Titanium countersunk head screw,mostly in is a flat head screw, and the flat head screw means that the head of the screw exhibits a flat angle of ninety degrees.
Titanium Countersunk screws are a classification of screws. The head and bottom of this screw are flat and not the same as ordinary screws. Most screws have sharp surfaces that can be used to mount on a variety of mechanical components. Titanium Countersunk screws are screws that can only be mounted on mechanical surfaces. These titanium screws are not particularly strong, but can be used on many mechanical components. How is the countersunk screw used? Now let's take a look at how to use the countersunk screw.
First, the use of Titanium Gr2 and Gr5 countersunk screws
Titanium Countersunk screws are mostly used in places where the surface of the parts cannot be raised after installation. The parts to be fastened are thick and thin. The so-called thick, that is, the thickness of the parts to be fastened is larger than the head of the countersunk head screw. Thickness, after the screw is tightened, there is still a part of the screw thread that does not enter the threaded hole. In this case, the countersunk screws can certainly be tightened. There is usually also a case where the thickness of the fastened part is less than the height of the head of the countersunk head screw, which is common in mechanical equipment in sheet metal parts, such as the hinge of the case and the connection of the door and the case; the sheet metal of the device The connection of the cover to the device, etc.
Due to the small thickness of the part, the fastened sheet metal part, the screw through hole completely becomes a tapered hole. In this case, when the countersunk screw is tightened, the screw head is not a tapered surface pressed sheet metal part. Instead, the bottom of the screw head is crushed to the top of the threaded hole. Although the screw is felt to be tightened, the sheet metal piece is jammed instead of being pressed. In this case, although the screw is felt to be tightened, The gold pieces are indeed not tightened. This is a very common situation.
Second, the use of countersunk screws
1. The taper of the reaming should be 90°. To ensure the guarantee, it is better to be less than 90°, not more than 90 °. This is a key trick. 2. If the thickness of the sheet metal is less than the thickness of the head of the countersunk head screw, the screw of the smaller one can be replaced, or the hole can be reamed smaller or not, and the diameter of the bottom hole becomes larger, so that the part pressure is not tight. 3. If there are multiple countersunk screw holes on the part, it should be precise when machining. Once the drill collar is drilled, the assembly is difficult to see, but as long as the error is not large, it can be tightened, because if the diameter of the screw is not very tight when tightening Large (approximately no more than 8mm), when there is an error in the hole pitch, the screw head will be deformed due to the force when it is tightened or it will be tightened.
2 .The application of Titanium countersunk screws is very simple. Countersunk screws are generally installed on some surfaces that cannot be raised. Because there are many mechanical devices whose surfaces are sunken, these places look unsightly and not strong enough. Need to use countersunk screws. In addition to its fixed function, the countersunk head screw has a beautifying effect, which makes the surface of the machine look more flat. The method used for countersunk screws is similar to that used for other screws, except that countersunk screws are typically mounted inside and on the machine.