ÁREAS DE SEÇÃO DE TENSÃO – PARAFUSOS E PORCAS
|
ROSCA
UNC |
ROSCA
UNF |
ROSCA
8UN |
ROSCA
MÉTRICA |
||||
|
Diâmetro Nominal – F.P.P |
Área pol |
Diâmetro Nominal – F.P.P |
Área pol |
Diâmetro Nominal – F.P.P |
Área pol |
Diâmetro Nominal – Passo |
Área mm |
|
1/4″
– 20 |
0,0318
|
1/4″
– 28 |
0,0364
|
—-
|
—-
|
M3
– 0,5 |
5,03
|
|
5/16″
– 18 |
0,0524
|
5/16″
– 24 |
0,0580
|
—-
|
—-
|
M3,5
– 0,6 |
6,78
|
|
3/8″
– 16 |
0,0775
|
3/8″
– 24 |
0,0878
|
—-
|
—-
|
M4
– 0,7 |
8,78
|
|
7/16″
– 14 |
0,1063
|
7/16″-
20 |
0,1187
|
—-
|
—-
|
M5
– 0,8 |
14,2
|
|
1/2″
– 13 |
0,1419
|
1/2″
– 20 |
0,1599
|
—-
|
—-
|
M6
– 1 |
20,1
|
|
9/16″
– 12 |
0,182
|
9/16″
– 18 |
0,203
|
—-
|
—-
|
M7
– 1 |
28,9
|
|
5/8″
– 11 |
0,226
|
5/8″
– 18 |
0,256
|
—-
|
—-
|
M8
– 1,25 |
36,6
|
|
3/4″
– 10 |
0,334
|
3/4″
– 16 |
0,373
|
—-
|
—-
|
M10
– 1,5 |
58,0
|
|
7/8″
– 9 |
0,462
|
7/8″
– 14 |
0,509
|
—-
|
—-
|
M12
– 1,75 |
84,3
|
|
1″
– 8 |
0,606
|
1″
– 12 |
0,663
|
1″
– 8 |
0,606
|
M14
– 2 |
115
|
|
1.1/8″
– 7 |
0,763
|
1.1/8′
– 12 |
0,856
|
1.1/8″
– 8 |
0,790
|
M16
– 2 |
157
|
|
1.1/4″
– 7 |
0,969
|
1.1/4″
– 12 |
1,073
|
1.1/4″
– 8 |
1,000
|
M18
– 2,5 |
192
|
|
1.3/8″
– 6 |
1,155
|
1.3/8″
– 12 |
1,315
|
1.3/8″
– 8 |
1,233
|
M20
– 2,5 |
245
|
|
1.1/2″
– 6 |
1,405
|
1.1/2″
– 12 |
1,581
|
1.1/2′
– 8 |
1,492
|
M22
– 2,5 |
303
|
|
1.3/4″
– 5 |
1,90
|
—-
|
—-
|
1.3/4″
– 8 |
2,08
|
M24
– 3 |
353
|
|
2″
– 41/2 |
2,50
|
—-
|
—-
|
2″
– 8 |
2,77
|
M27
– 3 |
459
|
|
2.1/4″
– 41/2 |
3,25
|
—-
|
—-
|
1.1/4″
– 8 |
3,56
|
M30
– 3,5 |
561
|
|
2.1/2″
– 4 |
4,00
|
—-
|
—-
|
2.1/2″
– 8 |
4,44
|
M33
– 3,5 |
694
|
|
2.3/4″
– 4 |
4,93
|
—-
|
—-
|
2.3/4″
– 8 |
5,43
|
M36
– 4 |
817
|
|
3″
– 4 |
5,97
|
—-
|
—-
|
3″
– 8 |
6,51
|
M39
– 4 |
976
|
|
3.1/4″
– 4 |
7,10
|
—-
|
—-
|
3.1/4″
– 8 |
7,69
|
—-
|
—-
|
|
3.1/2″
– 4 |
8,33
|
—-
|
—-
|
3.1/2″
– 8 |
8,96
|
—-
|
—-
|
|
3.3/4″
– 4 |
9,66
|
—-
|
—-
|
3.3/4″
– 8 |
10,34
|
—-
|
—-
|
|
4″
– 4 |
11,08
|
—-
|
—-
|
4″
– 8 |
11,81
|
—-
|
—-
|
|
Tabela
de Conversão de Unidades |
|||
|
Ksi
– Kgf/mm |
x0,7030695
|
Lbf
– Kgf |
x0,453559
|
|
MPa
– Kgf/mm |
div.
9,,80665 |
N
– Kgf |
x0,1020
|
|
Ksi
– Mpa |
x6,897
|
Ksi
– Psi |
x1000
|
|
J
– Kgf.m |
div.
9,80665 |
Polegada
– milimetro |
x25,4
|
Parafuso Sextavado ASTM A320
REFERÊNCIA
ASME B18.2.1 – 1996
(Tabelas 3 e 6)
|
Diâmetro Nominal
|
E
|
F
|
G
|
H
|
R
|
LTL<ou=6″ L>6″
|
Y
|
||||||
|
máx.
|
min.
|
máx.
|
min.
|
máx.
|
min.
|
máx.
|
min
|
máx.
|
min.
|
Básico
|
Básico
|
máx.
