Dimensions in Table

Table 16.4

Nominal size D

M3

M4

M5

M6

M8

M10

M12

Head diameter A

5.5

7.5

9.5

10.5

14

18

21

Head depth H

1.6

2.1

2.7

3.2

4.3

5.3

6.4

Key engagement K

2

2.5

3

4

5

6

8

Socket size J

1.04

1.3

1.56

2.08

2.6

3.12

4.16

Fillet radius

F-minimum

0.1

0.2

0.2

0.25

0.4

0.4

0.6

da-maximum

3.6

4.7

5.7

6.8

9.2

11.2

14.2

S

0.38

0.38

0.5

0.8

0.8

0.8

0.8

- Q ,

' « , "D

K-». H »

F

Fig. 16.7

and the minimum head angle of 90°. The minimum head size is controlled by a minimum head diameter, the maximum head angle of 92° and a flushness tolerance. The edge of the head may be flat, as shown in Fig. 16.8, or rounded but not sharp edged (see below).

Minimum profile

Fig. 16.8 ISO metric hexagon socket set screws. Dimensions in Table 16.6

Sharp corners removed -

Maximum profile

Minimum profile

Fig. 16.8 ISO metric hexagon socket set screws. Dimensions in Table 16.6

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