DIN 7985

Recessed raised cheese (fillister) head screws

tech-din7985




Thread Size
d		 M1.6 M2 M2.5 M3
P Pitch 0.35 0.4 0.45 0.5
a max 0.7 0.8 0.9 1
b min 15 16 18 19
dk max=nominal size 3.2 4 5 6
min 2.9 3.7 4.7 5.7
k Nominal Size 1.3 1.6 2 2.4
max 1.42 1.72 2.12 2.52
min 1.18 1.48 1.88 2.28
r min 0.1 0.1 0.1 0.1
h ≈ 0.8 1.1 1.3 1.6
x max 0.9 1 1.1 1.25
Socket No. 0 1 1 1
M1 ≈ 1.8 2.5 2.7 3.1
M2 ≈ 1.8 2.4 2.6 3
Length of Thread b 15 16 18 19

Thread Size
d		 (M3.5) M4 M5
P Pitch 0.6 0.7 0.8
a max 1.2 1.4 1.6
b min 20 22 25
dk max=nominal size 7 8 10
min 6.64 7.64 9.64
k Nominal Size 2.7 3.1 3.8
max 2.82 3.25 3.95
min 2.58 2.95 3.65
r min 0.2 0.2 0.2
h ≈ 1.9 2 2.5
x max 1.5 1.75 2
Socket No. 2 2 2
M1 ≈ 4.2 4.6 5.3
M2 ≈ 4 4.3 5
Length of Thread b 20 22 25

Thread Size
d		 M6 M8 M10
P Pitch 1 1.25 1.5
a max 2 2.5 3
b min 28 34 40
dk max=nominal size 12 16 20
min 11.57 15.57 19.48
k Nominal Size 4.6 6 7.5
max 4.75 6.15 7.68
min 4.45 5.85 7.32
r min 0.25 0.4 0.4
h ≈ 3 3.7 4.8
x max 2.5 3.2 3.8
Socket No. 3 4 4
M1 ≈ 6.8 9 10.2
M2 ≈ 6.7 8.8 9.9
Length of Thread b 28 34 40



All information is strictly informative