Flathead screw heads have an individual straight slot on the highest of your screw, requiring a flathead screwdriver. They are really one of several oldest and commonest screw head types. Flathead screws are typically used in apps where by the screw head needs to sit flush Along with the area.
for every of those types of screw drives you will need the right driver head so as to turn it. in the united kingdom and Europe for most DIY and home enhancement programs you can usually only use slotted or pozi drives on a regular basis.
Screws by having an angular form beneath the head will require countersinking that can help stop splitting Wooden when you drill or use power. Countersunk screw head designs sit flush towards a area with little or no protruding parts.
They're fairly new so they're not common place in Do it yourself circles, partly as they are somewhat more expensive way too. They do demand a great deal of drive for being used when drilling or correcting
You may use both equally slotted and Phillips screwdrivers to travel a mixture recess. This operate can be extremely effortless, while it lacks exactly the same tamper-resistant high quality as other, safer styles.
There's a great deal of idea regarding the thread of screws which we will not likely go into to listed here, but you could find a great detailed description listed here on Wikipedia.
equipment screws: comparable to bolts (see below), equipment screws are Employed in threaded holes, which include Those people present in engines and industrial machines. Like normal screws, they don’t have sharp tips.
Hex heads permit larger torque to get used, and therefore are pushed Along with the force Performing in opposition to the surface of the head, not like other versions, which might be internally pushed, They are generally employed for bolts. Pan
The most common style of thread is just one thread, at times named just one begin thread. These screws have one helix of thread running up the screw. These are cheaper to supply and very effective.
Image: istockphoto.com Although some utilize the conditions “screw” and “bolt” interchangeably, these fasteners are certainly various. A screw is designed with threads that Chunk into
Hex screw heads Use a hexagonal recess on the top of your screw, necessitating an Allen wrench or hex important for installation or removing. Hex screws offer high torque transfer and are commonly used in equipment, home furnishings, and also other purposes where by a secure relationship is necessary.
Carriage bolts are kinds of bolts applied to fasten metallic to metal or wood to steel. It differs from other bolts by its shallow mushroom head along with the shank currently being rounded together its entire duration.
Super Sharp issue: generally termed a needle or gimlet stage this is a sharper Model in the AB issue. They are thought for timber, mdf, plastic and lightweight gauge metallic
All above pictures are courtesy of Wikipedia, to discover more about Each and every get more info sort of drive head, see the overall list of screw push head types right here.