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DIN 34827 Standard Dimensions for Hexalobular socket set screws

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This standard specifies dimensions and technical delivery conditions for M3 to M24 hexalobular socket set screws. It comprises set screws with flat point, truncated cone point, dog point and cup point.

Dimensional Drawing and Technical Diagrams

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Key Dimensions and Technical Parameters

dimensions in mm - source DIN 34827
Publication date: 11/2016 Supercedes 11/2005
d thread size M 3 M 4 M 5 M 6 M 8 M 10 M 12 M 16 M 20 M 24
P 0.5 0.7 0.8 1 1.25 1.5 1.75 2 2.5 3
A 1.75 2.4 2.8 3.35 4.5 5.6 6.75 8.95 11.35 13.45
d1 min ≈ thread minor diameter
Hexalobular socket nr. 6 8 10 15 25 30 40 50 55 60
t max 0.95 1.2 1.55 1.9 3.1 3.3 3.6 4.75 5.75 5.75
t min 0.8 1 1.3 1.6 2.7 2.9 3.2 4.3 5.3 6.8

dimensions in mm - source DIN 34827
Publication date: 11/2005
d thread size M 3 M 4 M 5 M 6 M 8 M 10 M 12 M 16 M 20 M 24
P 0.5 0.7 0.8 1 1.25 1.5 1.75 2 2.5 3
d1 min ≈ thread minor diameter
Hexalobular socket nr. 6 8 10 15 25 30 40 50 55 60
A 1.75 2.4 2.8 3.35 4.5 5.6 6.75 8.95 11.35 13.45
t min 0.8 1 1.3 1.6 2.7 2.9 3.2 4.3 5.3 6.8

DIN 34827 - ≈ weigth in kg x1000 pcs, (ρ=7,85 kg/dm3) - commercial items
d thread size M 3 M 4 M 5 M 6 M 8 M 10 M 12 M 16 M 20 M 24
nominal length l
3 0.1
4 0.14 0.22
5 0.18 0.3 0.44
6 0.22 0.38 0.56 0.76
8 0.3 0.54 0.8 1.11 1.89
10 0.38 0.7 1.04 1.46 2.52 3.78
12 0.46 0.86 1.28 1.81 3.15 4.78 6.8
16 0.62 1.18 1.76 2.51 4.41 6.78 9.6 16.3
20 1.49 2.24 3.21 5.67 8.76 12.4 21.5 32.3
25 2.84 4.09 7.25 11.2 15.9 28 42.6 57
30 4.97 8.82 13.7 19.4 34.6 52.9 72
35 10.4 16.2 22.9 41.1 63.2 87
40 12 18.7 26.4 47.7 73.5 102
45 21.2 29.9 54.2 83.8 117
50 23.7 33.4 60.7 94.1 132
55 36.8 67.3 104 147
60 40.3 73.7 115 162

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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