UNC thread
[/juː-ɛn-siː/ or /juː ɛn siː θrɛd/]
nounpl: UNC threads
rosca UNC
1. Unified National Coarse thread; a standardized screw thread form used primarily in North America with a coarse pitch and wider spacing between threads compared to UNF threads
The bolt specification called for a 1/4-20 UNC thread, which is one of the most common sizes in industrial applications.
A especificação do parafuso exigia uma rosca UNC 1/4-20, que é um dos tamanhos mais comuns em aplicações industriais.
2. A metric-independent thread standard established by ANSI that defines thread pitch, angle, and other dimensional characteristics
UNC threads are widely used in automotive and machinery manufacturing throughout North America.
Roscas UNC são amplamente utilizadas na fabricação automotiva e de máquinas em toda a América do Norte.
UNC threads are the dominant thread standard in North America and are used extensively in American manufacturing, automotive, and aerospace industries. In Brazil and Portugal, metric threads (ISO) are more common due to metrication, but UNC threads remain important in industries working with American equipment, imports, or international standards. The abbreviation UNC (Unified National Coarse) is universally recognized among engineers and technicians regardless of language background.
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