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DIN 797 Standard Dimensions for Special foundation bolts

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This standard DIN 797 specifies properties for sizes M24 to M100 x 6 special foundation bolts. Specifications for special foundation nuts are given in DIN 798

Dimensional Drawing and Technical Diagrams

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Key Dimensions and Technical Parameters

Dimensions in mm - source DIN 797
Publication date 11 - 2009 - Supersedes DIN 797: 11 - 1970
d1 thread size M 24 M 30 M 36 M 42 M 48 M 56 M 64 M 72X6 M 80X6 M 90X6 M 100X6
b1 75 85 95 105 120 140 155 170 185 205 225
b2 110 120 140 150 160 170 190 200 220 240 260
d2 - - - 34 38 45 50 55 65 70 80
d3 - - M 12 M 12 M 12 M 16 M 16 M 16 M 20 M 20 M 20
t - - 22 22 22 26 26 26 33 33 33
z2 14 18 22 25 28 32 36 40 45 50 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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