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DIN 7973 Standard Dimensions for Tapping screws, slotted countersunk raised head

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Technical History and International Equivalents of DIN 7973

This norm has been cancelled
This norm has been replaced by DIN EN ISO 1483

Tapping screws, slotted raised head 

Dimensional Drawing and Technical Diagrams

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Key Dimensions and Technical Parameters

Dimensions in mm - source DIN 7973Withdrawn

Publication date: 08 - 1990
Ø thread size
 P
dk max
 dk min
k max
t max
 t min
n max
 n min
ST 2.2
 0.8 4.3 4 1.3 1.15 0.95 0.6 0.66
ST 2.9
 1.1 5.5 5.2 1.7 1.5 1.25 0.8 0.86
ST 3.5
 1.3 6.8 6.44 2.1 1.9 1.55 1 1.06
ST 3.9
 1.3 7.5 7.14 2.3 2.05 1.7 1 1.06
ST 4.2
 1.4 8.1 7.74 2.5 2.25 1.85 1.2 1.26
ST 4.8
 1.6 9.5 9.14 3 2.6 2.15 1.2 1.26
ST 5.5
 1.8 10.8 10.37 3.4 2.95 2.45 1.6 1.66
ST 6.3
 1.8 12.4 11.97 3.8 3.45 2.85 1.6 1.66

DIN 7973 - ≈ weigth, in kg x1000 pcs, (ρ=7,85 kg/dm3) - commercial lengths
thread size ST 2 ST 2.9 ST 3.5 ST 3.9 ST 4.2 ST 4.8 ST 5.5 ST 6.3
nominal length l
6.5 0.18 0.33
9.5 0.24 0.44 0.721 0.888 1.07 1.53
13 0.31 0.566 0.898 1.11 1.32 1.88 2.74 3.46
16 0.37 0.674 1.05 1.3 1.53 2.18 3.12 4
19 0.782 1.2 1.49 1.74 2.48 3.51 4.54
22 1.35 1.68 1.95 2.78 3.89 5.08
25 1.51 1.87 2.16 3.08 40.28 5.62
32 2.65 3.78 5.19 5.88
38 4.38 5.97 7.96

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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