What are high strength bolts and how do they differ from regular bolts?

Author: admin / 2023-04-14

High strength bolts are a type of fastener that are designed to withstand high loads and stresses. They are typically made from a special grade of steel, such as ASTM A325 or ASTM A490, and have a minimum tensile strength of 120 ksi (kilopounds per square inch).

The main difference between high strength bolts and regular bolts is their strength and performance characteristics. High strength bolts are designed to provide greater clamping force and resistance to shearing, bending, and other types of deformation under heavy loads. They are also typically larger in diameter and length than regular bolts, and have a different thread profile and pitch.

Another key difference is the installation process. High strength bolts are typically installed using a calibrated torque wrench or a hydraulic torque device, which ensures that the bolts are tightened to the correct tension. This is critical for ensuring that the bolts provide the required strength and performance under load. In contrast, regular bolts are often tightened using a simple wrench or socket, which can result in inconsistent tightening and reduced performance.

Overall, high strength bolts are an important component in many types of construction and engineering projects, particularly those that involve heavy loads and stresses. They are commonly used in applications such as bridge construction, high-rise buildings, and industrial equipment.

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