|
|
|
1/2″
|
13,081
|
12,242
|
22,225
|
21,590
|
25,654
|
24,612
|
8,204
|
7,670
|
0,762
|
0,254
|
31,750
|
38,100
|
9,779
|
|
5/8″
|
16,306
|
15,367
|
26,974
|
26,187
|
31,165
|
29,845
|
10,236
|
9,601
|
1,524
|
0,508
|
38,100
|
44,450
|
11,557
|
|
3/4″
|
19,507
|
18,516
|
31,750
|
30,784
|
36,652
|
35,128
|
12,268
|
11,557
|
1,524
|
0,508
|
44,450
|
50,800
|
12,700
|
|
7/8″
|
22,733
|
21,64
|
36,525
|
35,407
|
42,164
|
40,360
|
14,300
|
13,487
|
1,524
|
0,508
|
50,800
|
57,150
|
14,122
|
|
1″
|
25,958
|
24,79
|
41,275
|
40,005
|
47,650
|
45,618
|
15,925
|
15,011
|
2,286
|
0,762
|
57,150
|
63,500
|
15,875
|
|
1.1/8″
|
29,184
|
27,889
|
46,024
|
44,602
|
53,162
|
50,850
|
18,237
|
16,713
|
2,286
|
0,762
|
63,500
|
69,850
|
18,135
|
|
1.1/4″
|
32,435
|
31,064
|
50,800
|
49,225
|
58,648
|
56,108
|
20,650
|
19,024
|
2,286
|
0,762
|
69,850
|
76,200
|
18,135
|
|
1.3/8″
|
35,661
|
34,163
|
55,575
|
53,822
|
64,160
|
61,366
|
22,301
|
20,574
|
2,286
|
0,762
|
76,200
|
82,550
|
21,158
|
|
1.1/2″
|
38,887
|
37,338
|
60,325
|
58,420
|
69,646
|
66,598
|
24,739
|
22,910
|
2,286
|
0,762
|
82,550
|
88,900
|
21,158
|
|
1.3/4″
|
45,339
|
43,586
|
69,850
|
67,614
|
80,645
|
77,089
|
28,803
|
26,771
|
3,048
|
1,016
|
95,250
|
101,600
|
25,400
|
|
2″
|
51,790
|
49,885
|
79,375
|
76,835
|
91,643
|
87,604
|
32,080
|
29,845
|
3,048
|
1,016
|
107,950
|
114,300
|
28,219
|
|
2.1/4″
|
58,547
|
56,235
|
88,900
|
86,055
|
102,641
|
98,094
|
36,144
|
33,705
|
4,826
|
1,524
|
120,650
|
127,000
|
28,219
|
|
2.1/2″
|
64,998
|
62,509
|
98,425
|
95,250
|
113,639
|
108,585
|
40,208
|
37,566
|
4,826
|
1,524
|
133,350
|
139,700
|
31,750
|
|
2.3/4″
|
71,805
|
68,859
|
107,950
|
104,444
|
124,637
|
119,075
|
44,297
|
41,452
|
4,826
|
1,524
|
146,050
|
152,400
|
31,750
|
|
3″
|
78,257
|
75,209
|
117,475
|
113,665
|
135,636
|
129,590
|
49,149
|
46,101
|
4,826
|
1,524
|
158,750
|
165,100
|
31,750
|
TOLERÂNCIA PARA COMPRIMENTOS “L”
|
Diâmetro
Nominal |
|
Comprimento
Nominal |
1/4″
a 3/8″ |
7/16″
e 1/2″ |
9/16″a
3/4″ |
7/8″
e 1″ |
1.1/8″
a 1.1/2″ |
Acima
de 1.1/2″ |
|
Até
1″ |
-0,762
|
-0,762
|
-0,762
|
———
|
———
|
———
|
|
Acima
de 1″ até 2.1/2″ |
-1,016
|
-1,524
|
-2,032
|
-2,540
|
-3,048
|
-4,572
|
|
Acima
de 2″.1/2″ até 4″ |
-1,524
|
-2,032
|
-2,540
|
-3,556
|
-4,064
|
-5,080
|
|
Acima
de 4″ até 6″ |
-2,540 |
-2,540
|
-2,540
|
-4,064
|
-4,572
|
-5,588
|
|
Acima
de 6″ |
-4,572 |
-4,572
|
-4,572
|
-5,08
|
-5,588
|
-6,096
|
NOTAS: 1-) Espessura da Arruela sob a cabeça: para DN 3/4″ e menores = 0,381 a 0,635
mm e para DN maiores que 3/4″=0,381 a 0,889.
PARAFUSO SEXTVADO ASTM A490
REFERÊNCIA
ASME B18.2.6 – 2010
|
Diâmetro
|
E
|
F
|
G
|
H
|
R
|
LT
|
Y
|
|||||
|
Nominal
|
máx.
|
min.
|
máx.
|
min.
|
máx.
|
min.
|
máx.
|
min.
|
máx.
|
min.
|
básico
|
máx.
|
|
1/2″
|
13,081
|
12,242
|
22,225
|
21,590
|
25,654
|
24,612
|
8,204
|
7,670
|
0,787
|
0,228
|
25,400
|
4,826
|
|
5/8″
|
16,306
|
15,367
|
26,974
|
26,187
|
31,165
|
29,845
|
10,236
|
9,601
|
1,574
|
0,533
|
31,750
|
5,588
|
|
3/4″
|
19,507
|
18,516
|
31,750
|
30,784
|
36,652
|
35,128
|
12,268
|
11,557
|
1,574
|
0,533
|
35,052
|
6,350
|
|
7/8″
|
22,733
|
21,640
|
36,525
|
35,407
|
42,164
|
40,360
|
14,300
|
13,487
|
1,574
|
0,787
|
38,100
|
7,112
|
|
1″
|
25,958
|
24,790
|
41,275
|
40,005
|
47,650
|
45,618
|
15,925
|
15,011
|
2,362
|
1,574
|
44,450
|
7,874
|
|
1.1/8″
|
29,184
|
27,889
|
46,024
|
44,602
|
53,162
|
50,850
|
18,237
|
16,713
|
2,362
|
1,574
|
50,800
|
8,636
|
|
1.1/4″
|
32,435
|
31,064
|
50,800
|
49,225
|
58,648
|
56,108
|
20,650
|
19,024
|
2,362
|
1,574
|
50,800
|
9,652
|
|
1.3/8″
|
35,661
|
34,163
|
55,575
|
53,822
|
64,160
|
61,366
|
22,301
|
20,574
|
2,362
|
1,574
|
57,150
|
11,176
|
|
1.1/2″
|
38,887
|
37,338
|
60,325
|
58,420
|
69,646
|
66,598
|
24,739
|
22,910
|
2,362
|
1,574
|
57,150
|
11,176
|
TOLERÂNCIA PARA COMPRIMENTOS “L”
|
Comprimento
|
Diâmetro
Nominal |
|||
|
Nominal “L” |
1/2″
|
5/8″
|
3/4″
a 1″ |
1.1/8″
a 1.1/2″ |
|
Até
6″ |
-3,048
|
-3,048
|
-4,826
|
-6,350
|
|
Acima
de 6″ |
-4,826
|
-6,350
|
-6,350
|
-6,350
|
NOTAS: 1-) Espessura da Arruela sob a cabeça: para DN 3/4″ e menores = 0,381 a 0,635mm e para DN maiores que 3/4″=0,381 a 0,889mm.
