ISO 7379

Hexagon socket head shoulder screws

tech-iso7379


Thread Size
d		 M5 M6 M8 M10
P Pitch 0.8 1 1.25 1.5
ds Nominal Size f9 tolerance 6.5 8 10 13
max 6.487 7.987 9.987 12.984
min 6.451 7.951 9.951 12.941
b max 9.75 11.25 13.25 16.4
min 9.25 10.75 12.75 15.6
dk For plain heads max 10 13 16 18
knurled heads max 10.22 13.27 16.27 18.27
min 9.78 12.73 15.73 17.73
k max 4.5 5.5 7 9
min 4.32 5.32 6.78 8.78
s Nominal Size 3 4 5 6
max 3.08 4.095 5.095 6.095
min 3.02 4.02 5.02 6.02
t min 2.4 3.3 4.2 4.9
g1 max 2.5 2.5 2.5 2.5
g2 max 2 2.5 3.1 3.7
ds1 max 3.86 4.58 6.25 7.91
min 3.68 4.4 6.03 7.69
e min 3.44 4.58 5.72 6.86
r min 0.25 0.4 0.6 0.6

Thread Size
d		 M12 M16 M20
P Pitch 1.75 2 2.5
ds Nominal Size f9 tolerance 16 20 25
max 15.984 19.98 24.98
min 15.941 19.928 24.928
b max 18.4 22.4 27.4
min 17.6 21.6 26.6
dk For plain heads max 24 30 36
knurled heads max 24.33 30.33 36.39
min 23.67 29.67 35.61
k max 11 14 16
min 10.73 13.73 15.73
s Nominal Size 8 10 12
max 8.115 10.115 12.142
min 8.025 10.025 12.032
t min 6.6 8.8 10
g1 max 2.5 2.5 3
g2 max 4.4 5 6.3
ds1 max 9.57 13.33 16.57
min 9.35 12.96 16.3
e min 9.15 11.43 13.72
r min 0.6 0.8 0.8



*adjusting shank tolerance:
․ steel h8 or f9
․ stainless steel f9
**on stock Ø12, standard value Ø13
***not standardized dimensions


All information is strictly informative