DIN 7984

Hexagon Socket Head Cap Screws with Low Head

tech-din7984




Thread Size
d		 M3 M4 M5 M6
P Pitch 0.5 0.7 0.8 1
Length of Thread
b		 L≤125 12 14 16 18
125＜L≤200 / / / /
L＞200 / / / /
dk max=nominal size 5.5 7 8.5 10
min 5.32 6.78 8.28 9.78
ds max=nominal size 3 4 5 6
min 2.86 3.82 4.82 5.82
k max=nominal size 2 2.8 3.5 4
min 1.86 2.66 3.32 3.82
s Nominal Size 2 2.5 3 4
max 2.1 2.6 3.1 4.12
min 2.02 2.52 3.02 4.02
t Nominal Size 1.5 2.3 2.7 3
max 1.62 2.42 2.82 3.12
min 1.38 2.18 2.58 2.88
e min 2.3 2.87 3.44 4.58

Thread Size
d		 M8 M10 M12
P Pitch 1.25 1.5 1.75
Length of Thread
b		 L≤125 22 26 30
125＜L≤200 28 32 36
L＞200 / / /
dk max=nominal size 13 16 18
min 12.73 15.73 17.73
ds max=nominal size 8 10 12
min 7.78 9.78 11.73
k max=nominal size 5 6 7
min 4.82 5.82 6.78
s Nominal Size 5 7 8
max 5.14 7.175 8.175
min 5.02 7.025 8.025
t Nominal Size 3.8 4.5 5
max 3.95 4.65 5.15
min 3.65 4.35 4.85
e min 5.72 8.01 9.15

Thread Size
d		 (M14) M16 (M18)
P Pitch 2 2 2.5
Length of Thread
b		 L≤125 34 38 42
125＜L≤200 40 44 48
L＞200 / 57 61
dk max=nominal size 21 24 27
min 20.67 23.67 26.67
ds max=nominal size 14 16 18
min 13.73 15.73 17.73
k max=nominal size 8 9 10
min 7.78 8.78 9.78
s Nominal Size 10 12 12
max 10.175 12.212 12.212
min 10.025 12.032 12.032
t Nominal Size 5.3 5.5 6.5
max 5.45 5.65 6.68
min 5.15 5.35 6.32
e min 11.43 13.72 13.72

Thread Size
d		 M20 (M22) M24
P Pitch 2.5 2.5 3
Length of Thread
b		 L≤125 46 50 54
125＜L≤200 52 56 60
L＞200 65 69 73
dk max=nominal size 30 33 36
min 29.67 32.61 35.61
ds max=nominal size 20 22 24
min 19.67 21.67 23.67
k max=nominal size 11 12 13
min 10.73 11.73 12.73
s Nominal Size 14 14 17
max 14.212 14.212 17.23
min 14.032 14.032 17.05
t Nominal Size 7.5 8 8
max 7.68 8.18 8.18
min 7.32 7.82 7.82
e min 16 16 19.44



b1 for L ≤ 125 mm
b2 for L ≤ 200 mm
b3 for L > 200 mm


All information is strictly informative