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B.S. 951 Bonding Clamp.

Zoomup
Good morning,

                           I have often wondered at just what is the purpose of the locking nut on the main fixing screw on a B.S. 951 bonding clamp. On static non vibrating pipes I can hardly imagine the screw becoming loose. So, is the locking nut superfluous? Or is it perhaps to allow correct orientation of the razor blade sharp warning label?


Z.

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    i always thought the lock nut was tightened sufficiently so that it would not be possible to unscrew the bolt with just a screwdriver, it would require two tools.  Mechanically reinforcing the "do not remove" message. It backfires a bit since if you only have a screwdriver, you just disconnect the terminations leaving the wires dangling, as seen around a meter in a recent thread. It should be able to be lockable at both connections, or at least a different screw head on the terminal screw.


    Edit; just found BS951 online, the lock nut is there solely to maintain the tightness of the screwed connection, it gives maximum torque values for various sizes of screws, which the lock nut maintains. Nothing to do with two tools, oh well.
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    i always thought the lock nut was tightened sufficiently so that it would not be possible to unscrew the bolt with just a screwdriver, it would require two tools.  Mechanically reinforcing the "do not remove" message. It backfires a bit since if you only have a screwdriver, you just disconnect the terminations leaving the wires dangling, as seen around a meter in a recent thread. It should be able to be lockable at both connections, or at least a different screw head on the terminal screw.


    Edit; just found BS951 online, the lock nut is there solely to maintain the tightness of the screwed connection, it gives maximum torque values for various sizes of screws, which the lock nut maintains. Nothing to do with two tools, oh well.
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