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REFERÊNCIA
ASME B16.5 - 2009 e ASME B1.1
|
Diâmetro
Nominal
|
Diâmetro
Externo
|
Diâmetro
Primitivo
|
||
|
Classe
2A
|
máx.
|
min.
|
máx.
|
min.
|
|
1/4"
- 20 UNC
|
6,322
|
6,117
|
5,496
|
5,403
|
|
5/16"
- 18 UNC
|
7,907
|
7,687
|
6,990
|
6,889
|
|
3/8"
- 16 UNC
|
9,491
|
9,254
|
8,460
|
8,349
|
|
7/16"
- 14 UNC
|
11,076
|
10,816
|
9,898
|
9,779
|
|
1/2"
- 13 UNC
|
12,661
|
12,386
|
11,392
|
11,265
|
|
9/16"
- 12 UNC
|
14,246
|
13,958
|
12,873
|
12,741
|
|
5/8"
- 11 UNC
|
15,834
|
15,528
|
14,335
|
14,197
|
|
3/4"
- 10 UNC
|
19,004
|
18,677
|
17,353
|
17,204
|
|
7/8"
- 9 UNC
|
22,176
|
21,824
|
20,342
|
20,183
|
|
1"
- 8 UNC
|
25,349
|
24,969
|
23,286
|
23,114
|
|
1.1/8"
- 8 UN
|
28,521
|
28,141
|
26,459
|
26,284
|
|
1.1/4"
- 8 UN
|
31,696
|
31,316
|
29,634
|
29,457
|
|
1.3/8"
- 8 UN
|
34,869
|
34,489
|
32,806
|
32,624
|
|
1.1/2"
- 8 UN
|
38,044
|
37,664
|
35,981
|
35,797
|
|
1.5/8"
- 8 UN
|
41,219
|
40,839
|
39,156
|
38,969
|
|
1.3/4"
- 8 UN
|
44,391
|
44,011
|
42,329
|
42,139
|
|
1.7/8"
- 8 UN
|
47,566
|
47,186
|
45,504
|
45,309
|
|
2"
- 8 UN
|
50,741
|
50,361
|
48,679
|
48,481
|
|
2.1/4"
- 8 UN
|
57,089
|
56,709
|
55,026
|
54,824
|
|
2.1/2"
- 8 UN
|
63,439
|
63,059
|
61,376
|
61,169
|
|
2.3/4"
- 8 UN
|
69,786
|
69,406
|
67,724
|
67,514
|
|
3"
- 8 UN
|
76,133
|
75,753
|
74,071
|
73,856
|
