Metric fine Thread (MF) ISO DIN 13

Ø mm

Pitch P
mm

Ø Drill
mm

Ø Drill

Ø Predrill
nut threads 7H*

Min.
mm

Max.
mm

Min.
mm

Max.
mm

M 2,5

0,35

2,35

2,35

2,38

2,121

2,221

M 3

0,35

2,85

2,85

2,88

2,621

2,721

M 4

0,35

3,85

3,85

3,88

3,621

3,721

M 4

0,50

3,80

3,78

3,83

3,459

3,639

M 5

0,50

4,80

4,78

4,83

4,459

4,639

M 5,5

0,50

5,30

5,28

5,33

4,959

5,139

M 6

0,75

5,65

5,62

5,70

5,188

5,424

M 7

0,75

6,65

6,62

6,70

6,188

6,424

M 8

0,75

7,65

7,62

7,70

7,188

7,424

M 8

1,00

7,55

7,52

7,62

6,917

7,217

M 9

0,75

8,65

8,62

8,70

8,188

8,424

M 9

1,00

8,55

8,52

8,62

9,917

8,217

M 10

0,75

9,65

9,62

9,70

9,188

9,424

M 10

1,00

9,55

9,52

9,62

8,917

9,217

M 10

1,25

9,40

9,36

9,47

8,647

8,982

M 11

0,75

10,65

10,62

10,70

10,188

10,424

M 11

1,00

10,55

10,52

10,62

9,917

10,217

M 12

1,00

11,55

11,52

11,62

10,917

11,217

M 12

1,25

11,40

11,36

11,47

10,647

10,982

M 12

1,50

11,30

11,26

11,38

10,376

10,751

M 14

1,00

13,55

13,52

13,62

12,917

13,217

M 14

1,25

13,40

13,36

13,47

12,647

12,982

M 14

1,50

13,30

13,26

13,38

12,376

12,751

M 15

1,00

14,55

14,52

14,62

13,917

14,217

M 15

1,50

14,30

14,26

14,38

13,376

13,751

M 16

1,00

15,55

15,52

15,62

14,917

15,217

M 16

1,50

15,30

15,26

15,38

14376

14,751

M 17

1,00

16,55

16,52

16,62

15,917

16,217

M 17

1,50

16,30

16,26

16,38

15,376

15,751

M 18

1,00

17,55

17,52

17,62

16,917

17,217

M 18

1,50

17,30

17,26

17,38

16,376

16,751

M 18

2,00

17,10

17,05

17,2

15,835

16,31

M 20

1,00

19,55

19,52

19,62

18,917

19,217

M 20

1,50

19,30

19,26

19,38

18,376

19,751

M 24

1,00

23,55

23,52

23,62

22,917

23,217

M 24

1,50

23,30

23,26

23,38

22,376

22,751

M 24

2,00

23,10

23,05

23,2

21,835

22,31

M 27

1,50

26,30

26,26

26,38

25,376

25,751

M 30

1,50

29,30

29,26

29,38

28,376

28,751

M 33

1,50

32,30

32,26

32,38

31,376

31,751

M 36

1,50

35,30

35,26

35,38

34,376

34,751

M 39

1,50

38,30

38,26

38,38

37,376

37,751

M 42

1,50

41,30

41,26

41,38

42,376

42,751

* M2,5x0,35 up to M4x0,35, ø predrill nut thread 6H

 

Metric Thread · (M) ISO DIN 13

Ø mm

Pitch P
mm

Ø Drill
mm

Ø Drill

Ø Predrill
nut thread 7H*

Min.
mm

Max.
mm

Min.
mm

Max.
mm

M 1

0,25

0,90

0,89

0,92

0,729

0,819

M 1,2

0,25

1,10

1,09

1,12

0,929

1,019

M 1,4

0,30

1,28

1,27

1,30

1,075

1,181

M 1,6

0,35

1,46

1,45

1,48

1,221

1,346

M 1,7

0,35

1,56

1,55

1,58

1,321

1,446

M 1,8

0,35

1,66

1,65

1,68

1,421

1,546

M 2

0,40

1,85

1,84

1,88

1,567

1,679

M 2,2

0,45

2,00

2,01

2,05

1,713

1,838

M 2,5

0,45

2,30

2,28

2,32

2,013

2,138

M 3

0,50

2,80

2,78

2,85

2,459

2,639

M 3,5

0,60

3,25

3,23

3,30

2,850

3,050

M 4

0,70

3,70

3,68

3,76

3,242

3,466

M 4,5

0,75

4,20

- - - -

M 5

0,80

4,65

4,62

4,71

4,134

4,384

M 6

1,00

5,55

5,52

5,62

4,917

5,217

M 7

1,00

6,55

6,52

6,62

5,917

6,217

M 8

1,25

7,40

7,36

7,47

6,647

6,982

M 9

1,25

8,40

8,36

8,47

7,647

7,982

M 10

1,50

9,30

9,26

9,38

8,376

8,751

M 11

1,50

10,30

10,26

10,38

9,376

9,751

M 12

1,75

11,20

11,15

11,29

10,106

10,531

M 14

2,00

13,10

13,05

13,20

11,835

12,310

M 16

2,00

15,10

15,05

15,20

13,835

14,310

M 18

2,50

16,90

16,83

17,02

15,294

15,854

M 20

2,50

18,90

18,83

19,02

17,294

17,854

M 22

2,50

20,90

20,83

21,02

19,294

19,854

M 24

3,00

22,70

22,62

22,80

20,752

21,382

M 27

3,00

25,70

25,62

25,80

23,752

24,382

M 30

3,50

28,50

28,40

28,60

26,211

26,921

M 33

3,50

31,50

31,40

31,60

29,211

29,921

M 36

4,00

34,30

34,17

34,40

31,670

32,420

M 39

4,00

37,30

37,17

37,40

34,670

35,420

M 42

4,50

40,10

39,95

40,20

37,129

37,979

* M1,1 up to M1,4, ø predrill nut thread 5h

 

Tolerance range for pre-drilling in forming threads - DIN 13

Due to the higher toughness of forming threads, the 7H tolerance is sufficient to achieve the correct fit of male and female threads, not less than 0.32xP.