2-) Roscas: quando não especificado, usar: – UNC – 2A, para todos os diâmetros
PORCAS SEXTAVADAS – SÉRIE MÉTRICA
|
Diâmetro Nominal |
s
|
e
|
m
|
||
|
“d”
|
máx.
|
min.
|
min.
|
máx.
|
min.
|
|
M-3
|
5,50
|
5,32
|
6,01
|
2,40
|
2,15
|
|
M-4
|
7,00
|
6,78
|
7,66
|
3,20
|
2,90
|
|
M-5
|
8,00
|
7,78
|
8,79
|
4,00
|
3,70
|
|
M-6
|
10,00
|
9,78
|
11,05
|
5,00
|
4,70
|
|
M-7
|
11,00
|
10,73
|
12,12
|
5,50
|
5,20
|
|
M-8
|
13,00
|
12,73
|
14,38
|
6,50
|
6,14
|
|
M-10
|
17,00
|
16,73
|
18,90
|
8,00
|
7,64
|
|
M-12
|
19,00
|
18,67
|
21,10
|
10,00
|
9,64
|
|
M-14
|
22,00
|
21,67
|
24,49
|
11,00
|
10,30
|
|
M-16
|
24,00
|
23,67
|
26,75
|
13,00
|
12,30
|
|
M-18
|
27,00
|
26,16
|
29,56
|
15,00
|
14,30
|
|
M-20
|
30,00
|
29,16
|
32,95
|
16,00
|
14,90
|
|
M-22
|
32,00
|
31,00
|
35,03
|
18,00
|
16,90
|
|
M-24
|
36,00
|
35,00
|
39,55
|
19,00
|
17,70
|
|
M-27
|
41,00
|
40,00
|
45,20
|
22,00
|
20,70
|
|
M-30
|
46,00
|
45,00
|
50,85
|
24,00
|
22,70
|
|
M-33
|
50,00
|
49,00
|
55,37
|
26,00
|
24,70
|
|
M-36
|
55,00
|
53,80
|
60,79
|
29,00
|
27,40
|
|
M-39
|
60,00
|
58,80
|
66,44
|
31,00
|
29,40
|
|
M-42
|
65,00
|
63,10
|
71,30
|
34,00
|
32,40
|
|
M-45
|
70,00
|
68,10
|
76,95
|
36,00
|
34,40
|
|
M-48
|
75,00
|
73,10
|
82,60
|
38,00
|
36,40
|
|
M-50
|
80,00
|
78,10
|
88,25
|
42,00
|
40,40
|
|
M-56
|
85,00
|
8220
|
93,56
|
45,00
|
43,40
|
PORCAS QUADRADAS: NORMAL / LEVE / REGULAR
REFERÊNCIA
ASME / ANSI B18.2.2 – 1987
(Tabela 1)
|
Diâmetro
|
F
|
G
|
H
|
|||
|
Nominal
|
máx.
|
min.
|
máx.
|
min.
|
máx.
|
min.
|
|
1/4″
|
11,125
|
10,795
|
15,722
|
14,833
|
5,969
|
5,156
|
|
5/16″
|
14,274
|
13,893
|
20,193
|
19,075
|
7,188
|
6,324
|
|
3/8″
|
15,875
|
15,392
|
22,453
|
21,132
|
8,788
|
7,874
|
|
7/16″
|
19,050
|
18,491
|
26,949
|
25,400
|
10,007
|
9,042
|
|
1/2″
|
20,624
|
20,015
|
29,184
|
27,482
|
11,633
|
10,617
|
|
5/8″
|
25,400
|
24,612
|
35,915
|
33,782
|
14,452
|
13,335
|
|
3/4″
|
28,575
|
27,635
|
40,411
|
37,947
|
17,272
|
16,052
|
|
7/8″
|
33,324
|
32,232
|
47,142
|
44,246
|
20,116
|
18,796
|
|
1″
|
38,100
|
36,830
|
53,873
|
50,571
|
22,936
|
21,513
|
|
1.1/8″
|
42,875
|
41,427
|
60,604
|
56,870
|
26,162
|
24,638
|
|
1.1/4″
|
47,625
|
46,024
|
67,360
|
63,220
|
28,600
|
26,974
|
|
1.3/8″
|
52,374
|
50,647
|
74,091
|
69,545
|
31,419
|
29,692
|
|
1.1/2″
|
57,150
|
55,245
|
80,822
|
75,844
|
34,239
|
32,410
|
OBS: ROSCAS: Especificar – UNC/UNF/8UN/BSW/BSF
PORCA E CONTRA-PORCA SEXTAVADA: NORMAL / LEVE / REGULAR
REFERÊNCIA
ASME / ANSI B18.2.2 – 1987
(Tabela 3)
|
Diâmetro
|
F
|
G
|
H
|
H1
|
||||
|
Nominal
|
máx.
