Release time：2020-01-16 18:44 Browse：
In various fields of machinery manufacturing, construction engineering, electronic equipment and even daily life, screws as the basic components of connection and fixing, its types and specifications are wide, of which lengthening screws because of its unique length advantages, play an indispensable role in specific occasions. The head design of the extension screw is diversified to meet the needs of different scenarios. This paper will deeply discuss the extension screws of different head types such as outer hexagonal, inner hexagonal, round head, flat head and their respective uses.
### Outer hexagonal extension screw
The outer hexagonal extension screw, as the name suggests, has a hexagonal head design, which allows it to be easily tightened or loosened by a tool such as a wrench or socket. Because of its easy operation and stable structure, the outer hexagonal extension screw is widely used in the equipment and scenes that need to be disassembled and replaced frequently.
** Construction Engineering ** : In the connection nodes of various steel structure buildings, the outer hexagonal extension screw plays a key role. They can withstand large tensile forces and shear forces to ensure the stability and safety of the building structure.
** Public domain facilities ** : Installation and maintenance of public facilities such as road guardrail, billboard, etc., also often choose outer hexagonal extension screws. These screws are easy to install and remove for easy daily maintenance and replacement.
** Automotive industry ** : In the automotive manufacturing industry, outer hexagonal extension screws are widely used in chassis, wheels and other parts that need to be frequently disassembled. They not only provide sufficient strength, but also simplify production and maintenance processes through standardized design.
** Household devices ** : In daily life, many furniture and household appliances can also see the figure of the outer hexagonal extension screw. The durability and ease of operation of these screws make them an excellent choice for home repair and installation.
### hex extension screws
Unlike the outer hex screws, the head of the hex extension screw is designed as six recessed hexagonal slots that need to be tightened and loosened using a dedicated hex wrench or wrench head. Although this design increases the complexity of the operation, it brings higher torque transmission capacity and better anti-slip performance.
** Electronic equipment ** : In mobile phones, computers and other electronic computer equipment, the space is compact and the precision requirements are high, the hexagonal extension screw has become the first choice for assembly because of its small head and excellent anti-demolition performance.
** Instrumentation ** : Precision instruments and some internal components of industrial equipment assembly, also need hexagonal extension screws to ensure the stability and reliability of the connection.
** Aerospace ** : In the installation of certain components requiring extremely high safety, hexagonal extension screws are widely used due to their excellent anti-demolition performance and stable connection effect.
### Round head extension screw
The head of the round head extension screw is designed to be round, which makes the screw more smooth when rotating and easy to load and unload. The wide application of round head screws benefits from their good adaptability and versatility.
** Woodworking products ** : In the process of making wooden furniture such as beds, tables, chairs, etc., the round head extension screw has become a common connector because of its easy rotation and fixing characteristics.
** Electrical manufacturing ** : In the manufacturing of TV, refrigerator, washing machine and other electrical equipment, round head extension screws are also widely used in the fixed and assembled equipment.
** Machinery manufacturing ** : In the field of machinery manufacturing such as automobiles, bicycles, motorcycles, round head extension screws also play an important role. Not only do they provide a stable connection, but they can also be used flexibly in small Spaces.
** Construction engineering ** : In construction engineering, round head extension screws are also commonly used for fixing doors and Windows, laying floors and other tasks, and their easy rotation characteristics make the installation process more efficient.
### Flat head extension screw
The head of the flat head extension screw is designed to be flat, which is suitable for those who have high aesthetic requirements for assembly or need the screw head to be flush with the fixed object.
** Furniture ** : In furniture manufacturing, flat head extension screws are often used to connect cabinets, drawers and other components to ensure a clean and unified appearance.
** Suitcase ** : In the manufacture of suitcases and other travel supplies, flat head extension screws are also favored for their non-prominent and stable connection effect.
** Home appliance maintenance ** : In the maintenance process of TV, computer and other home appliance equipment, flat head extension screws also play an important role, they can ensure that the appearance of the repaired equipment is not affected.
In summary, different types of extension screws such as outer hexagon, inner hexagon, round head and flat head have their own unique design characteristics and scope of application. When choosing the right extension screw, it is necessary to consider factors such as the specific use scenario, the required force and torque, and aesthetic requirements. Only the right screw type and specification can ensure the stability of the connection and the safety of the equipment.
# Lengthening screws # Lengthening bolts # Lengthening outer hex screws # Lengthening inner hex screws # fasteners
