Tabela de equivalências internacionais para tamanhos dos anéis
Diâmetro
Interior
(mm)
Interior
(mm)
Diâmetro
Interior
(Polegadas)
Interior
(Polegadas)
Circunferência
Interior
(Polegadas)
Interior
(Polegadas)
48
4 1/2
I
8
15.3
0.602
1.89
48.7
4 3/4
J
9
15.5
0.61
1.915
49.3
5
J 1/2
9
15.7
0.618
1.941
49.9
5 1/4
K
10
15.9
0.626
1.966
50.6
5 1/2
K 1/2
10
16.1
0.634
1.991
51.2
5 3/4
L
11.75
16.3
0.642
2.016
51.8
6
L 1/2
11
12.75
16.5
0.65
2.041
52.5
6 1/4
M
12
16.7
0.658
2.066
53.1
6 1/2
M 1/2
13
14
16.9
0.666
2.091
53.8
6 3/4
N
17.1
0.674
2.116
54.4
7
N 1/2
14
15.25
17.3
0.682
2.141
55
7 1/4
O
17.5
0.69
2.167
55.7
7 1/2
O 1/2
15
16.5
17.7
0.698
2.192
56.3
7 3/4
P
17.9
0.706
2.217
56.9
8
P 1/2
16
17.75
18.1
0.714
2.242
57.6
8 1/4
Q
18.3
0.722
2.267
58.2
8 1/2
Q 1/2
17
18.5
0.73
2.292
58.9
8 3/4
R
19
18.7
0.738
2.317
59.5
9
R 1/2
18
18.9
0.746
2.342
60.1
9 1/4
S
20.25
19.2
0.754
2.368
60.8
9 1/2
S 1/2
19
19.4
0.762
2.393
61.4
9 3/4
T
21.5
19.6
0.770
2.418
62.1
10
T 1/2
20
19.8
0.778
2.443
62.7
10 1/4
U
21
20.0
0.786
2.468
63.3
10 1/2
U 1/2
22
22.75
20.2
0.794
2.493
64.0
10 3/4
V
20.4
0.802
2.518
