High Strength Friction Grip Bolts - Structural Bolt Manufacturer

What is HSFG Bolt

High-Strength Friction Grip Bolts, commonly known as HSFG bolts, are specifically designed to deliver outstanding strength. Their capability to bear loads significantly exceeds that of typical bolts even when considering the same specifications. The term 'friction grip' underscores an important characteristic; these bolts depend on intentional pre-tensioning during the tightening process, which creates considerable frictional forces that act perpendicular to the screw direction. This friction is crucial for effectively transmitting shear forces throughout the connection.

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Structural Variances of HSFG Bolt

HSFG bolts, while resembling standard bolts in shape and connection structure, differ mainly in their functioning principles. Whereas conventional bolts transmit shear forces through the rod's compression and shear resistance, paying little regard to the pre-tension developed during tightening, HSFG bolts deliberately exert high levels of pre-tension. This technique results in the creation of compressive forces between the surfaces that are being joined. The outcome is significant frictional forces, which are vital for the effective transmission of shear forces within the connection.

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