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ISO 7414 Standard Dimensions for Hexagon nuts with large widths across flats for high strength structural bolting

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Hexagon Nuts For Structural Bolting With Large Width Across Flats,Style 1-Product Grade B.

THe norm specifies series with metric dimensions and thread sizes from M12 up to including M 36; tabulates general dimensions, specifications and reference standards, proof load values, screw thread limits for tolerance class 6AZ, and for testing nut rotation requirements; gives an example for the designation.

 

Dimensional Drawing and Technical Diagrams

2006_nfrxxB_ISO-7414.jpg

Key Dimensions and Technical Parameters

Dimensions in mm - source ISO 1984 Withdrawn
Publication date: 11 - 1984
d thread size P s dw e min m c
max min min max min max
M 12 1.75 21 20.16 19.2 22.78 10.37 10.8 0.15 0.6
M 16 2 27 26.16 24.9 29.56 14.1 14.8 0.2 0.8
M 20 2.5 34 33 31.4 37.29 16.9 18 0.2 0.8
M 22 2.5 36 35 33.3 39.55 18.1 19.4 0.2 0.8
M 24 3 41 40 38 45.2 20.2 21.5 0.2 0.8
M 27 3 46 45 42.8 50.85 22.5 23.8 0.2 0.8
M 30 3.5 50 49 46.5 55.37 24.3 25.6 0.2 0.8
M 36 4 60 58.8 55.9 66.44 31 29.4 0.2 0.8

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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