粗牙：M                                            Coarse:M

规格

P

L

I

d₁

口

M3

0.5

48

11

3.15

2.5

M4

0.7

53

13

4.0

3.15

M5

0.8

58

16

5.0

4.0

M6

1

66

19

6.3

5.0

M7

1

66

19

7.1

5.6

细牙：M                                               Fine:MF

规格

P

L

I

d₁

口

M3×0.35

0.35

48

11

3.15

2.5

M4×0.5

0.5

53

13

4.0

3.15

M5×0.5

0.5

58

16

5.0

4.0

M6×0.75

0.75

66

19

6.3

5.0

M7×0.75

0.75

66

19

7.1

5.6