REFERÊNCIA
ASME B18.2.1 - 1996
(Tabela 2)
|
Diâmetro
Nominal |
E
|
F
|
G
|
H
|
R
|
LT
L<ou =6"L>6" |
|||||
|
|
máx.
|
máx.
|
min.
|
máx.
|
min
|
máx.
|
min.
|
máx.
|
min.
|
básico
|
básico
|
|
1/4"
|
6,604
|
11,125
|
10,795
|
12,827
|
12,293
|
4,775
|
3,810
|
0,762
|
0,254
|
19,050
|
25,400
|
|
5/16"
|
8,299
|
12,700
|
12,293
|
14,655
|
14,020
|
5,969
|
4,953
|
0,762
|
0,254
|
22,225
|
28,575
|
|
3/8"
|
9,855
|
14,274
|
13,817
|
16,510
|
15,748
|
6,807
|
5,740
|
0,762
|
0,254
|
25,400
|
31,750
|
|
7/16"
|
11,480
|
15,875
|
15,316
|
18,338
|
17,449
|
8,026
|
6,908
|
0,762
|
0,254
|
28,575
|
34,925
|
|
1/2"
|
13,081
|
19,050
|
18,415
|
21,996
|
20,980
|
9,245
|
7,670
|
0,762
|
0,254
|
31,750
|
38,100
|
|
5/8"
|
16,306
|
23,812
|
23,012
|
27,508
|
26,238
|
11,277
|
9,601
|
1,524
|
0,508
|
38,100
|
44,450
|
|
3/4"
|
19,507
|
28,575
|
27,635
|
32,994
|
31,496
|
13,309
|
11,557
|
1,524
|
0,508
|
44,450
|
50,800
|
|
7/8"
|
22,733
|
33,324
|
32,232
|
38,506
|
36,753
|
15,341
|
13,487
|
1,524
|
0,508
|
50,800
|
57,150
|
|
1"
|
25,958
|
38,100
|
36,830
|
43,992
|
41,986
|
17,780
|
15,011
|
2,286
|
0,762
|
57,150
|
63,500
|
|
1.1/8"
|
29,184
|
42,875
|
41,427
|
49,504
|
47,218
|
19,812
|
16,713
|
2,286
|
0,762
|
63,500
|
69,850
|
|
1.1/4"
|
32,435
|
47,625
|
46,024
|
54,991
|
52,476
|
22,250
|
19,024
|
2,286
|
0,762
|
69,850
|
76,200
|
|
1.3/8"
|
35,661
|
52,374
|
50,647
|
60,502
|
57,734
|
23,876
|
20,574
|
2,286
|
0,762
|
76,200
|
82,550
|
|
1.1/2"
|
38,887
|
57,150
|
55,245
|
65,989
|
62,992
|
26,314
|
22,910
|
2,286
|
0,762
|
82,550
|
88,900
|
|
1.3/4"
|
45,339
|
66,675
|
64,465
|
76,987
|
73,482
|
30,378
|
26,771
|
3,048
|
1,016
|
95,250
|
101,600
|
|
2"
|
51,790
|
76,200
|
73,660
|
87,985
|
83,972
|
35,255
|
29,845
|
3,048
|
1,016
|
107,950
|
114,300
|
|
2.1/4"
|
58,547
|
85,725
|
82,854
|
98,983
|
94,462
|
39,319
|
33,705
|
4,826
|
1,524
|
120,650
|
127,000
|
|
2.1/2"
|
64,998
|
95,250
|
92,075
|
109,982
|
104,978
|
43,383
|
37,566
|
4,826
|
1,524
|
133,350
|
139,700
|
|
2.3/4"
|
71,805
|
104,775
|
101,295
|
120,980
|
115,468
|
47,472
|
41,452
|
4,826
|
1,524
|
146,050
|
152,400
|
|
3"
|
78,257
|
114,300
|
110,490
|
131,978
|
125,958
|
52,324
|
46,101
|
4,826
|
1,524
|
158,750
|
165,100
|
|
3.1/4"
|
84,709
|
123,825
|
119,684
|
142,976
|
136,448
|
57,175
|
49,174
|
4,826
|
1,524
|
171,450
|
177,800
|
|
3.1/2"
|
91,160
|
133,350
|
128,905
|
153,974
|
146,964
|
60,452
|
52,247
|
4,826
|
1,524
|
184,150
|
190,500
|
|
3.3/4"
|
97,993
|
142,875
|
138,099
|
164,973
|
157,429
|
65,328
|
56,921
|
4,826
|
1,524
|
196,850
|
203,200
|
|
4"
|
104,419
|
152,400
|
147,320
|
175,971
|
167,944
|
70,205
|
61,569
|
4,826
|
1,524
|
209,550
|
215,900
|
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 |
OBS: ROSCAS: Quando não especificado, usar - UNC-2A, para todos os diâmetros.
