Types of bolts and nuts

These types of bolts and nuts are the most common types used in industries. Hexagonal bolts have both a fully threaded axis and a half-threaded type and a hexagonal head, and hexagonal nuts have a hexagonal body and All the threads are inside them. Hex bolts and nuts are used in a wide range of applications, including construction, automobiles, and machinery. This type of screw has high strength and requires less force to rotate the nut. To work with this type of screw, tools such as a spanner or a French wrench are used, and to install it, the part in question must be pre-drilled.

This type of screw has a round, convex and smooth head and there is a square neck under it, which prevents it from twisting when tightening the screw. The nut used for this type of screw is hexagonal and the axis According to the application, they can be fully threaded or semi-threaded. These types of screws and nuts are widely used in wooden structures. To connect using this type of screw, it is necessary to have a hole in the part. p>

These types of screws are sometimes called lag screws. The axis of the lag screws is semi-threaded and their tips are sharp, which makes it easier to enter the work piece; But again, to use this screw, you have to drill the desired part. The head of this type of screw is hexagonal, and usually, due to their structure, there is no need to use a nut with them. These are large and heavy screws that are used for Fastening heavy objects on wood or other materials are used.

In this type of screws, the head part is generally circular with a hexagonal hole for placing a special wrench, and in its body there is a cylindrical comb without thread between the threaded axis and the head. The presence of this comb makes This type of screw should be used for very precise connection of parts. Usually, a simple hexagon nut and a circular flat washer are used with this type of screw.

T screws have a flat and rectangular head that is designed to fit in a T-shaped groove. Its axis is all cylindrical thread. These types of screws are generally used to fasten aluminum profiles. And it is used with a hexagonal nut or a T-shaped nut.

U-shaped screws have a body similar to the letter U, and their two end parts have threads. This type of screw is usually used to secure pipes, tubes and other cylindrical objects. To create strength in the intended structure. Usually, one or two hexagon nuts are used in each of the threaded parts.

These screws have a ring head that allows the connection of ropes, cables and other objects. Sometimes this ring is available completely closed and sometimes it has a narrow groove at the end. This type of screw generally has a cylindrical thread and its connection is strengthened by using a hexagon nut.

Master Bolt is one of the types of bolts and nuts used in various industries, which is headless and the whole body is the main axis of the bolt. This type of bolt is produced in various models, which are either fully threaded or a Its middle part is not threaded. In order to tighten the connection using Master Bolt, it is necessary to place two nuts on both sides of the desired pieces to press the pieces together. The main use of these types of bolts and nuts is flange connection. and are also used in other oil and gas industries, piping systems, etc.

These screws are used to fasten heavy equipment, machines and structures on concrete surfaces. The heads of these screws are made in a special form that is placed in the concrete and establishes a strong connection with it. The continuation of the body is a fully threaded cylindrical axis, which is closed with a hexagonal nut on the desired location. One of the main applications of this type of bolt and nut is to connect the column plate to concrete.

J-shaped bolts and nuts have a curved hook like the letter J at one end, which is designed to be embedded in concrete or other materials. The other end of this type of screw is a full thread that starts immediately after the J-shaped hook. A nut is used to fasten an object that is fastened on the threaded end of a screw, and it is tightened with a wrench or pliers. These types of bolts and nuts are usually used to fasten equipment, machines and Other objects are used on concrete foundations or other structures.

Automatic screws are one of the most widely used types of screws in the industry that do not require nuts. The body of this screw is fully threaded and its tip is conical so that it is possible to pierce the desired surface. The head of this screw may have different shapes, such as flat, convex, hexagonal or conical, and in all models, a hole with two grooves or four grooves is installed to close the screw using screwdrivers. The axis thread of this type of screws is It is a type of design that can attach itself to materials such as wood or plastic and create a very strong strength.

The drill head screw is another type of screw that can be used without the need for a nut. As its name suggests, this type of screw combines the functions of a drill and a screw at the same time. The head of this screw, like the automatic model, can be It can be made in any possible shape and should be opened and closed using a screwdriver or a wrench. The body of these screws is all threaded and their tip is designed similar to a drill, which allows them to to drill a hole while entering the desired piece and eliminate the need for pre-drilling. Drill head screws are usually used in construction, metal industry, and other applications where metal or composite materials are joined together. , is used.