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DIN 97 Standard Dimensions for Slotted flat head wood screws

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Slotted flat head wood screws

This standard DIN 97 specifies the characteristics of slotted countersunk (flat) head wood screws for thread diameters between 1,6 mm to 10 mm.

Dimensional Drawing and Technical Diagrams

33_eTcWXO_din-97.jpg

Key Dimensions and Technical Parameters

Dimensions in mm - source DIN 97

Publication date: 12/2016 - Supersedes DIN 97: 12/2010
thread size d1 max=nom D nom
k max
t min
 t max
n nom
1.6 1.6 3 0.96 0.32 0.45 0.4
2 2 3.8 1.2 0.4 0.6 0.5
2.5
 2.5
4.7
1.5
 0.5 0.7
0.6
3
 3
5.6
1.65
 0.6 0.85
0.8
3.5
 3.5
6.5
1.93
 0.7 1
0.8
4
 4
7.5
2.2
 0.8 1.1
1
4.5
 4.5
8.3
2.35
 0.9 1.2
1
5
 5
9.2
2.5
 1 1.3
1.2
5.5
 5.5
10.2
2.75
 1.1 1.4
1.2
6
 6 11
3
 1.2 1.6
1.6
7 7 12.5 3.5 1.4 1.9 2
8
 8
14.5
4
 1.6 2.1
2
10 10 18 5 2 2.6 2.5

Dimensions in mm - source DIN 97

Publication date: 12/2010 - Supersedes DIN 97: 12/1986
thread size d1 max=nom D nom
k max
t min
 t max
n nom
1.6 1.6 3 0.96 0.32 0.45 0.4
2 2 3.8 1.2 0.4 0.6 0.5
2.5
 2.5
4.7
1.5
 0.5 0.7
0.6
3
 3
5.6
1.65
 0.6 0.85
0.8
3.5
 3.5
6.5
1.93
 0.7 1
0.8
4
 4
7.5
2.2
 0.8 1.1
1
4.5
 4.5
8.3
2.35
 0.9 1.2
1
5
 5
9.2
2.5
 1 1.3
1.2
5.5
 5.5
10.2
2.75
 1.1 1.4
1.2
6
 6 11
3
 1.2 1.6
1.6
7 7 12.5 3.5 1.4 1.9 2
8
 8
14.5
4
 1.6 2.1
2
10 10 18 5 2 2.6 2.5

DIN 97: 12/1986 Approximate mass, in kg x1000 pcs, (ρ=7,85 kg/dm3) - X commercial sizes
thread size
1.6
2
2.5
3
3,5
4
4.5
5
5.5
6
7
8
 10
nominal length l
8 X 0.216 0.312
10 X 0.259 0.372 0.604 0.789
12 X 0.302 0.432 0.696 0.914 1.18
14 X 0.344 0.492 0.789 1.042 1.335
16 X 0.387 0.552 0.881 1.17 1.49 1.85 2.31
18 0.436 0.612 0.971 1.889 1.64 2.04 2.55
20 0.484 0.672 1.06 1.43 1.79 2.22 2.78 X 4.12
25 0.822 1.30 1.73 2.17 2.71 3.37 X 4.96
30 0.972 1.54 2.04 2.55 3.19 4 X 5.80
35 1.77 2.35 2.94 3.68 4.55 X 6.63
40 2.01 2.66 3.32 4.17 5.14 X 7.46 X 13.4 X
45 2.96 3.66 4.65 5.73 X 8.29 X 15 X
50 3.29 4.05 5.14 6.32 X 9.12 X 16.5 X
60 3.91 4.81 6.11 7.54 X 10.8 X 19.6 X
70 8.72 X 12.5 X 22.7 X
80 9.9 X 14.3 X 25.7 X

Reproduced by permission of DIN Deutsches Institut für Normung e. V. The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from Beuth Verlag GmbH, Burggrafenstraße 6, 10787 Berlin, Germany.
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