ISO7380 button head screws

Head Diameter

Head Height

Head Side
Height

Hexagon Socket
Size

Key
Engagement

Min.

Max.

Min.

Max.

M3 x 0.5

5.4

5.7

1.43

1.65

0.38

2

1.04

M4 x 0.7

7.24

7.6

1.95

2.2

0.38

2.5

1.3

M5 x 0.8

9.14

9.5

2.5

2.75

0.5

3

1.56

M6 x 1

10.07

10.5

3

3.3

0.8

4

2.08

M8 x 1.25

13.57

14

4.05

4.4

0.8

5

2.6

M10 x 1.5

17.07

17.5

5.2

5.5

0.8

6

3.12

M12 x 1.75

20.48

21

6.24

660

0.8

8

4.16

M16 x 2

27.48

28

8.44

8.8

1.5

10

5.2

Wall Thickness

Under Head Fillet
Transition Diameter

Transition
Length

Juncture Radius

Maximum Standard Length

Min.

Min.

Max.

Max.

Min.

Nom

M3 x 0.5

0.2

3.2

3.6

0.51

0.1

12

M4 x 0.7

0.3

4.4

4.7

0.6

0.2

20

M5 x 0.8

0.38

5.4

5.7

0.6

0.2

30

M6 x 1

0.74

6.5

6.8

0.68

0.25

30

M8 x 1.25

1.05

8.8

9.2

1.02

0.4

40

M10 x 1.5

1.45

10.8

11.2

1.02

0.4

40

M12 x 1.75

1.63

13.2

14.2

1.87

0.6

60

M16 x 2

2.25

17.2

18.2

1.87

0.6

60