Rosca Série Polegada – Sistema Unificado Americano

REFERÊNCIA ASME B1.1 - 2003
 

Diâmetro Nominal nº fios-série
Rosca Externa
  
Rosca Interna
Classe
Diâmetro Maior
Diâmetro Primitivo
Diâmetro Menor
  
Classe
Diâmetro Menor
Diâmetro Primitivo
Diâmetro Maior
 
máx.
min.
máx.
min.
máx.
  
min.
máx.
min.
máx.
min.
Nº 5
2A
3,154
3,026
2,743
2,678
2,398
  
2B
2,487
2,697
2,764
2,847
3,175
40 UNC
3A
3,175
3,046
2,763
2,716
2,418
  
3B
2,487
2,697
2,764
2,827
3,175
Nº 5
2A
3,157
3,036
2,781
2,781
2,469
  
2B
2,551
2,74
2,8
2,88
3,175
44 UNF
3A
3,175
3,054
2,799
2,751
2,487
  
3B
2,551
2,74
2,8
2,86
3,175
Nº 6
2A
3,484
3,333
2,969
2,899
2,54
  
2B
2,642
2,895
2,99
3,083
3,506
32 UNC
3A
3,505
3,353
2,989
2,937
2,56
  
3B
2,642
2,895
2,99
3,058
3,506
Nº 6
2A
3,484
3,356
3,073
3,008
2,728
  
2B
2,82
3,022
3,094
3,18
3,506
40 UNF
3A
3,505
3,376
3,093
3,043
2,748
  
3B
2,82
3,012
3,094
3,157
3,506
Nº 8
2A
4,142
3,991
3,627
3,554
3,198
  
2B
3,302
3,53
3,65
3,746
4,166
32 UNC
3A
4,165
4,014
3,649
3,595
3,221
  
3B
3,302
3,528
3,65
3,721
4,166
Nº 8
2A
4,145
4,006
3,688
3,617
3,305
  
2B
3,404
3,606
3,709
3,799
4,166
36 UNF
3A
4,165
4,026
3,708
3,656
3,325
  
3B
3,404
3,596
3,709
3,776
4,166
Nº 10
2A
4,8
4,618
4,112
4,029
3,541
  
2B
3,683
3,962
4,138
4,246
4,826
24 UNC
3A
4,826
4,644
4,137
4,075
3,566
  
3B
3,683
3,949
4,138
4,218
4,826
Nº 10
2A
4,803
4,651
4,287
4,212
3,858
  
2B
3,963
4,165
4,311
4,409
4,826
32 UNF
3A
4,826
4,674
4,31
4,252
3,881
  
3B
3,963
4,168
4,311
4,384
4,826
Nº 12
2A
5,461
5,279
4,772
4,687
4,201
  
2B
4,344
4,597
4,799
4,909
5,487
24 UNC
3A
5,486
5,304
4,798
4,733
4,227
  
3B
4,344
4,589
4,799
4,881
5,487
Nº 12
2A
5,461
5,296
4,871
4,791
4,379
  
2B
4,496
4,724
4,898
5,003
5,487
28 UNF
3A
5,486
5,322
4,897
4,837
4,404
  
3B
4,496
4,716
4,898
4,975
5,487
1/4"
2A
6,322
6,117
5,496
5,403
4,811
  
2B
4,979
5,257
5,55
5,648
6,35
20 UNC
3A
6,35
6,145
5,524
5,454
4,839
  
3B
4,979
5,25
5,525
5,615
6,35
1/4"
2A
6,324
6,16
5,735
5,652
5,243
  
2B
5,36
5,588
5,761
5,869
6,35
28 UNF
3A
6,35
6,185
5,76
5,698
5,268
  
3B
5,36
5,562
5,761
5,842
6,35
5/16"
2A
7,907
7,687
6,99
6,889
6,228
  
2B
6,401
6,731
7,021
7,155
7,938
18 UNC
3A
7,927
7,717
7,02
6,945
6,259
  
3B
6,401
6,68
7,021
7,119
7,938
5/16"
2A
7,909
7,727
7,221
7,128
6,65
  
2B
6,782
7,035
7,251
7,371
7,938
24 UNF
3A
7,937
7,755
7,249
7,181
6,678
  
3B
6,782
6,995
7,25
7,34
7,938
3/8"
2A
9,491
9,254
8,46
8,349
7,6
  
2B
7,798
8,153
8,494
8,638
9,525
16 UNC
3A
9,525
9,287
8,493
8,41
7,633
  
3B
7,798
8,082
8,494
8,602
9,525
3/8"
2A
9,497
9,315
8,808
8,713
8,223
  
2B
8,382
8,636
8,837
8,961
9,525
