What torque settings for accessory screws.

As a newish teacher I am trying to get students to fix things with the correct amount of torque.

Tightening brass screws like they are wheel nuts does not give materials much of a lifespan.

So I bought a couple of torque screwdrivers, so they can quickly get a feel for how tight things should be.

However now I look at data sheets I can't seem to find Torque info for anything smaller than a a miniature circuit breaker.

The data sheets now often include other everyday information like Altitude.

Does anyone have some guidance for smaller brass screw torques, or know of a manufacturer that publishes such data?

Parents
  • As a newish teacher I am trying to get students to fix things with the correct amount of torque.

    Tightening brass screws like they are wheel nuts does not give materials much of a lifespan.

    So I bought a couple of torque screwdrivers, so they can quickly get a feel for how tight things should be.

    However now I look at data sheets I can't seem to find Torque info for anything smaller than a a miniature circuit breaker.

    They are starting to appear on some accessory instructions, like socket-outlets and connection units - typically 0.5 to 1.5 Nm depending on the manufacturer. I seem to remember Schneider and Crabtree now quote them (e.g. on the decorative metal finish range they quote 0.5 Nm), but also more recently even some of the cheapest products from a rather popular outlet that also does mail order.

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  • As a newish teacher I am trying to get students to fix things with the correct amount of torque.

    Tightening brass screws like they are wheel nuts does not give materials much of a lifespan.

    So I bought a couple of torque screwdrivers, so they can quickly get a feel for how tight things should be.

    However now I look at data sheets I can't seem to find Torque info for anything smaller than a a miniature circuit breaker.

    They are starting to appear on some accessory instructions, like socket-outlets and connection units - typically 0.5 to 1.5 Nm depending on the manufacturer. I seem to remember Schneider and Crabtree now quote them (e.g. on the decorative metal finish range they quote 0.5 Nm), but also more recently even some of the cheapest products from a rather popular outlet that also does mail order.

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