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Device for fixing rails on railroad sleepers, has head whose large dimension extends in longitudinal direction in guide of metal profile and provides anti-rotation function with respect to metal profile
Device for fixing rails on railroad sleepers, has head whose large dimension extends in longitudinal direction in guide of metal profile and provides anti-rotation function with respect to metal profile
The device has a metal profile (3) arranged longitudinally in a prestressed concrete sleeper (1). An insert bolt (4) is guided in the metal profile, and is equipped with a screw (4') provided with a head (4'') i.e. broad head. A nut (4''') presses a saddle, a fastener and an insulator on a rail in a locking position. The metal profile is provided with a rectangular cross section. The large dimension of the head extends in longitudinal direction in a guide of the metal profile, and provides anti-rotation function with respect to the metal profile. The screw is made of half-hard or hard steel. The metal profile is made of soft type steel.
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