Whitworth thread

[ˈwɪtwərθ θrɛd]
nounpl: Whitworth threads
rosca Whitworth
1. A screw thread standard developed by Sir Joseph Whitworth in 1841, characterized by a rounded thread profile with a 55-degree angle, used primarily in British engineering and machinery
The old machinery used Whitworth thread bolts that are now difficult to find in modern hardware stores.
A máquina antiga utilizava parafusos com rosca Whitworth que agora são difíceis de encontrar nas lojas de ferragens modernas.
2. A metric or imperial screw fastening system featuring a distinctive rounded crest and root, historically prevalent in British-made equipment
Engineers had to source specialized tools to work with Whitworth thread fittings during the restoration project.
Os engenheiros tiveram que obter ferramentas especializadas para trabalhar com conexões de rosca Whitworth durante o projeto de restauração.
Whitworth threads represent a significant piece of engineering history, particularly in British manufacturing and colonial industrial development. While largely superseded by metric and unified thread standards in most modern applications, Whitworth threads remain important in the restoration and maintenance of vintage British machinery, antique equipment, and historical vehicles. The standard is named after Sir Joseph Whitworth, a prominent 19th-century engineer, and maintains cultural significance in British engineering heritage.
Synonyms / Sinônimos
Whitworth screwBSW (British Standard Whitworth)rounded thread
Antonyms / Antônimos
metric threadUNC threadUNF thread

Regional Variations

General Brazilian
rosca Whitworth
Technical term used in engineering and machinery contexts
Rio de Janeiro
rosca Whitworth
Used in industrial and technical sectors
São Paulo
rosca Whitworth
Common in manufacturing and automotive repair industries
Portugal
rosca Whitworth
Used in technical documentation and engineering contexts, with historical significance in colonial equipment

Related Words

screw threadBSP (British Standard Pipe)thread pitchbolt standardfastenermetric threadISO metric thread

Related Idioms & Phrases

a Whitworth fit - a very precise mechanical fit
Whitworth standard - an older but still respected technical specification
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