Parafuso Estojo / Prisioneiro / Tirante / Barra Rosqueada

REFERÊNCIA ASME B16.5 - 2009 e ASME B1.1

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Diâmetro Nominal Diâmetro Externo Diâmetro Primitivo
Classe 2A máx. min. máx. min.
1/4" - 20 UNC 6,322 6,117 5,496 5,403
5/16" - 18 UNC 7,907 7,687 6,99 6,889
3/8" - 16 UNC 9,491 9,254 8,46 8,349
7/16" - 14 UNC 11,076 10,816 9,898 9,779
1/2" - 13 UNC 12,661 12,386 11,392 11,265
9/16" - 12 UNC 14,246 13,958 12,873 12,741
5/8" - 11 UNC 15,834 15,528 14,335 14,197
3/4" - 10 UNC 19,004 18,677 17,353 17,204
7/8" - 9 UNC 22,176 21,824 20,342 20,183
1" - 8 UNC 25,349 24,969 23,286 23,114
1.1/8" - 8 UN 28,521 28,141 26,459 26,284
1.1/4" - 8 UN 31,696 31,316 29,634 29,457
1.3/8" - 8 UN 34,869 34,489 32,806 32,624
1.1/2" - 8 UN 38,044 37,664 35,981 35,797
1.5/8" - 8 UN 41,219 40,839 39,156 38,969
1.3/4" - 8 UN 44,391 44,011 42,329 42,139
1.7/8" - 8 UN 47,566 47,186 45,504 45,309
2" - 8 UN 50,741 50,361 48,679 48,481
2.1/4" - 8 UN 57,089 56,709 55,026 54,824
2.1/2" - 8 UN 63,439 63,059 61,376 61,169
2.3/4" - 8 UN 69,786 69,406 67,724 67,514
3" - 8 UN 76,133 75,753 74,071 73,856

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