24 UNF
3A
9,525
9,343
8,836
8,763
8,265
  
3B
8,382
8,564
8,837
8,93
9,525
7/16"
2A
11,076
10,816
9,898
9,779
8,918
  
2B
9,144
9,55
9,934
10,088
11,113
14 UNC
3A
11,112
10,851
9,933
9,846
8,954
  
3B
9,144
9,441
9,934
10,05
11,113
7/16"
2A
11,079
10,874
10,254
10,147
9,568
  
2B
9,729
10,033
10,287
10,424
11,113
20 UNF
3A
11,112
10,907
10,287
10,208
9,601
  
3B
9,729
9,946
10,287
10,391
11,113
1/2"
2A
12,661
12,386
11,392
11,265
8,43
  
2B
10,592
11,023
11,43
11,595
12,7
13 UNC
3A
12,7
12,424
11,43
11,336
8,468
  
3B
10,592
10,881
11,43
11,551
12,7
1/2"
2A
12,666
12,462
11,841
11,732
11,156
  
2B
11,329
11,607
11,875
1,016
12,7
20 UNF
3A
12,7
12,495
11,874
11,793
11,189
  
3B
11,329
11,523
11,875
11,981
12,7
9/16"
2A
14,246
13,958
12,873
12,741
11,727
  
2B
11,989
12,446
12,914
13,086
14,288
12 UNC
3A
14,287
13,998
12,913
12,814
11,768
  
3B
11,989
12,301
12,914
13,042
14,288
9/16"
2A
14,251
14,031
13,335
13,221
12,573
  
2B
12,751
13,081
13,371
13,52
14,288
18 UNF
3A
14,287
14,067
13,37
13,285
12,609
  
3B
12,751
12,969
13,371
13,482
14,288
5/8"
2A
15,834
15,528
14,335
14,197
13,086
  
2B
13,386
13 ,868
14,377
14,559
15,875
11 UNC
3A
15,875
15,568
14,376
14,273
13,127
  
3B
13,386
13,693
14,377
14,513
15,875
5/8"
2A
15,839
15,619
14,922
14,804
14,161
  
2B
14,351
14,681
14,959
15,11
15,875
18 UNF
3A
15,875
15,655
14,958
14,87
14,196
  
3B
14,351
14,554
14,959
15,072
15,875
3/4"
2A
19,004
18,677
17,353
17,204
15,979
  
2B
16,307
16,84
17,399
17,594
19,05
10 UNC
3A
19,05
18,273
17,399
17,288
16,025
  
3B
16,307
16,624
17,399
17,543
19,05
3/4"
2A
19,011
18,774
17,98
17,854
17,12
  
2B
17,323
17,678
18,019
18,183
19,05
16 UNF
3A
19,05
18,812
18,018
17,923
17,158
  
3B
17,323
17,546
18,019
18,143
19,05
7/8"
2A
22,176
21,824
20,342
20,183
18,816
  
2B
19,177
19,761
20,392
20,599
22,225
9 UNC
3A
22,225
21,872
20,391
20,272
18,865
  
3B
19,177
19,509
20,392
20,546
22,225
7/8"
2A
22,184
21,923
21,005
20,869
20,025
  
2B
20,27
20,675
21,047
21,224
22,225
14 UNF
3A
22,225
21,964
21,046
20,943
20,066
  
3B
20,27
20,492
21,047
21,181
22,225
1 - 8 UNC
2A
25,349
24,969
23,286
23,114
21,57
  
2B
21,971
22,606
23,338
23,561
25,4
3A
25,4
25,019
23,337
23,208
21,62
  
3B
21,971
22,344
23,338
23,505
25,44
1 - 12 UNF
2A
25,254
25,065
23,98
23,831
22,835
  
2B
23,114
23,571
24,026
24,218
25,4
3A
25,4
25,111
24,025
23,915
22,88
  
3B
23,114
23,362
24,026
24,17
25,4

 

Diâmetro Nominal nº fios-série
Rosca Externa
  
Rosca Interna
Classe
Diâmetro Maior
Diâmetro Primitivo
Diâmetro Menor
  
Classe
Diâmetro Menor
Diâmetro Primitivo
Diâmetro Maior
 
máx.
min.
máx.
min.
máx.
  
