Types of screws
Machine screws: Yellow and bluish silver process is used to produce machine screws. In addition, the coating used for these screws is made of zinc. Machine screws are among full thread screws, and due to the use of zinc coating to produce these screws, they are usually used more in the electronic industry.
Metal screw >: These types of screws are usually used to connect metal sheets and different metals together. Of course, it is sometimes observed that metal screws are also used to connect fiberglass and plastic. People who intend to connect metal to wood, the best screws that can be used for this purpose are metal screws. The reason for this is the presence of small threads with a short distance on this type of screw. There are different types of metal screws in the market, among which we can refer to screws with washers and square screws.
Hexagonal screw:Hexagonal screw can be the most widely used type of screw. He introduced the existing one in the market, which has very high sales. In order to be able to open and close the hexagon screws, you must use a French wrench. The hexagonal screw is also available in the market in two models, half thread and full thread, and each user can choose and buy the right type according to their application. Usually, steel and galvanized coating are used to produce these screws. But in some models, we see that these covers are not used to produce the above screws.
Wood screw:Wood screw is one of the semi-threaded screws available in the market and it is used to connect wooden items. This screw is sold in two colors, silver and yellow. The coating used for wood screws is made of stainless steel or zinc.
Pointed screw: Pointed screw is actually a screw that looks very similar It is similar to a car screw and the only difference is that there is a notch in the head of these screws. Usually, tip screws are used in places where the purpose of tightening the screw is high torque. It doesn't need an initial hole to be used and it can open its own way. Steel metal with zinc coating is usually used to produce the screw with a drill tip. The part of the drill tip screw series has two modes: hexagon or washer.
Elevator screw: Elevator screws are used to connect surfaces that are plastic and soft. takes Among the applications of these screws, we can mention their use in conveyor belts. Elevator screws consist of a series with a large, flat diameter and a neck that has a square shape and is narrow. Of course, some elevator screw models have a triangular shape in the serial part. These screws usually lead to a reduction in vibration.
Head screw: The head screw is used to secure different surfaces. Nut screws have various models, among which we can refer to the pointed model, khor and Allen screwdriver. These pages have a depression in their serial part, and in order to be able to open and close these screws, you must use a special wrench.
Leg screw: Screws look like wood. But their head part is hexagonal or quadrangular and their ends are conically threaded. The above screws are usually used when a high torque is needed to tighten the screw.
Types of beads
Square nut: Because square nuts have a large seating surface, if you use a wrench to connect them, you can connect these nuts to the desired surface without vibration. The presence of a large seat surface has increased the friction of these screws. As a result, if you use this product to make your connections, your connections will have higher resistance.
Hexagon nut: Hexagon nuts are better than square nuts. They have a higher percentage of loosening. But due to having two more corners, the wear percentage of their surface is less compared to square nuts, which is one of the advantages of these nuts. Among the other advantages of hexagonal nuts, it can be mentioned that in order to rotate square nuts, one must rotate the nut at a 90 degree angle. But for the rotation of the hexagonal nuts, rotation with an angle of 60 degrees will be enough.
Narrow hexagonal nut:The above nuts are used in places where the thread length is short. In addition, when we need more than one nut to connect to the desired surface, we use narrow hexagonal nuts.
Heavy hexagon nut:Heavy hexagon nut is usually used for screws whose diameter is more than 40 mm. In addition, the screws that are affected by high force usually use heavy hexagonal nuts. and has been marketed. The above beads have very small dimensions, and these beads can be counted among the smallest square and hexagonal beads in the market.
A locking bead with a nylon ring:< /b> In this type of beads, a ring made of nylon is used to produce one side of the bead threads, which is smaller than the size of the screw. In fact, the presence of this ring makes it difficult to move the screw, and its function can be compared to glue. The connections made using these nuts are very resistant. Since nylon polymers are used to produce these beads, they cannot be used in places with high temperatures.
Eye nut: Eye nuts are actually a series of threaded rings that are usually used in heavy objects when they need to be moved by cranes and other machines. There are tools, the work of moving can be done more easily.
Closed nut:Closed nuts have a dome-like surface in their end part. These nuts are connected to the end part of threaded screws and rods with a good fit and prevent them from hitting body parts or other objects. Of course, closed nuts with long series are also available in the market, which covers more thread surface. The nut works and plastic or metal is used to produce it. The main function of the washer is to distribute the load of bolts and nuts, and this work leads to the prevention of deformation of the work piece. Nuts with washers are nuts that have a wide plate on one side, and when the number of connections is high, their use leads to an increase in assembly speed. In principle, nuts with washers lead to the prevention of the washer being left in sensitive places, especially in the dark parts of the part. Grooved nuts: Grooved nuts are nuts that On one side of them, there are a number of grooves for the pin to pass through. Basically, the above pins lead to increase the resistance of the connection against impact and vibration. Installing or removing grooved nuts is easier than other locking nuts.
To buy all kinds of bolts and nuts, you can visit the website Arvand Pars Sanat Sazan Company at the following address: