REFERÊNCIA
ASME B18.2.1 - 1996
(Tabela 3)
|
Diâmetro
Nominal |
E
|
F
|
G
|
H
|
R
|
LT
L<ou =6"L>6" |
|||||
|
|
máx.
|
máx.
|
min.
|
máx.
|
min
|
máx.
|
min.
|
máx.
|
min.
|
básico
|
básico
|
|
1/2"
|
13,081
|
22,225
|
21,590
|
25,654
|
24,612
|
9,245
|
7,670
|
0,762
|
0,254
|
31,750
|
38,100
|
|
5/8"
|
16,306
|
26,974
|
26,187
|
31,165
|
29,845
|
11,277
|
9,601
|
1,524
|
0,508
|
38,100
|
44,450
|
|
3/4"
|
19,507
|
31,750
|
30,784
|
36,652
|
35,128
|
13,309
|
11,557
|
1,524
|
0,508
|
44,450
|
50,800
|
|
7/8"
|
22,733
|
36,525
|
35,407
|
42,164
|
40,360
|
15,341
|
13,487
|
1,524
|
0,508
|
50,800
|
57,150
|
|
1"
|
25,958
|
41,275
|
40,005
|
47,650
|
45,618
|
17,780
|
15,011
|
2,286
|
0,762
|
57,150
|
63,500
|
|
1.1/8"
|
29,184
|
46,024
|
44,602
|
53,162
|
50,850
|
19,812
|
16,713
|
2,286
|
0,762
|
63,500
|
69,850
|
|
1.1/4"
|
32,435
|
50,800
|
49,225
|
58,648
|
56,108
|
22,225
|
19,024
|
2,286
|
0,762
|
69,850
|
76,200
|
|
1.3/8"
|
35,661
|
55,575
|
53,822
|
64,160
|
61,366
|
23,876
|
20,574
|
2,286
|
0,762
|
76,200
|
82,550
|
|
1.1/2"
|
38,887
|
60,325
|
58,420
|
69,646
|
66,598
|
26,314
|
22,910
|
2,286
|
0,762
|
82,550
|
88,900
|
|
1.3/4"
|
45,339
|
69,850
|
67,614
|
80,645
|
77,089
|
30,378
|
26,771
|
3,048
|
1,016
|
95,250
|
101,600
|
|
2"
|
51,790
|
79,375
|
76,835
|
91,643
|
87,604
|
35,255
|
29,845
|
3,048
|
1,016
|
107,950
|
114,300
|
|
2.1/4"
|
58,547
|
88,900
|
86,055
|
102,641
|
98,094
|
39,319
|
33,705
|
4,826
|
1,524
|
120,650
|
127,000
|
|
2.1/2"
|
64,998
|
98,425
|
95,250
|
113,639
|
108,585
|
43,383
|
37,566
|
4,826
|
1,524
|
133,350
|
139,700
|
|
2.3/4"
|
71,805
|
107,950
|
104,444
|
124,637
|
119,075
|
47,472
|
41,452
|
4,826
|
1,524
|
146,050
|
152,400
|
|
3"
|
78,257
|
117,475
|
113,665
|
135,636
|
129,590
|
52,324
|
46,101
|
4,826
|
1,524
|
158,750
|
165,100
|
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"
|
| Até1" |
+0,508
-0,762 |
+0,508
-0,762 |
+0,508
-0,762 |
---------
|
---------
|
---------
|
| Acima
de 1"até 2.1/2" |
+0,508
-1,016 |
+1,016
-1,524 |
+1,524
-2,032 |
+2,032
-2,540 |
+3,048
-3,048 |
+4,572
-4,572 |
| Acima
de 2.1/2"até 4" |
+1,016
-1,524 |
+1,524
-2,032 |
+2,032
-2,540 |
+2,540
-3,556 |
+4,064
-4,064 |
+5,080
-5,080 |
| Acima
de 4" até 6" |
+1,524
-2,540 |
+2,032
-2,540 |
+2,540
-2,540 |
+3,048
-4,064 |
+4,572
-4,572 |
+5,588
-5,588 |
| Acima de 6" |
+2,540
-4,572 |
+3,048
-4,572 |
+3,556
-4,572 |
+4,064
-5,080 |
+5,588
-5,588 |
+6,096
-6,096 |
OBS2: ROSCAS: Quando não especificado, usar - UNC-2A, para todos os diâmetros.