|
min.
|
máx.
|
min.
|
máx.
|
min.
|
máx.
|
min.
|
|
1/4″
|
11,125
|
10,871
|
12,827
|
12,395
|
5,740
|
5,384
|
4,140
|
3,810
|
|
5/16″
|
12,700
|
12,420
|
14,655
|
14,147
|
6,934
|
6,553
|
4,953
|
4,572
|
|
3/8″
|
14,274
|
13,995
|
16,510
|
15,951
|
8,559
|
8,128
|
5,765
|
5,334
|
|
7/16″
|
17,475
|
17,145
|
20,167
|
19,507
|
9,779
|
9,271
|
6,604
|
6,096
|
|
1/2″
|
19,050
|
18,694
|
21,996
|
21,336
|
11,379
|
10,845
|
8,204
|
7,670
|
|
9/16″
|
22,225
|
21,869
|
25,654
|
24,942
|
12,598
|
12,014
|
8,229
|
7,645
|
|
5/8″
|
23,825
|
23,418
|
27,508
|
26,695
|
14,198
|
13,589
|
9,829
|
9,220
|
|
3/4″
|
28,575
|
27,635
|
32,994
|
31,496
|
16,891
|
15,671
|
11,328
|
10,109
|
|
7/8″
|
33,324
|
32,232
|
38,506
|
36,753
|
19,710
|
18,389
|
12,954
|
11,633
|
|
1″
|
38,100
|
36,830
|
43,992
|
41,986
|
22,529
|
21,107
|
14,605
|
13,182
|
|
1.1/8″
|
42,875
|
41,427
|
49,504
|
47,218
|
25,374
|
23,850
|
16,230
|
14,706
|
|
1.1/4″
|
47,625
|
46,024
|
54,991
|
52,476
|
27,787
|
26,162
|
19,075
|
17,449
|
|
1.3/8″
|
52.374
|
50,647
|
60,502
|
57,734
|
30,632
|
28,905
|
20,701
|
18,973
|
|
1.1/2″
|
57,150
|
55,245
|
65,989
|
62,992
|
33,451
|
31,623
|
22,352
|
20,523
|
OBS: ROSCA: Especificar – UNC/UNF/BSW/BSF.
ROSCA SERIE 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
540 UNC |
2A
|
3,154
|
3,026
|
2,743
|
2,678
|
2,398
|
2B
|
2,487
|
2,697
|
2,764
|
2,847
|
3,175
|
|
|
3A
|
3,175
|
3,046
|
2,763
|
2,716
|
2,418
|
3B
|
2,487
|
2,697
|
2,764
|
2,827
|
3,175
|
||
|
Nº
5 44 UNF |
2A
|
3,157
|
3,036
|
2,781
|
2,781
|
2,469
|
2B
|
2,551
|
2,740
|
2,800
|
2,880
|
3,175
|
|
|
3A
|
3,175
|
3,054
|
2,799
|
2,751
|
2,487
|
3B
|
2,551
|
2,740
|
2,800
|
2,860
|
3,175
|
||
|
Nº
632 UNC |
2A
|
3,484
|
3,333
|
2,969
|
2,899
|
2,540
|
2B
|
2,642
|
2,895
|
2,990
|
3,083
|
3,506
|
|
|
3A
|
3,505
|
3,353
|
2,989
|
2,937
|
2,560
|
3B
|
2,642
|
2,895
|
2,990
|
3,058
|
3,506
|
||
|
Nº
640 UNF |
2A
|
3,484
|
3,356
|
3,073
|
3,008
|
2,728
|
2B
|
2,820
|
3,022
|
3,094
|
3,180
|
3,506
|
|
|
3A
|
3,505
|
3,376
|
3,093
|
3,043
|
2,748
|
3B
|
2,820
|
3,012
|
3,094
|
3,157
|
3,506
|
||
|
Nº
832 UNF |
2A
|
4,142
|
3,991
|
3,627
|
3,554
|
3,198
|
2B
|
3,302
|
3,530
|
3,650
|
3,746
|
4,166
|
|
|
3A
|
4,165
|
4,014
|
3,649
|
3,595
|
3,221
|
3B
|
3,302
|
3,528
|
3,650
|
3,721
|
4,166
|
||
|
Nº
8 36 UNF |
2A
|
4,145
|
4,006
|
3,688
|
3,617
|
3,305
|
2B
|
3,404
|
3,606
|
3,709
|
3,799
|
4,166
|
|
|
3A
|
4,165
|
4,026
|
3,708
|
3,656
|
3,325
|
3B
|
3,404
|
3,596
|
3,709
|
3,776
|
4,166
|
||
|
Nº
1024 UNC |
2A
|
4,800
|
4,618
|
4,112
|
4,029
|
3,541
|
2B
|
3,683
|
3,962
|
4,138
|
4,246
|
4,826
|
|
|
3A
|
4,826
|
4,644
|
4,137
|
4,075
|
3,566
|
3B
|
3,683
|
3,949
|
4,138
|
4,218
|
4,826
|
||
|
Nº
1032 UNC |
2A
|
4,803
|
4,651
|
4,287
|
4,212
|
3,858
|
2B
|
3,963
|
4,165
|
4,311
|
4,409
|
4,826
|
|
|
3A
|
4,826
|
4,674
|
4,310
|
4,252
|
3,881
|
3B
|
3,963
|
4,168
|
4,311
|
4,384
|
4,826
|
||
|
Nº
1224 UNC |
2A
|
5,461
|
5,279
|
4,772
|
4,687
|
4,201
|
2B
|
4,344
|
4,597
|
4,799
|
4,909
|
5,487
|
|
|
3A
|
5,486
|
5,304
|
4,798
|
4,733
|
4,227
|
3B
|
4,344
|
4,589
|
4,799
|
4,881
|
5,487
|
||
|
Nº
12 28 UNF |
2A
|
5,461
|
5,296
|
4,871
|
4,791
|
4,379
|
2B
|
4,496
|
4,724
|
4,898
|
5,003
|
5,487
|
|
|
3A
|
5,486
|
5,322
|
4,897
|
4,837
|
4,404
|
3B
|
4,496
|
4,716
|
4,898
|
4,975
|
5,487
|
||
|
1/4″ 20 UNC |
2A
|
6,322
