粗柄机用和手用丝锥   (mm)

代号

公称直径

d

d₁

l

l₁

L

螺距

P

方头

a

l₂

M1

1.0

2.5

5.5

4.5

38.5

0.25

2.00

4

M1.1

1.1

M1.2

1.2

M1.4

1.4

7.0

5.0

40.0

0.30

M1.6

1.6

8.0

41.0

0.35

M1.8

1.8

0.35

M2

2.0

5.5

0.40

M2.2

2.2

2.8

9.5

6.0

44.5

0.45

2.24

5

M2.5

2.5

M1×0.2

1.0

2.5

5.5

4.5

38.5

0.2

2.00

4

M1.1×0.2

1.1

M1.2×0.2

1.2

M1.4×0.2

1.4

7.0

5.0

40.0

M1.6×0.2

1.6

8.0

41.0

M1.8×0.2

1.8

M2×0.25

2.0

5.5

0.25

M2.2×0.25

2.2

2.8

9.5

6.0

44.5

2.24

5

M2.5×0.35

2.5

0.35