min.
máx.
min.
máx.
min.
1.1/8''
 2A 28,519 28,103 26,162 25,98 24,199   2B 24,638 25,349 26,218 26,456 28,575
7 UNC 3A 28,575 28,159 26,217 26,081 24,254   3B 24,638 25,082 26,218 26,398 28,575
1.1/8''
 2A 25,521 28,141 26,459 26,284 24,742   2B 25,146 25,781 26,513 26,741 28,575
8 UN 3A 28,575 26,194 26,512 26,381 24,795   3B 25,146 25,519 26,513 26,682 28,575
1.1/8''
 2A 28,529 28,24 27,155 27,003 26,01   2B 26,269 26,746 27,201 27,398 28,575
12 UNF 3A 28,575 28,286 27,2 27,087 26,055   3B 26,289 26,537 27,201 27,35 28,575
1.1/4''
 2A 31,694 31,278 29,337 29,15 27,374   2A 27,813 28,524 29,393 29,636 31,75
7 UNC 3A 31,75 31,334 29,392 29,254 27,429   3B 27,813 28,257 29,393 29,575 31,75
1.1/4''
 2A 31,696 31,316 29,634 29,457 27,917   2B 28,321 28,956 29,688 29,921 31,75
8 UN 3A 31,75 31,369 29,687 29,553 27,97   3B 28,321 28,694 29,688 29,862 31,75
1.1/4''
 2A 31,704 31,415 30,33 30,173 29,185   2B 29,464 29,921 30,376 30,579 31,75
12 UNF 3A 31,75 31,461 30,375 30,26 29,23   3B 29,464 29,712 30,376 30,528 31,75
1.3/8''
 2A 34,864 34,402 32,113 31,911 29,825   2B 30,353 31,115 32,175 32,438 34,925
6 UNC 3A 34,925 34,463 32,174 32,022 29,886   3B 30,353 30,85 32,175 32,372 34,925
1.3/8''
 2A 34,869 34,489 32,806 32,624 31,09   2B 31,496 32,131 32,863 33,098 34,925
8 UN 3A 34,925 34,544 32,862 32,726 31,145   3B 31,496 31,869 32,863 33,04 34,925
1.3/8''
 2A 34,876 34,588 33,502 33,343 32,357   2B 32,639 33,096 33,551 33,759 34,925
12 UNF 3A 34,925 34,636 33,55 33,432 32,405   3B 32,639 32,887 33,551 33,705 34,925
1.1/2''
 2A 38,039 37,577 35,288 35,083 33   2B 33,528 34,29 35,35 35,615 38,1
6 UNC 3A 38,1 37,638 35,349 35,195 33,061   3B 33,528 34,025 35,35 35,549 38,1
1.1/2''
 2A 38,044 37,664 35,981 35,797 34,265   2B 34,671 35,306 36,038 36,278 38,1
8 UN 3A 38,1 37,719 36,037 35,898 34,32   3B 34,671 35,044 36,038 36,217 38,1
1.1/2''
 2A 38,051 37,763 36,677 36,516 35,532   2B 35,814 36,271 36,726 36,936 38,1
12 UNF 3A 38,1 37,811 36,725 36,604 35,58   3B 35,814 36,062 36,726 36,855 38,1
1.5/8''
 2A 41,219 40,839 39,156 38,696 37,551   2B 37,846 38,481 39,213 39,458 41,275
8 UN 3A 41,275 40,894 39,212 39,071 37,607   3B 37,846 38,219 39,213 39,395 41,275
1.3/4''
 2A 44,381 43,861 41,081 40,856 38,334   2B 38,964 39,827 41,151 41,445 44,45
