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NF E25-660 Standard Dimensions for Tapping screws, contersunk slotted flat head

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This norm has been cancelled

Tapping screws, countersunk slotted flat head

Dimensional Drawing and Technical Diagrams

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Key Dimensions and Technical Parameters

Dimensions in mm - source NF E25-660 Withdrawn
Publication date: 12/1984
Ø
 P
dk max
 dk min
k max
t min
 t max
n min
 n max
ST 2.2
 0.8 3.8 3.5 1.1 0.4 0.6 0.56 0.7
ST 2.9
 1.1 5.5 5.2 1.7 0.6 0.85 0.86 1
ST 3.5
 1.3 7.3 6.9 2.35 0.9 1.2 1.06 1.2
ST 4.2
 1.4 8.4 8 2.6 1 1.3 1.26 1.51
ST 4.8
 1.6 9.3 8.9 2.8 1.1 1.4 1.26 1.51
ST 5.5
 1.8 10.3 9.9 3 1.1 1.5 1.66 1.91
ST 6.3
 1.8 11.3 10.9 3.15 1.2 1.6 1.66 1.91
ST 8 2.1 15.8 15.4 4.65 1.8 2.3 2.06 2.31
ST 9.5 2.1 18.3 17.8 5.25 2 2.6 2.56 2.81

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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