coarse threads for softwoods and plywood.
So when you lot are reading a box, the first number volition tell yous the screw bore. This volition sometimes be followed by the threads-per-inch, then and then length of the spiral.
The Head
There are two components of a screw head. It'south head shape and It's drive type. Read on to acquire nigh these.
Types of Drives
There are lots and lots of unlike types of drives, merely thankfully, there are just a few mutual ones you demand to know.
Slotted: What is a Flathead Screw?
Slotted screws are the original method for driving a screw. Like the name implies, it's but a slot that a flathead screwdriver turns. For this reason, these types of screws are usually called flathead screws mode more often than slotted screws.
Flathead screws crave a lot of patience to use and are very hard to drive with a drill or bear upon driver. It'southward weird how common they still are, nonetheless readily available at hardware stores. Basically they suck and I would never recommend them for woodworking with ane exception: if you lot want to make a period piece of piece of furniture with celebrated accuracy. Other than that, avert slotted screws whenever possible.
Phillips
When Phillips screws came out in the 1930s, they were a vast improvement over slotted screws. A Phillips head driver volition stay in identify a lot better, but they all the same accept an annoying tendency to cam-out, or slip when driving the last bit into woods. This tin can ruin the head and also ruins the driver.I have heard that they were designed to practise this in order to prevent over tightening, but I'grand non certain if that's true.
They come in different sizes so e'er make sure your commuter matches and fits well. I really wish Phillips screws would become obsolete, only they are even so extremely mutual in the U.S. the vast majority of screws sold at hardware stores are nevertheless Phillips.
Square (Robertson) Drives
Foursquare drives are a huge improvement! They are besides called Robertson screws and are most common in Canada. They are definitely harder to find in the U.S. Their square shape greatly reduces, nearly eliminating cam-out and commuter slipping. Here in the U.S. you will generally observe these in pocket screws.
Star (Torx) Drive
Star drive screws are becoming more than and more common in the U.S. and are my accented favorite type of drive. The star shape virtually eliminates cam-out and the driver almost never slips out. Plus they can accommodate a lot of torque. Usually they are sold on premium quality screws that won't snap if tightened too much. And when y'all buy a box, information technology usually comes with the driver tip you need.
Head Shapes
Like the drive types, in that location are all kinds of head shapes. Luckily, there are actually only two that mutual in woodworking.
Flathead
This is where the terminology can get a little confusing. It's like shooting fish in a barrel to confuse a screw with a flad head, and a slotted screw that we ofttimes phone call flathead screws. For woodworking a flathead screw is the most common kind of screw to employ. It has a beveled caput that seats neatly into the wood, making it flush with the surface
You can simply power the spiral into the woods to go far flush, merely you will go better and cleaner results if you use a countersink bit to drill a pilot hole, or utilize a countersink to cut the bevels afterward you drill a pilot hole.
Panhead of Rounded
Panhead or roundheads can have shallow or deep domes. They sit down on acme of the wood and aren't used much for woodworking. Y'all will need to utilise these when attaching some other material to wood…something that y'all can't countersink, say metal or plastic.
Types of Screws
Standard Woods Screws
Wood screws are widely available in all home centers and hardware stores and are designed to bring together two pieces of woods together. They are threaded part of the way and so have a smooth shank at the peak. This helps hold the screws in identify. They are relatively cheap and come an all kinds of diameters and head shapes. You will usually want to apply the ones with the tapered heads. Unfortunately, in the U.Due south., almost woodscrews are notwithstanding only available with Phillips heads instead of star or foursquare drives.
Drywall Screws
A lot of woodworkers employ drywall screws, more often than not for store projects and jigs. They are inexpensive, usually cheaper than forest screws and easy to find just about anywhere. They have thinner shanks than wood screws, usually well-nigh equal to a #6 spiral and threads that run the entire length of the screw. Because of their thinness they are actually brittle. Specially ff you are drilling into hardwood, they are actually prone to snapping, only I've had this frustrating experience with using them for 2x4s too. Like wood screws, in the U.Southward. the heads are almost always Phillips. Too, the heads have a bugle shape to reduce trigger-happy the paper on drywall. They don't lucifer the beveled shape of a countersink. In general, I don't recommend using drywall screws for woodworking projects.
What's the difference between a drywall screw and a wood screw?
Multi-purpose (product) screws
Production or Multi-purpose screws are my absolute favorite types of screws. Common brands include Spax or GRK. These screws are fabricated with hardened steel and are incredibly potent. I don't call up I've ever had whatsoever suspension. They have cocky-drilling points that eliminate the demand for a pilot hole, but I would yet pre-drill for disquisitional pieces. Specially near the ends of boards to prevent splitting.
The best part is that they come in star or foursquare drives and then your driver stays in place and won't slip out similar with Phillips. Plus, when yous buy a box, information technology comes with a driver bit. There is really but a unmarried drawback to using these: they are expensive. Maybe twice equally much as regular woods screws. And while my Mere Mortals philosophy is ever to be frugal, this is one instance where I believe it's worth spending the extra money. The amount of fourth dimension and frustration these types of screws save is enormous.
If yous've never used multi-purpose or Spax screws, just go one box and try them out. I guarantee, y'all will wonder why you didn't try them sooner!
Other Types of Screws
Deck Screws
If you are building outdoor projects, use deck screws. They are made of hardened steel and accept a corrosion resistant coating.
Stainless Steel Screw
For even better corrosion resistance, especially on boats and in salty marine environments, you can apply stainless steel screws. While they offer the best protection from the weather condition, they are non every bit strong equally deck screws and are very expensive.
Pocket Screw
Pocket screws are cocky drilling and have a wide head that grabs the flat shoulder made past drilling pocket holes. If you use regular wood screws with pocket holes, they may drive all the way through, or possibly split the wood. I employ the Kreg pocket screws, but yous might exist able to substitute pan head screws. The Kreg screws take a square bulldoze which makes them really like shooting fish in a barrel to seat. Sentinel my pocket hole basics video to learn a lot more about pocket hole joinery.
Automobile Screws
Machine screws have no points and are intended to employ in holes that are already tapped or with a nut. They are threaded along the entire shaft are sold in threads per inch. When yous buy them, make sure the nuts' threads match. You lot may occasionally need motorcar screws to fasten a couple boards together, but they aren't common in woodworking.
Sheet Metallic Screw
Usually, canvas metal screws are tiny with a sharp point intended for piercing and driving into sheet metal. Remember of heating ducts for instance. They usually have pan heads and volition probably work every bit a wood screw if you need a substitute.
And there's a basic look at the various types of screws. While in that location are a lot of choices available, there are only a few different types of screws a woodworker will always need. Know what kind yous need for your project before going to the hardware store or home center. Merely buy what you lot need. I don't recommend stocking upward on anything other than #8 ane-¼" screws. I ever like to have these on hand.
Source: https://woodworkingformeremortals.com/types-screws-use-woodworking-basics/
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