|
6,117
|
5,496
|
5,403
|
4,811
|
2B
|
4,979
|
5,257
|
5,55
|
5,648
|
6,350
|
|
|
3A
|
6,350
|
6,145
|
5,524
|
5,454
|
4,839
|
3B
|
4,979
|
5,250
|
5,525
|
5,615
|
6,350
|
||
|
1/4″
28
UNF |
2A
|
6,324
|
6,160
|
5,735
|
5,652
|
5,243
|
2B
|
5,360
|
5,588
|
5,761
|
5,869
|
6,350
|
|
|
3A
|
6,350
|
6,185
|
5,760
|
5,698
|
5,268
|
3B
|
5,360
|
5,562
|
5,761
|
5,842
|
6,350
|
||
|
5/16″
18
UNC |
2A
|
7,907
|
7,687
|
6,990
|
6,889
|
6,228
|
2B
|
6,401
|
6,731
|
7,021
|
7,155
|
7,938
|
|
|
3A
|
7,927
|
7,717
|
7,020
|
6,945
|
6,259
|
3B
|
6,401
|
6,680
|
7,021
|
7,119
|
7,938
|
||
|
5/16″
24
UNF |
2A
|
7,909
|
7,727
|
7,221
|
7,128
|
6,650
|
2B
|
6,782
|
7,035
|
7,251
|
7,371
|
7,938
|
|
|
3A
|
7,937
|
7,755
|
7,249
|
7,181
|
6,678
|
3B
|
6,782
|
6,995
|
7,250
|
7,340
|
7,938
|
||
|
3/8″
16
UNC |
2A
|
9,491
|
9,254
|
8,460
|
8,349
|
7,600
|
2B
|
7,798
|
8,153
|
8,494
|
8,638
|
9,525
|
|
|
3A
|
9,525
|
9,287
|
8,493
|
8,410
|
7,633
|
3B
|
7,798
|
8,082
|
8,494
|
8,602
|
9,525
|
||
|
3/8″
24
UNF |
2A
|
9,497
|
9,315
|
8,808
|
8,713
|
8,223
|
2B
|
8,382
|
8,636
|
8,837
|
8,961
|
9,525
|
|
|
3A
|
9,525
|
9,343
|
8,836
|
8,763
|
8,265
|
3B
|
8,382
|
8,564
|
8,837
|
8,930
|
9,525
|
||
|
7/16″
14
UNC |
2A
|
11,076
|
10,816
|
9,898
|
9,779
|
8,918
|
2B
|
9,144
|
9,550
|
9,934
|
10,088
|
11,113
|
|
|
3A
|
11,112
|
10,851
|
9,933
|
9,846
|
8,954
|
3B
|
9,144
|
9,441
|
9,934
|
10,050
|
11,113
|
||
|
7/16″
20
UNF |
2A
|
11,079
|
10,874
|
10,254
|
10,147
|
9,568
|
2B
|
9,729
|
10,033
|
10,287
|
10,424
|
11,113
|
|
|
3A
|
11,112
|
10,907
|
10,287
|
10,208
|
9,601
|
3B
|
9,729
|
9,946
|
10,287
|
10,391
|
11,113
|
||
|
1/2″
13
UNC |
2A
|
12,661
|
12,386
|
11,392
|
11,265
|
8,430
|
2B
|
10,592
|
11,023
|
11,430
|
11,595
|
12,700
|
|
|
3A
|
12,700
|
12,424
|
11,430
|
11,336
|
8,468
|
3B
|
10,592
|
10,881
|
11,430
|
11,551
|
12,700
|
||
|
1/2″
20
UNF |
2A
|
12,666
|
12,462
|
11,841
|
11,732
|
11,156
|
2B
|
11,329
|
11,607
|
11,875
|
1,016
|
12,700
|
|
|
3A
|
12,700
|
12,495
|
11,874
|
11,793
|
11,189
|
3B
|
11,329
|
11,523
|
11,875
|
11,981
|
12,700
|
||
|
9/16″
12
UNC |
2A
|
14,246
|
13,958
|
12,873
|
12,741
|
11,727
|
2B
|
11,989
|
12,446
|
12,914
|
13,086
|
14,288
|
|
|
3A
|
14,287
|
13,998
|
12,913
|
12,814
|
11,768
|
3B
|
11,989
|
12,301
|
12,914
|
13,042
|
14,288
|
||
|
9/16″
18
UNF |
2A
|
14,251
|
14,031
|
13,335
|
13,221
|
12,573
|
2B
|
12,751
|
13,081
|
13,371
|
13,520
|
14,288
|
|
|
3A
|
14,287
|
14,067
|
13,370
|
13,285
|
12,609
|
3B
|
12,751
|
12,969
|
13,371
|
13,482
|
14,288
|
||
|
5/8″
11
UNC |
2A
|
15,834
|
15,528
|
14,335
|
14,197
|
13,086
|
2B
|
13,386
|
13
,868 |
14,377
|
14,559
|
15,875
|
|
|
3A
|
15,875
|
15,568
|
14,376
|
14,273
|
13,127
|
3B
|
13,386
|
13,693
|
14,377
|
14,513
|
15,875
|
||
|
5/8″
18
UNF |
2A
|
15,839
|
15,619
|
14,922
|
14,804
|
14,161
|
2B
|
14,351
|
14,681
|
14,959
|
15,110
|
15,875
|
|
|
3A
|
15,875
|
15,655
|
14,958
|
14,870
|
14,196
|
3B
|
14,351
|
14,554
|
14,959
|
15,072
|
15,875
|
||
|
3/4″
10
UNC |
2A
|
19,004
|
18,677
|
17,353
|
17,204
|
15,979
|
2B
|
16,307
|
16,840
|
17,399
|
17,594
|
19,050
|
|
|
3A
|
19,050
|
18,273
|
17,399
|
17,288
|
16,025
|
3B
|
16,307
|
16,624
|
17,399
|
17,543
|
19,050
|
||
|
3/4″
16
UNF |
2A
|
19,011
|
18,774
|
17,980
|
17,854
|
17,120
|
2B
|
17,323
|
17,678
|
18,019
|
18,183
|
19,050
|
|
|
3A
|
19,050
|
18,812
|
