UNE 7050-4

ISO 3310-2

ASTM E323

Opening(mm)

Opening(mm)

N°

●■125

●■125

5 in.

●■112

●■106

●■106

4.24 in.

●■100

●■100

4 in.

●■90

●■90

3 1/2 in.

●■80

●■75

●■75

3 in.

●■71

●■63

●■63

2 1/2 in.

●■56

●■53

●■53

2.12 in.

●■50

●■50

2 in.

●■45

●■45

1 3/4 in.

●■40

●■37.5

●■37.5

1 1/2 in.

●■35.5

●■31.5

●■31.5

1 1/4 in.

●■28

●■26.5

●■26.5

1.06 in.

●■25

●■25

1 in.

●■22.4

●■22.4

7/8 in.

●■20

●■19

●■19

3/4 in.

●■18

●■16

●■16

5/8 in.

●■14

●■13.2

●■13.2

0.530 in.

●■12.5

●■12.5

1/2 in.

●■11.2

●■11.2

7/16 in.

●■10

●■9.5

●■9.5

3/8 in.

●■9

●■8

●■8

5/16 in.

●■7.1

●■6.7

●■6.7

0.265 in.

●■6.3

●■6.3

1/4 in.

●■5.6

●■5.6

3 1/2 in.

●■5

●■4.75

●■4.75

4

●■4.5

●■4

●■4

5

●■3.55

●■3.35

●■3.35

6

●■3.15

●■2.8

●■2.8

7

●■2.5

●■2.36

●■2.36

8

●■2.24

●■2

●■2

10

●■1.8

●■1.7

●■1.7

12

●■1.6

●■1.4

●■1.4

14

●■1.25

●■1.18

●■1.18

16

●■1.12

●■1

●■1

18