Robert Friedrichs GmbH
Schrauben- und Werkzeugfabrik

– Founded 1930 –

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Square head screws with collar DIN 478

Clamping screws

Properties of our square-head screws with collar DIN 478

  • Standardised according to DIN 478
  • Square head with collar
  • Suitable for clamping plates, machine tables and fixtures
  • Precisely manufactured threads for optimum connection
  • Permanently dimensionally stable under tensile and compressive forces

Data sheets for download

Data sheet production class 8.8

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Our square head screws with collar to DIN 478 in strength class 8.8 are specially designed for secure and positive clamping in T-slots. The pronounced collar serves as a contact surface and ensures even force distribution – ideal for demanding applications in mechanical engineering, fixture construction and metalworking.

Advantages at a glance

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Secure and positive connection in T-slots

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Robust construction - strength class 8.8

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Even force distribution through collar

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Perfect for repeatable clamping systems

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Wide range with many size variants

Areas of application

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Mechanical engineering and toolmaking

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CNC clamping systems and fixture construction

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Clamping plates, T-slot tables and clamping devices

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Testing and assembly technology

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