18,018
|
17,923
|
17,158
|
3B
|
17,323
|
17,546
|
18,019
|
18,143
|
19,050
|
||
|
7/8″
9
UNC |
2A
|
22,176
|
21,824
|
20,342
|
20,183
|
18,816
|
2B
|
19,177
|
19,761
|
20,392
|
20,599
|
22,225
|
|
|
3A
|
22,225
|
21,872
|
20,391
|
20,272
|
18,865
|
3B
|
19,177
|
19,509
|
20,392
|
20,546
|
22,225
|
||
|
7/8″
14
UNF |
2A
|
22,184
|
21,923
|
21,005
|
20,869
|
20,025
|
2B
|
20,270
|
20,675
|
21,047
|
21,224
|
22,225
|
|
|
3A
|
22,225
|
21,964
|
21,046
|
20,943
|
20,066
|
3B
|
20,270
|
20,492
|
21,047
|
21,181
|
22,225
|
||
|
1
– 8 UNC |
2A
|
25,349
|
24,969
|
23,286
|
23,114
|
21,570
|
2B
|
21,971
|
22,606
|
23,338
|
23,561
|
25,400
|
|
|
3A
|
25,400
|
25,019
|
23,337
|
23,208
|
21,620
|
3B
|
21,971
|
22,344
|
23,338
|
23,505
|
25,440
|
||
|
1
– 12 UNF |
2A
|
25,254
|
25,065
|
23,980
|
23,831
|
22,835
|
2B
|
23,114
|
23,571
|
24,026
|
24,218
|
25,400
|
|
|
3A
|
25,400
|
25,111
|
24,025
|
23,915
|
22,880
|
3B
|
23,114
|
23,362
|
24,026
|
24,170
|
25,400
|
||
|
Diâmetro Nominal nº fios-série |
Rosca
Externa |
Rosca
Interna |
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Maior |
Diâmetro
Primitivo |
Diâmetro Menor |
Classe
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Diâmetro
Menor |
Diâmetro
Primitivo |
Diâmetro Maior |
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2A | 28,519 | 28,103 | 26,162 | 25,980 | 24,199 | 2B | 24,638 | 25,349 | 26,218 | 26,456 | 28,575 | |
| 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” 8 UN |
2A | 25,521 | 28,141 | 26,459 | 26,284 | 24,742 | 2B | 25,146 | 25,781 | 26,513 | 26,741 | 28,575 | |
| 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” 12 UNF |
2A | 28,529 | 28,240 | 27,155 | 27,003 | 26,010 | 2B | 26,269 | 26,746 | 27,201 | 27,398 | 28,575 | |
| 3A | 28,575 | 28,286 | 27,200 | 27,087 | 26,055 | 3B | 26,289 | 26,537 | 27,201 | 27,350 | 28,575 | ||
|
1.1/4” 7 UNC |
2A | 31,694 | 31,278 | 29,337 | 29,150 | 27,374 | 2A | 27,813 | 28,524 | 29,393 | 29,636 | 31,750 | |
| 3A | 31,750 | 31,334 | 29,392 | 29,254 | 27,429 | 3B | 27,813 | 28,257 | 29,393 | 29,575 | 31,750 | ||
|
1.1/4” 8 UN |
2A | 31,696 | 31,316 | 29,634 | 29,457 | 27,917 | 2B | 28,321 | 28,956 | 29,688 | 29,921 | 31,750 | |
| 3A | 31,750 | 31,369 | 29,687 | 29,553 | 27,970 | 3B | 28,321 | 28,694 | 29,688 | 29,862 | 31,750 | ||
|
1.1/4” 12 UNF |
2A | 31,704 | 31,415 | 30,330 | 30,173 | 29,185 | 2B | 29,464 | 29,921 | 30,376 | 30,579 | 31,750 | |
| 3A | 31,750 | 31,461 | 30,375 | 30,260 | 29,230 | 3B | 29,464 | 29,712 | 30,376 | 30,528 | 31,750 | ||
|
1.3/8” 6 UNC |
2A | 34,864 | 34,402 | 32,113 | 31,911 | 29,825 | 2B | 30,353 | 31,115 | 32,175 | 32,438 | 34,925 | |
| 3A | 34,925 | 34,463 | 32,174 | 32,022 | 29,886 | 3B | 30,353 | 30,850 | 32,175 | 32,372 | 34,925 | ||
|
1.3/8” 8 UN |
2A | 34,869 | 34,489 | 32,806 | 32,624 | 31,090 | 2B | 31,496 | 32,131 | 32,863 | 33,098 | 34,925 | |
| 3A | 34,925 | 34,544 | 32,862 | 32,726 | 31,145 | 3B | 31,496 | 31,869 | 32,863 | 33,040 | 34,925 | ||
|
1.3/8” 12 UNF |
2A | 34,876 | 34,588 | 33,502 | 33,343 | 32,357 | 2B | 32,639 | 33,096 | 33,551 | 33,759 | 34,925 | |
| 3A | 34,925 | 34,636 | 33,550 | 33,432 | 32,405 | 3B | 32,639 | 32,887 | 33,551 | 33,705 | 34,925 | ||
|
1.1/2” 6 UNC |
2A | 38,039 | 37,577 | 35,288 | 35,083 | 33,000 | 2B | 33,528 | 34,290 | 35,350 | 35,615 | 38,100 | |
