Hello everyone, today I will introduce screws There are actually quite a few types of screws It's also very widely used In fact, in life, I often see it If you observe carefully, you will find So there are so many screws in our lives It is used in almost many places Why are there so many kinds of screws Because screws are very versatile It is used in many places In response to such different places and locations Or a different function So many types There are so many kinds that I can't finish the introduction Today I will introduce a few of the more common More commonly used To let everyone know I will also tell you how these screws should be called And its specifications How can I get to know it here?
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I'll give a detailed explanation later
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Let's keep watching
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First, let¡¦s introduce the types of screw heads
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There are roughly several kinds for everyone to take a look It¡¦s a little clearer to present it in 3D I will explain it in order We start here The first one is a flat head screw Is a very direct name, the head is flat Some may be called flat head screws Also have this name Next is the round head screw Means the head is round Some people call it a pill head screw This is also possible Next is the umbrella head screw It means the head here is umbrella-shaped Like here is also umbrella-shaped Next is the hex screw This is very common Hexagonal screw Next is the socket screw Socket screws are also very common Generally, the hardness of socket screws is relatively high Hardness 12.9 Of course, other screws can also be made to this specification The most common hardness of socket screws is 12.9 Next, there are screws with washer Some are called flange screws Or washer screws, like this And plate head screws Some people also call the head screw is a salad hole or conical Generally called pan head screws Some people may also call it a flat head screw But if it is called a flat head, it may be confused with the first one So it is still recommended to call it a pan head screw This will make it easier to distinguish Why is it called a pan head screw because it is here Has two slopes Like these two are the head screws (like utensils) This is a set screw or a headless screw It has no screw head, only thread part Roughly the type of screw head I introduced These are the more common ones Everyone, go and find out first Next, I¡¦m going to introduce the types of screws There are also several types of screw teeth I'll explain directly Generally the most common is mechanical teeth Mechanical teeth are usually matched with nuts Whether it has sheet metal or processed parts Processing parts or sheet metal for tapping Let the screw match it Generally this is the state of use Next is the self-tapping tooth like this Or this, self-tapping teeth generally have a larger pitch The screw teeth will be sharper Self-tapping screws can be known literally When it is locked, the object will get teeth out The most common place to use is plastic The plastic column is directly locked in with self-tapping screws It will be attacked and fixed There are shortcomings here If the self-tapping screw is attached too many times Where there is plastic, the screw teeth inside will collapse More prone to damage This is a disadvantage Of course the advantage is that there is no need to match the nut, or the object needs to be tapped Use screws to tap the teeth directly Let everyone understand this part Next is the tail screw (drilling screw) Tail screw means that the tail is like a drill When locked, it may be an iron plate or a thinner iron pipe Wait, when this kind of thing This type of self-drilling screw can be used when there is no reserved hole With electric drill or pneumatic tools After letting it spin at high speed The front end will be like a drill bit to drill a hole into the object Generally self-tapping screws are used Just tap the teeth in this way and lock it in this way The other is wood screws Wood screws, let me take this as an example Is very similar to this Some wood screws also have this sharp tail Some tails are only pointed The main reason for wood screws is that the pitch is also very large. The screw teeth will be a bit sharper The use method is similar to self-tapping screws When wood screws are used, they need to have reserved holes Sometimes if there is no reserved hole to lock directly The wood may split directly, so holes are usually reserved Next is the equal height screws The purpose of contour screws, some are used with bearings Let everyone refer to it here Next, I¡¦m going to introduce the tools used with the screw head How to call it Here I introduce a few more common Our most common is the cross Like this cross screw Just use a normal screwdriver Screwdriver has specifications It is used with screws according to specifications There are large ones, and there are also smaller ones Just look at your screws and match the tools you need Then it's a font Like some screws here will be longer It can be matched with a cross or a word What is the purpose of this Phillips screws sometimes use a screwdriver Easy to crumble Once the tooth is broken, the cross here will look like a circle Once this happens, everyone will be very nervous Don¡¦t want to happen, because then the screws can¡¦t be removed Is very troublesome, of course there are other ways to overcome I won¡¦t discuss it here In order to avoid this situation, it is longer here When the cross is broken Can take a flat screwdriver There is still a way to make the screw open Is quite convenient Next is the hex screw Hexagonal screws are generally matched with open-end wrenches Or adjustable wrench Or a socket wrench is used like this And hexagon socket screws Socket screws are more common Like umbrella heads or dish heads, they also have hexagon sockets Hex socket is matched with hex wrench There are also many types of Allen wrenches Just use it according to the type Set screws are also used with hexagonal wrenches I will introduce a few more It¡¦s not drawn here, let me introduce Like a star screw The star screw is very similar to the hexagon socket It is extended from the inner hexagon, the force is relatively uniform We rarely see this kind of screw What I often see in my impressions seems to be Some wrenches like gourd handles will see There are relatively few applications here, so I didn¡¦t list them To mention roughly The other is Pozidriv screw Pozidriv screws are also used quite rarely I remember the place I saw Wood screws When we lock or buy wood screws, take a closer look The heads of some wood screws are in Pozi The meaning of the word rice is four more contact places here Is to prevent the screw from chipping during use Let me refer you to Here I will introduce how to call the screw Here are a few collocations The type of screw head plus the name of the tool used And the type of thread These three add up to become the name of the screw Of course the name of the screw must be equipped with some specifications For example, in metric system, what is the pitch and length? Expressed in this form, how to call the screw I'll just demonstrate Use existing 3D as a demonstration I use this as a demonstration How to call it? First we see that it is an umbrella head It¡¦s called the umbrella head, and the tool is cross-shaped It is a mechanical tooth Assuming it is M6x10 How do you call it? Umbrella head Phillips screw M6x10 If you want to express the pitch is M6xP1.0 x10 length, this is how to call it Let me demonstrate a few more Like this is a hexagonal screw, suppose it is M8x10 Call it like this Hexagon socket head screw Umbrella head Phillips self-drilling screw Contour screws Set screws Hexagon socket screw Round head Phillips screw Flat head Phillips screw Call the screw name like this I'll match it and use it for everyone here Let you feel it, how do you call it Here is a summary of the screw specifications The use of screw specifications is very extensive Why are there so many kinds of screws? The most important thing is when matching different places Most directly because the screws are used with tools Usually use different screws Ease of use The screws used in some places may not be removed or installed That¡¦s why I replaced it with other screws If we do design or product, The more screws you can know, the more helpful it is to yourself Because in different occasions, functions, places With different screws, the variability is quite large So know more about screws, it will definitely help you Here I will introduce several functional Let everyone know To introduce socket screws If the socket screw has a counterbore in the workpiece It can bury the screw head in Is very convenient, because here is a hexagon wrench The tool is not restricted, so you can bury your head in it For example, pan-head screws are more commonly used in woodworking Or some may also make a dish head type Its intention is to sink the screw head in Hide it so that the surface is flat It is also very convenient Like a set screw, it has no head Generally, screws without heads can¡¦t be tightened The more commonly used here is the fit between the sleeve and the shaft The use of stop screws will tap the shaft sleeve Use a hexagon wrench to lock the shaft sleeve Lock it on the shaft This is a more commonly used function I won¡¦t say more about others, just introduce a few Because there are so many types, I can¡¦t finish the introduction Today the introduction of screw types and specifications ends here If you still have related questions you want to ask Welcome to leave a message We look forward to the next sharing Bye~ Bye~
