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''
2A28,51928,10326,16225,9824,199 2B24,63825,34926,21826,45628,575
7 UNC3A28,57528,15926,21726,08124,254 3B24,63825,08226,21826,39828,575
1.1/8''
2A25,52128,14126,45926,28424,742 2B25,14625,78126,51326,74128,575
8 UN3A28,57526,19426,51226,38124,795 3B25,14625,51926,51326,68228,575
1.1/8''
2A28,52928,2427,15527,00326,01 2B26,26926,74627,20127,39828,575
12 UNF3A28,57528,28627,227,08726,055 3B26,28926,53727,20127,3528,575
1.1/4''
2A31,69431,27829,33729,1527,374 2A27,81328,52429,39329,63631,75
7 UNC3A31,7531,33429,39229,25427,429 3B27,81328,25729,39329,57531,75
1.1/4''
2A31,69631,31629,63429,45727,917 2B28,32128,95629,68829,92131,75
8 UN3A31,7531,36929,68729,55327,97 3B28,32128,69429,68829,86231,75
1.1/4''
2A31,70431,41530,3330,17329,185 2B29,46429,92130,37630,57931,75
12 UNF3A31,7531,46130,37530,2629,23 3B29,46429,71230,37630,52831,75
1.3/8''
2A34,86434,40232,11331,91129,825 2B30,35331,11532,17532,43834,925
6 UNC3A34,92534,46332,17432,02229,886 3B30,35330,8532,17532,37234,925
1.3/8''
2A34,86934,48932,80632,62431,09 2B31,49632,13132,86333,09834,925
8 UN3A34,92534,54432,86232,72631,145 3B31,49631,86932,86333,0434,925
1.3/8''
2A34,87634,58833,50233,34332,357 2B32,63933,09633,55133,75934,925
12 UNF3A34,92534,63633,5533,43232,405 3B32,63932,88733,55133,70534,925
1.1/2''
2A38,03937,57735,28835,08333 2B33,52834,2935,3535,61538,1
6 UNC3A38,137,63835,34935,19533,061 3B33,52834,02535,3535,54938,1
1.1/2''
2A38,04437,66435,98135,79734,265 2B34,67135,30636,03836,27838,1
8 UN3A38,137,71936,03735,89834,32 3B34,67135,04436,03836,21738,1
1.1/2''
2A38,05137,76336,67736,51635,532 2B35,81436,27136,72636,93638,1
12 UNF3A38,137,81136,72536,60435,58 3B35,81436,06236,72636,85538,1
1.5/8''
2A41,21940,83939,15638,69637,551 2B37,84638,48139,21339,45841,275
8 UN3A41,27540,89439,21239,07137,607 3B37,84638,21939,21339,39541,275
1.3/4''
2A44,38143,86141,08140,85638,334 2B38,96439,82741,15141,44544,45
5 UNC3A44,4543,9341,1540,98138,403 3B38,96439,5641,15141,37144,45
1.3/4''
2A44,39144,01142,32942,13940,612 2B41,02141,65642,38842,53644,45
8 UN3A44,4544,06942,38742,24340,67 3B41,02141,39442,38842,57544,45
1.7/8''
2A47,56647,18645,50445,30943,787 2B44,19644,83145,56345,81647,625
8 UN3A47,62547,24445,56245,41843,845 3B44,19644,56945,56345,75345,625
2''
2A50,72650,16847,06146,8244,003 2B44,67945,59347,13547,44950,88
4 1/2 UNC3A50,850,24247,13446,95547,077 3B44,67945,36647,13547,37150,8
2''
2A50,74150,36148,67948,48146,962 2B47,37148,00648,73848,99450,8
8 UN3A50,850,41948,73748,59147,02 3B47,37147,74448,73848,9350,8
2.1/8''
2A53,91453,53451,85151,65150,122 2B50,54651,18151,91352,17153,975
8 UN3A53,97553,59451,91251,76350,195 3B50,54650,91951,91352,10853,975
2.1/4''
2A57,07656,51853,41153,16550,353 2B51,02951,94353,46553,80457,15
4 1/2 UNC3A57,1556,59253,48453,350,427 3B51,02951,71653,48553,72657,15
2.1/4''