| 3A | 38,100 | 37,638 | 35,349 | 35,195 | 33,061 | 3B | 33,528 | 34,025 | 35,350 | 35,549 | 38,100 | ||
|
1.1/2” 8 UN |
2A | 38,044 | 37,664 | 35,981 | 35,797 | 34,265 | 2B | 34,671 | 35,306 | 36,038 | 36,278 | 38,100 | |
| 3A | 38,100 | 37,719 | 36,037 | 35,898 | 34,320 | 3B | 34,671 | 35,044 | 36,038 | 36,217 | 38,100 | ||
|
1.1/2” 12 UNF |
2A | 38,051 | 37,763 | 36,677 | 36,516 | 35,532 | 2B | 35,814 | 36,271 | 36,726 | 36,936 | 38,100 | |
| 3A | 38,100 | 37,811 | 36,725 | 36,604 | 35,580 | 3B | 35,814 | 36,062 | 36,726 | 36,855 | 38,100 | ||
|
1.5/8” 8 UN |
2A | 41,219 | 40,839 | 39,156 | 38,696 | 37,551 | 2B | 37,846 | 38,481 | 39,213 | 39,458 | 41,275 | |
| 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” 5 UNC |
2A | 44,381 | 43,861 | 41,081 | 40,856 | 38,334 | 2B | 38,964 | 39,827 | 41,151 | 41,445 | 44,450 | |
| 3A | 44,450 | 43,930 | 41,150 | 40,981 | 38,403 | 3B | 38,964 | 39,560 | 41,151 | 41,371 | 44,450 | ||
|
1.3/4” 8 UN |
2A | 44,391 | 44,011 | 42,329 | 42,139 | 40,612 | 2B | 41,021 | 41,656 | 42,388 | 42,536 | 44,450 | |
| 3A | 44,450 | 44,069 | 42,387 | 42,243 | 40,670 | 3B | 41,021 | 41,394 | 42,388 | 42,575 | 44,450 | ||
|
1.7/8” 8 UN |
2A | 47,566 | 47,186 | 45,504 | 45,309 | 43,787 | 2B | 44,196 | 44,831 | 45,563 | 45,816 | 47,625 | |
| 3A | 47,625 | 47,244 | 45,562 | 45,418 | 43,845 | 3B | 44,196 | 44,569 | 45,563 | 45,753 | 45,625 | ||
|
2-4 1/2 UND |
2A | 50,726 | 50,168 | 47,061 | 46,820 | 44,003 | 2B | 44,679 | 45,593 | 47,135 | 47,449 | 50,880 | |
| 3A | 50,800 | 50,242 | 47,134 | 46,955 | 47,077 | 3B | 44,679 | 45,366 | 47,135 | 47,371 | 50,800 | ||
|
2-8 UN
|
2A | 50,741 | 50,361 | 48,679 | 48,481 | 46,962 | 2B | 47,371 | 48,006 | 48,738 | 48,994 | 50,800 | |
| 3A | 50,800 | 50,419 | 48,737 | 48,591 | 47,020 | 3B | 47,371 | 47,744 | 48,738 | 48,930 | 50,800 | ||
|
2.1/8” 8 UN |
2A | 53,914 | 53,534 | 51,851 | 51,651 | 50,122 | 2B | 50,546 | 51,181 | 51,913 | 52,171 | 53,975 | |
| 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” 4.1/2” UNC |
2A | 57,076 | 56,518 | 53,411 | 53,165 | 50,353 | 2B | 51,029 | 51,943 | 53,465 | 53,804 | 57,150 | |
| 3A | 57,150 | 56,592 | 53,484 | 53,300 | 50,427 | 3B | 51,029 | 51,716 | 53,485 | 53,726 | 57,150 | ||
|
2.1/4” 8 UN |
2A | 57,089 | 56,709 | 55,026 | 54,026 | 54,824 | 2B | 53,721 | 54,356 | 55,088 | 55,351 | 57,150 | |
| 3A | 57,150 | 56,769 | 55,067 | 54,936 | 53,370 | 3B | 53,721 | 54,094 | 55,088 | 55,285 | 57,150 | ||
|
2.3/8” 8 UN |
2A | 60,264 | 59,884 | 58,201 | 57,996 | 56,485 | 2B | 56,896 | 57,531 | 56,263 | 58,529 | 60,325 | |
| 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” 4 UNC |
2A | 63,421 | 62,817 | 59,296 | 59,033 | 55,860 | 2B | 56,617 | 57,581 | 59,376 | 59,717 | 63,500 | |
| 3A | 63,500 | 62,896 | 59,375 | 59,177 | 55,938 | 3B | 56,617 | 57,388 | 59,376 | 59,631 | 63,500 | ||
|
2.1/2” 8 UN |
2A | 63,439 | 63,059 | 61,376 | 61,169 | 59,660 | 2B | 60,071 | 60,706 | 61,438 | 61,706 | 63,500 | |
| 3A | 63,500 | 63,119 | 61,437 | 59,283 | 59,720 | 3B | 60,071 | 60,444 | 61,438 | 61,640 | 63,500 | ||
|
2.5/6” 6 UN |
2A | 66,611 | 66,231 | 64,549 | 64,341 | 62,832 | 2B | 63,246 | 63,881 | 64,613 | 64,884 | 66,675 | |
| 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” 4 UNC |
2A | 69,768 | 69,165 | 65,643 | 65,378 | 62,207 | 2B | 62,967 | 63,931 | 65,726 | 66,073 | 69,850 | |
