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NF E25-137 Standard Dimensions for Hexagon head screws fully threaded

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This norm has been cancelled

Hexagon head screws with slot, grade A - Symbol HS. This standard defines multi-drive machine screws allowing assembly-disassembly of the product via an outer hexagon or slot. These short screws are often used for reasons of difficult accessibility, or for 'general public' uses. They are infrequently kept in stock.

Dimensional Drawing and Technical Diagrams

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Key Dimensions and Technical Parameters

NF E25-137Withdrawn

Dimensions in mm -hex head screws with slot

Publication date: 12 - 1986
d thread size P k max k min e min s nom t min n max n min
M 3 0.5 2.12 1.88 6.01 5.5 0.8 1 0.86
M 4 0.7 2.92 2.68 7.66 7 1.2 1.51 1.26
M 5 0.8 3.65 3.35 8.79 8 1.5 1.51 1.26
M 6 1 4.15 3.85 11.05 10 1.8 1.91 1.66
M 8 1.25 5.45 5.15 14.38 13 2.2 2.31 2.06
M 10 1.5 6.58 6.22 17.77 16 2.6 2.81 2.56

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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