## ISO metric hexagon socket set screws Dimensions in Table

These screws are available with a variety of pointed ends. In all cases the overall length includes the chamfer at the socket end and the point.

Table 16.5

Nominal size D M3 M4 M5 M6 M8 M10 M12 M16 M20

A - maximum 6.72 8.96 11.2 13.44 17.92 22.4 26.88 33.6 40.32

B - minimum 5.82 7.78 9.78 11.73 15.73 19.67 23.67 29.67 35.61

Head depth H 1.86 2.48 3.1 3.72 4.96 6.2 7.44 8.8 10.16

Key engagement K 1.05 1.49 1.86 2.16 2.85 3.60 4.35 4.89 5.49

 Nominal size D M3 M4 M5 M6 M8 M10 M12 M16 M20 Socket size J 1.5 2 2.5 3 4 5 6 8 10 Key engagement K 1.2 1.6 2 2.4 3.2 4 4.8 6.4 8 Dog point diameter P 2 2.5 3.5 4.5 6 7 9 12 15 Dog point length Q 0.88 1.12 1.38 1.62 2.12 2.62 3.12 4.15 5.15 Cup point and 'W' point diameter C 1.4 2 2.5 3 5 6 8 10 14

Note: The cone point angle shown as Y° is generally 118° for short screws and 90° for longer lengths.

Note: The cone point angle shown as Y° is generally 118° for short screws and 90° for longer lengths.

90°

Fig. 16.9 (a) Cone point (b) Dog point (c) W point (d) Cup point

Fig. 16.9 (a) Cone point (b) Dog point (c) W point (d) Cup point

Fig. 16.10 Typical GKN socket screws and wrench

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### Responses

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