smooth washer
[/smuːð ˈwɒʃər/]
nounpl: smooth washers
arruela lisa
1. A flat, ring-shaped metal fastener with a smooth, ungrooved surface used to distribute the load of a fastener and prevent surface damage
Use a smooth washer under the bolt head to protect the wood surface.
Use uma arruela lisa sob a cabeça do parafuso para proteger a superfície da madeira.
2. A hardware component that provides uniform pressure distribution in mechanical assemblies
The smooth washer ensures even pressure distribution across the joint.
A arruela lisa garante distribuição uniforme de pressão na junção.
This is primarily technical/industrial terminology used by contractors, mechanics, and engineers in both Brazil and the United States. In Brazil, the term 'arruela lisa' is the standard in construction and automotive contexts. The term is gender-neutral and is part of standardized hardware nomenclature across Portuguese and English-speaking countries.
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