Standard: EN 14399-3

HSFG Bolts

LOADSTAR High Strength Friction Grip (HSFG) Bolts are precision-engineered structural fasteners designed for critical bolted connections in steel structures, bridges, and railway infrastructure. Unlike conventional bolts that rely on shear and bearing, HSFG bolts work by applying a controlled pre-tension that generates powerful clamping forces between the connected plates. This friction-based load transfer mechanism prevents joint slip, even under dynamic or cyclic loads, making them the preferred choice for safety-critical applications.

HSFG Bolts - View 1
HSFG Bolts - View 2

Technical Specifications

StandardEN 14399-3
Grades / Property Class8.8HR, 10.9HR
Size RangeM12 to M36

Key Features

High Tensile Strength
Controlled Mechanical Properties
Excellent Coating Performance
Suitable for Railway & Infrastructure Applications

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