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UNI 5730 Standard Dimensions for Round cup head nib bolts

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This standard DIN 607 specifies properties for sizes M8 to M16 cup head nib bolts of product grade C.

Dimensional Drawing and Technical Diagrams

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Key Dimensions and Technical Parameters

Dimensions in mm - source UNI 5730
Publication date 12 - 1965

d thread size

 M 5 M 6 M 8 M 10 M 12 M 14 M 16 M 18 M 20 M 22 M 24
P 0.8 1 1.25 1.5 1.75 2 2 2.5 2.5 2.5 3
b (l<=125) 16 18 22 26 30 34 38 42 46 50 54
b (l>125<=200) - - - - 36 40 44 48 52 56 60
dk max 9 11 15 18 21 23 26 30 33 35 40
k nom 3.5 4 6 7 8.5 9 10.5 12 13 14 16
g max 1.5 2 2.5 3 3 3.5 4 4 4.5 5 5.5
i min 1.3 1.8 2.3 2.7 2.7 3.3 3.5 3.8 4.2 4.8 5.2

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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