1. Structure: A strut that can be adjusted in length, usually consisting of two threaded rods, two adapter rings and an intermediate adjuster. The two ends of the threaded rod are respectively connected with components that need to be adjusted in length, and the adjuster in the middle can allow the threaded rod to rotate relative to each other, thereby changing the length of the entire two coils to achieve adjustment and control. 2. Purpose: Usually used in applications that require frequent length adjustments, such as ships, bridges, building structures, etc. They can be used to increase or decrease the tension of the entire structure by rotating the threaded rod so that it remains within the proper tension range. It can also be used to connect various components, such as wire ropes, chains, hooks, etc. 3. Precautions for use: 3.1) Select the appropriate material: The material of the turnbuckle bolt is usually carbon steel or alloy steel. When using it, it is necessary to select the appropriate material according to the specific situation to ensure that it meets the expected strength and corrosion resistance requirements. 3.2) Confirm the size and specification: When purchasing turnbuckle, you need to select the appropriate size and specification according to actual needs to ensure that they are used in conjunction with other fasteners or parts. 3.3) Avoid over-tightening during installation: Turnbuckle need to be correctly adjusted to torque during installation to avoid over-tightening, otherwise it may cause problems such as thread damage or bolt breakage. 3.4) Regular inspection and maintenance: Turnbuckle bolts may be affected by vibration, shock or corrosion during use, and require regular inspection and maintenance to ensure their safety and reliability. 3.5) Avoid mixing: the size and specification of turnbuckle need to be matched with other fasteners or parts, and avoid mixing bolts of different sizes or specifications, otherwise it may lead to safety accidents.