-

OSS

DIAMETER MM

USA / CANADA

FRANCE

UK

JAPON

14.97

4

47

H 1/2

7

15.1

4 1/4

I

15.29

4 1/2

48

I 1/2

8

15.5

4 3/4

J

15.61

5

49

J 1/2

9

15.92

5 1/4

50

K

16.1

5 1/2

K 1/2

10

16.24

5 3/4

L

16.56

6

52

L 1/2

11

16.7

6 1/4

M

12

16.88

6 1/2

53

M 1/2

13

17.1

6 3/4

N

17.2

7

54

N 1/2

14

17.52

7 1/4

55

O

17.7

7 1/2

O 1/2

15

17.83

7 3/4

56

P

18.15

8

57

P 1/2

16

18.3

8 1/4

Q

18.47

8 1/2

58

Q 1/2

17

18.79

8 3/4

59

R

19.0

9

R 1/2

18

19.11

9 1/4

60

S

19.43

9 1/2

61

S 1/2

19

19.6

9 3/4

T

19.75

10

62

T 1/2

20

20.0

10 1/4

U

21

20.06

10 1/2

63

U 1/2

22

20.38

10 3/4

64

V

20.6

11

V 1/2

23

20.70

11 1/4

65

W

21.02

11 1/2

66

W 1/2

24

21.2

11 3/4

X

21.34

12

67

X 1/2

25

21.6

12 1/4

Y

21.66

12 1/2

68

Y 1/2

26

21.97

12 3/4

Z

22.29

13

69

Z 1/2

27