2A57,08956,70955,02654,02654,824 2B53,72154,35655,08855,35157,15
8 UN3A57,1556,76955,06754,93653,37 3B53,72154,09455,08855,28557,15
2.3/8''
2A60,26459,88458,20157,99656,485 2B56,89657,53156,26358,52960,325
8 UN3A60,32559,94458,26258,11156,545 3B56,89657,26958,26358,46360,325
2.1/2''
2A63,42162,81759,29659,03355,86 2B56,61757,58159,37659,71763,5
4 UNC3A63,562,89659,37559,17755,938 3B56,61757,38859,37659,63163,5
2.1/2''
2A63,43963,05961,37661,16959,66 2B60,07160,70661,43861,70663,5
8 UN3A63,563,11961,43761,28359,72 3B60,07160,44461,43861,6463,5
2.5/8''
2A66,61166,23164,54964,34162,832 2B63,24663,88164,61364,88466,675
8 UN3A66,67566,29464,61264,45662,895 3B63,24663,61964,61364,81566,675
2.3/4''
2A69,76869,16565,64365,37862,207 2B62,96763,93165,72666,07369,85
4 UNC3A69,8569,24665,72565,52562,288 3B62,96763,73865,72665,98669,85
2.3/4''
2A69,78669,40667,72467,51466,007 2B66,42167,05667,78868,06169,85
8 UN3A69,8569,46967,78767,62856,07 3B66,42166,79467,78867,99369,85
2.7/8''
2A72,96172,58170,68669,18269,182 2B69,59670,23170,96371,24173,025
8 UN3A73,02572,64470,96270,80369,245 3B69,59669,96970,96371,1773,025
3''
2A76,11875,51571,99371,72268,557 2B69,31770,28172,07672,42876,2
4 UNC3A76,275,59672,07571,87268,638 3B69,31770,08872,07672,33976,2
3''
2A76,13375,75374,07173,85672,354 2B72,77173,40674,13874,41976,2
8 UN3A76,275,81974,13773,97572,42 3B72,77173,14474,13874,13876,2
3.1/4''
2A82,46681,86278,34178,06574,905 2B75,66776,63178,42678,78382,55
4 UNC3A82,5581,94678,42578,21774,988 3B75,66776,43878,42678,69482,55
3.1/4''
2A82,49382,10380,42180,20178,704 2B79,12179,75680,48880,77482,55
8 UN3A82,5582,16980,48780,32378,77 3B79,12179,49480,48880,70382,55
3.3/8''
2A85,65885,27883,59683,37381,879 2B82,29682,93183,66383,95285,725
8 UN3A85,72585,34483,66283,49581,945 3B82,29682,66983,66383,87885,725
3.1/2''
2A88,81688,21284,69184,41281,255 2B82,01782,98184,77685,13888,9
4 UNC3A88,988,29684,77584,56581,338 3B82,01782,78884,77685,04988,9
3.1/2''
2A88,83388,45386,77186,54885,054 2B85,57186,10686,83887,12988,9
8 UN3A66,988,51986,83786,6785,12 3B85,57185,84486,83887,05588,9
3.5/8''
2A92,00691,62689,94389,71888,227 2B86,64689,29190,01390,30792,075
8 UN3A92,07591,69490,01289,84386,295 3B88,64689,01990,01380,23392,075
3.3/4''
2A95,16394,5691,03890,75587,602 2B88,63789,33191,12691,12695,25
4UNC3A95,16394,5691,03890,91287,688 3B8836789,13891,12691,40195,25
3.3/4''
2A95,18194,80193,11892,89191,402 2B91,82192,45693,18893,48495,25
8 UN3A95,2594,86993,18793,01891,47 3B91,82192,19493,18893,41195,25
3.7/8''
2A96,35697,97696,29396,06394,577 2B94,99695,63196,36396,66298,425
8 UN3A96,42898,04496,36296,1994,645 3B94,99695,36996,36396,58898,425
4''
2A101,513100,9197,38897,10293,952 2B94,71795,681973,47697,848101,6
4 UNC3A101,6100,99697,47597,2694,038 3B94,71795,48897,47697,756101,6
4''
2A101,531101,15199,46899,23897,752 2B98,17198,80699,53899,839101,6
8 UN3A101,6101,21999,53799,36597,82 3B98,17198,54499,53899,763101,6