REFERÊNCIA
ASME B18.2.1 - 1996
(Tabelas 3 e 6)
|
Diâmetro
Nominal |
E
|
F
|
G
|
H
|
R
|
LT
L<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.
2-) Roscas: quando não especificado, usar: para O 1" e menores -
UNC- 2A, para O 1.1/8" e maiores - 8UN-2A