5 UNC 3A 44,45 43,93 41,15 40,981 38,403   3B 38,964 39,56 41,151 41,371 44,45
1.3/4''
 2A 44,391 44,011 42,329 42,139 40,612   2B 41,021 41,656 42,388 42,536 44,45
8 UN 3A 44,45 44,069 42,387 42,243 40,67   3B 41,021 41,394 42,388 42,575 44,45
1.7/8''
 2A 47,566 47,186 45,504 45,309 43,787   2B 44,196 44,831 45,563 45,816 47,625
8 UN 3A 47,625 47,244 45,562 45,418 43,845   3B 44,196 44,569 45,563 45,753 45,625
2''
 2A 50,726 50,168 47,061 46,82 44,003   2B 44,679 45,593 47,135 47,449 50,88
4 1/2 UNC 3A 50,8 50,242 47,134 46,955 47,077   3B 44,679 45,366 47,135 47,371 50,8
2''
 2A 50,741 50,361 48,679 48,481 46,962   2B 47,371 48,006 48,738 48,994 50,8
8 UN 3A 50,8 50,419 48,737 48,591 47,02   3B 47,371 47,744 48,738 48,93 50,8
2.1/8''
 2A 53,914 53,534 51,851 51,651 50,122   2B 50,546 51,181 51,913 52,171 53,975
8 UN 3A 53,975 53,594 51,912 51,763 50,195   3B 50,546 50,919 51,913 52,108 53,975
2.1/4''
 2A 57,076 56,518 53,411 53,165 50,353   2B 51,029 51,943 53,465 53,804 57,15
4 1/2 UNC 3A 57,15 56,592 53,484 53,3 50,427   3B 51,029 51,716 53,485 53,726 57,15
2.1/4''
 2A 57,089 56,709 55,026 54,026 54,824   2B 53,721 54,356 55,088 55,351 57,15
8 UN 3A 57,15 56,769 55,067 54,936 53,37   3B 53,721 54,094 55,088 55,285 57,15
2.3/8''
 2A 60,264 59,884 58,201 57,996 56,485   2B 56,896 57,531 56,263 58,529 60,325
8 UN 3A 60,325 59,944 58,262 58,111 56,545   3B 56,896 57,269 58,263 58,463 60,325
2.1/2''
 2A 63,421 62,817 59,296 59,033 55,86   2B 56,617 57,581 59,376 59,717 63,5
4 UNC 3A 63,5 62,896 59,375 59,177 55,938   3B 56,617 57,388 59,376 59,631 63,5
2.1/2''
 2A 63,439 63,059 61,376 61,169 59,66   2B 60,071 60,706 61,438 61,706 63,5
8 UN 3A 63,5 63,119 61,437 61,283 59,72   3B 60,071 60,444 61,438 61,64 63,5
2.5/8''
 2A 66,611 66,231 64,549 64,341 62,832   2B 63,246 63,881 64,613 64,884 66,675
8 UN 3A 66,675 66,294 64,612 64,456 62,895   3B 63,246 63,619 64,613 64,815 66,675
2.3/4''
 2A 69,768 69,165 65,643 65,378 62,207   2B 62,967 63,931 65,726 66,073 69,85
4 UNC 3A 69,85 69,246 65,725 65,525 62,288   3B 62,967 63,738 65,726 65,986 69,85
2.3/4''
 2A 69,786 69,406 67,724 67,514 66,007   2B 66,421 67,056 67,788 68,061 69,85
8 UN 3A 69,85 69,469 67,787 67,628 56,07   3B 66,421 66,794 67,788 67,993 69,85
2.7/8''