| 3A | 69,850 | 69,246 | 65,725 | 65,525 | 62,288 | 3B | 62,967 | 63,738 | 65,726 | 65,986 | 69,850 | ||
|
2.3/4” 8 UN |
2A | 69,786 | 69,406 | 67,724 | 67,514 | 66,007 | 2B | 66,421 | 67,056 | 67,788 | 68,061 | 69,850 | |
| 3A | 69,850 | 69,469 | 67,787 | 67,628 | 56,070 | 3B | 66,421 | 66,794 | 67,788 | 67,993 | 69,850 | ||
|
2.7/8” 8 UN |
2A | 72,961 | 72,581 | 70,686 | 69,182 | 69,182 | 2B | 69,596 | 70,231 | 70,963 | 71,241 | 73,025 | |
| 3A | 73,025 | 72,644 | 70,962 | 70,803 | 69,245 | 3B | 69,596 | 69,969 | 70,963 | 71,170 | 73,025 | ||
|
3 – 4 UND
|
2A | 76,118 | 75,515 | 71,993 | 71,722 | 68,557 | 2B | 69,317 | 70,281 | 72,076 | 72,428 | 76,200 | |
| 3A | 76,200 | 75,596 | 72,075 | 71,872 | 68,638 | 3B | 69,317 | 70,088 | 72,076 | 72,339 | 76,200 | ||
|
3 – 8 UN
|
2A | 76,133 | 75,753 | 74,071 | 73,856 | 72,354 | 2B | 72,771 | 73,406 | 74,138 | 74,419 | 76,200 | |
| 3A | 76,200 | 75,819 | 74,137 | 73,975 | 72,420 | 3B | 72,771 | 73,144 | 74,138 | 74,138 | 76,200 | ||
|
3.1/4” 4 UNC |
2A | 82,466 | 81,862 | 78,341 | 78,065 | 74,905 | 2B | 75,667 | 76,631 | 78,426 | 78,783 | 82,550 | |
| 3A | 82,550 | 81,946 | 78,425 | 78,217 | 74,988 | 3B | 75,667 | 76,438 | 78,426 | 78,694 | 82,550 | ||
|
3.1/4” 8 UN |
2A | 82,493 | 82,103 | 80,421 | 80,201 | 78,704 | 2B | 79,121 | 79,756 | 80,488 | 80,774 | 82,550 | |
| 3A | 82,550 | 82,169 | 80,487 | 80,323 | 78,770 | 3B | 79,121 | 79,494 | 80,488 | 80,703 | 82,550 | ||
|
3.3/8” 8 UN |
2A | 85,658 | 85,278 | 83,596 | 83,373 | 81,879 | 2B | 82,296 | 82,931 | 83,663 | 83,952 | 85,725 | |
| 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” 4 UNC |
2A | 88,816 | 88,212 | 84,691 | 84,412 | 81,255 | 2B | 82,017 | 82,981 | 84,776 | 85,138 | 88,900 | |
| 3A | 88,900 | 88,296 | 84,775 | 84,565 | 81,338 | 3B | 82,017 | 82,788 | 84,776 | 85,049 | 88,900 | ||
|
3.1/2” 8 UN |
2A | 88,833 | 88,453 | 86,771 | 86,548 | 85,054 | 2B | 85,571 | 86,106 | 86,838 | 87,129 | 88,900 | |
| 3A | 66,900 | 88,519 | 86,837 | 86,670 | 85,120 | 3B | 85,571 | 85,844 | 86,838 | 87,055 | 88,900 | ||
|
3.5/8” 8 UN |
2A | 92,006 | 91,626 | 89,943 | 89,718 | 88,227 | 2B | 86,646 | 89,291 | 90,013 | 90,307 | 92,075 | |
| 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” 4UNC |
2A | 95,163 | 94,560 | 91,038 | 90,755 | 87,602 | 2B | 88,637 | 89,331 | 91,126 | 91,126 | 95,250 | |
| 3A | 95,163 | 94,560 | 91,038 | 90,912 | 87,688 | 3B | 88367 | 89,138 | 91,126 | 91,401 | 95,250 | ||
|
3.3/4” 8 UN |
2A | 95,181 | 94,801 | 93,118 | 92,891 | 91,402 | 2B | 91,821 | 92,456 | 93,188 | 93,484 | 95,250 | |
| 3A | 95,250 | 94,869 | 93,187 | 93,018 | 91,470 | 3B | 91,821 | 92,194 | 93,188 | 93,411 | 95,250 | ||
|
3.7/8” 8 UN |
2A | 96,356 | 97,976 | 96,293 | 96,063 | 94,577 | 2B | 94,996 | 95,631 | 96,363 | 96,662 | 98,425 | |
| 3A | 96,428 | 98,044 | 96,362 | 96,190 | 94,645 | 3B | 94,996 | 95,369 | 96,363 | 96,588 | 98,425 | ||
|
4 – 4 UNC
|
2A | 101,513 | 100,910 | 97,388 | 97,102 | 93,952 | 2B | 94,717 | 95,681 | 973,476 | 97,848 | 101,600 | |
| 3A | 101,600 | 100,996 | 97,475 | 97,260 | 94,038 | 3B | 94,717 | 95,488 | 97,476 | 97,756 | 101,600 | ||
|
4 – 8 UN
|
2A | 101,531 | 101,151 | 99,468 | 99,238 | 97,752 | 2B | 98,171 | 98,806 | 99,538 | 99,839 | 101,600 | |
| 3A | 101,600 | 101,219 | 99,537 | 99,365 | 97,820 | 3B | 98,171 | 98,544 | 99,538 | 99,763 | 101,600 | ||