ISO 10642

Replaces DIN 7991

Hex socket countersunk head screws

tech-iso10642




Screw Thread
d		 M3 M4 M5 M6
P Pitch 0.5 0.7 0.8 1
dk Theoretical max 6.72 8.96 11.2 13.44
Actual min 5.54 7.53 9.43 11.34
ds max 3 4 5 6
min 2.86 3.82 4.82 5.82
e① min 2.303 2.873 3.443 4.583
k max 1.86 2.48 3.1 3.72
s Nominal Size 2 2.5 3 4
max 2.08 2.58 3.08 4.095
min 2.02 2.52 3.02 4.02
t min 1.1 1.5 1.9 2.2
Minimum tensile load(N)-8.8② 3220 5620 9080 12900
Minimum tensile load(N)-10.9② 4180 7300 11800 16700
Minimum tensile load(N)-12.9② 4910 8560 13800 19600
Length of Thread
b		 L≤125 12 14 16 18
125＜L ≤ 200 / / / 24
L＞200 / / / /

Screw Thread
d		 M8 M10 M12
P Pitch 1.25 1.5 1.75
dk Theoretical max 17.92 22.4 26.88
Actual min 15.24 19.22 23.12
ds max 8 10 12
min 7.78 9.78 11.73
e① min 5.723 6.863 9.149
k max 4.96 6.2 7.44
s Nominal Size 5 6 8
max 5.14 6.14 8.175
min 5.02 6.02 8.025
t min 3 3.6 4.3
Minimum tensile load(N)-8.8② 23400 37100 53900
Minimum tensile load(N)-10.9② 30500 48200 70200
Minimum tensile load(N)-12.9② 35700 56600 82400
Length of Thread
b		 L≤125 22 26 30
125＜L ≤ 200 28 32 36
L＞200 / 45 49

Screw Thread
d		 (M14) M16 M20
P Pitch 2 2 2.5
dk Theoretical max 30.8 33.6 40.32
Actual min 26.52 29.01 36.05
ds max 14 16 20
min 13.73 15.73 19.67
e① min 11.429 11.429 13.716
k max 8.4 8.8 10.16
s Nominal Size 10 10 12
max 10.175 10.175 12.212
min 10.025 10.025 12.032
t min 4.5 4.8 5.6
Minimum tensile load(N)-8.8② 73600 100000 162000
Minimum tensile load(N)-10.9② 96000 130000 204000
Minimum tensile load(N)-12.9② 112000 154000 239000
Length of Thread
b		 L≤125 34 38 46
125＜L ≤ 200 40 44 52
L＞200 53 57 65



dimensions for countersink A DIN 74
*dimensions acc.to DIN 7991


All information is strictly informative