porca de travamento
1. A nut with a built-in locking mechanism or special design that prevents it from loosening due to vibration or movement
The lock nut on the wheel axle ensures the bolt stays tight during driving.
A porca de travamento no eixo da roda garante que o parafuso permaneça apertado durante a condução.
2. A second nut tightened against another nut on the same bolt to prevent loosening
We used a lock nut to secure the threaded rod in place permanently.
Usamos uma porca de travamento para fixar permanentemente a haste roscada.
Lock nuts are essential in automotive, mechanical, and construction industries in both Brazil and the USA. In Brazilian industrial contexts, 'porca de travamento' is the standard technical term used in manuals and specifications. The concept is particularly important in tropical climates where vibration and corrosion are concerns, making proper fastening critical for vehicle maintenance and safety.
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