safety nut


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Noun1.safety nut - supplementary nut that is screwed down on a primary nut to prevent it from loosening
nut - a small (usually square or hexagonal) metal block with internal screw thread to be fitted onto a bolt
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Suddenly, I'm a safety nut, which is interesting, because I'm more commonly accused of putting my dogs at risk (because I often walk with them off-leash on trails).
It soon became clear that this wouldn't be the case, however, because the person driving the train at that time of night is such a safety nut that he or she lays on that horn long enough to ensure that everyone in three counties hears it at every crossing.
This actuator is available with a variety of special options including motor rotation in any direction, strong motor, anti-squeeze protection, brake, safety nut and reed switch.
And if you're a safety nut, BMW say all Z4 models sold in the UK will have 16in get-you-home run-flat tyres, traction and dynamic stability control, anti-lock brakes and four airbags as standard.
In his best-selling autobiography, Iacocca, the president of the Chrysler Corporation characterizes himself as a "safety nut.' Lee Iacocca argues strongly for the use of seat belts and claims that during his years as an executive of the Ford Motor Company he was an innovator in the field of automobile safety.
Options include safety nut, mounting bracket and reed-switch for parallel and memory functions.
You don't need to be an obsessive safety nut to actually check the tread on your tyres, make sure that anti-freeze is in place and even splash out on a service.