High Strength Friction Grip Bolts - Structural Bolt Manufacturer

What is HSFG Bolt

High-Strength Friction Grip Bolts, or HSFG bolts, are bolts engineered for exceptional strength. Their load-bearing capacity surpasses that of ordinary bolts of the same specifications. The term &#;friction grip&#; highlights a key distinction &#; these bolts rely on intentional pre-tensioning during tightening, generating significant frictional forces perpendicular to the screw direction. This friction, in turn, facilitates the transmission of shear forces during the connection process.

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Structural Variances of HSFG Bolt

While the general shape and connection structure of HSFG bolts mirror those of ordinary bolts, the primary distinction lies in their operational principles. Ordinary bolts transmit shear forces through the rod&#;s compression and shear resistance, with minimal consideration for the pre-tension generated during tightening. In contrast, HSFG bolts intentionally apply substantial pre-tension, creating compression forces between the connected surfaces. This compression results in significant friction forces, essential for transferring shear forces in the connection.

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