 2A 72,961 72,581 70,686 69,182 69,182   2B 69,596 70,231 70,963 71,241 73,025
8 UN 3A 73,025 72,644 70,962 70,803 69,245   3B 69,596 69,969 70,963 71,17 73,025
3''
 2A 76,118 75,515 71,993 71,722 68,557   2B 69,317 70,281 72,076 72,428 76,2
4 UNC 3A 76,2 75,596 72,075 71,872 68,638   3B 69,317 70,088 72,076 72,339 76,2
3''
 2A 76,133 75,753 74,071 73,856 72,354   2B 72,771 73,406 74,138 74,419 76,2
8 UN 3A 76,2 75,819 74,137 73,975 72,42   3B 72,771 73,144 74,138 74,138 76,2
3.1/4''
 2A 82,466 81,862 78,341 78,065 74,905   2B 75,667 76,631 78,426 78,783 82,55
4 UNC 3A 82,55 81,946 78,425 78,217 74,988   3B 75,667 76,438 78,426 78,694 82,55
3.1/4''
 2A 82,493 82,103 80,421 80,201 78,704   2B 79,121 79,756 80,488 80,774 82,55
8 UN 3A 82,55 82,169 80,487 80,323 78,77   3B 79,121 79,494 80,488 80,703 82,55
3.3/8''
 2A 85,658 85,278 83,596 83,373 81,879   2B 82,296 82,931 83,663 83,952 85,725
8 UN 3A 85,725 85,344 83,662 83,495 81,945   3B 82,296 82,669 83,663 83,878 85,725
3.1/2''
 2A 88,816 88,212 84,691 84,412 81,255   2B 82,017 82,981 84,776 85,138 88,9
4 UNC 3A 88,9 88,296 84,775 84,565 81,338   3B 82,017 82,788 84,776 85,049 88,9
3.1/2''
 2A 88,833 88,453 86,771 86,548 85,054   2B 85,571 86,106 86,838 87,129 88,9
8 UN 3A 66,9 88,519 86,837 86,67 85,12   3B 85,571 85,844 86,838 87,055 88,9
3.5/8''
 2A 92,006 91,626 89,943 89,718 88,227   2B 86,646 89,291 90,013 90,307 92,075
8 UN 3A 92,075 91,694 90,012 89,843 86,295   3B 88,646 89,019 90,013 80,233 92,075
3.3/4''
 2A 95,163 94,56 91,038 90,755 87,602   2B 88,637 89,331 91,126 91,126 95,25
4UNC 3A 95,163 94,56 91,038 90,912 87,688   3B 88367 89,138 91,126 91,401 95,25
3.3/4''
 2A 95,181 94,801 93,118 92,891 91,402   2B 91,821 92,456 93,188 93,484 95,25
8 UN 3A 95,25 94,869 93,187 93,018 91,47   3B 91,821 92,194 93,188 93,411 95,25
3.7/8''
 2A 96,356 97,976 96,293 96,063 94,577   2B 94,996 95,631 96,363 96,662 98,425
8 UN 3A 96,428 98,044 96,362 96,19 94,645   3B 94,996 95,369 96,363 96,588 98,425
4''
 2A 101,513 100,91 97,388 97,102 93,952   2B 94,717 95,681 973,476 97,848 101,6
4 UNC 3A 101,6 100,996 97,475 97,26 94,038   3B 94,717 95,488 97,476 97,756 101,6
4''
 2A 101,531 101,151 99,468 99,238 97,752   2B 98,171 98,806 99,538 99,839 101,6
8 UN 3A 101,6 101,219 99,537 99,365 97,82   3B 98,171 98,544 99,538 99,763 101,6