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BS 4174 22 Standard Dimensions for Hammer drive screws with round head

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Hammer drive screws with round head

Dimensional Drawing and Technical Diagrams

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Key Dimensions and Technical Parameters

Dimensions in mm - source BS 4174
Publication date 05/1972
size d max d min d2 max d2 min d1 max d1 min k max k min
00 1.52 1.45 1.24 1.17 2.51 2.29 0.86 0.66
0 1.90 1.83 1.60 1.52 3.22 3.00 1.24 1.04
2 2.54 2.46 2.11 2.03 4.11 3.71 1.75 1.50
4 2.95 2.84 2.44 2.34 5.36 4.90 2.18 1.90
6 3.56 3.45 2.95 2.84 6.60 6.10 2.62 2.31
7 3.91 3.81 3.20 3.10 7.24 6.70 2.82 2.51
8 4.24 4.11 3.45 3.85 7.85 7.29 3.05 2.72
10 4.62 4.50 3.81 3.71 9.12 8.48 3.48 3.12
12 5.38 5.23 4.50 4.39 10.36 9.70 3.89

3.53

L<3.2, S = 0,5 mm , 3.2 ≤L<4, S=0.9mm , 4.5≤L<8,S=1.2 mm ; 9.l5≤L<13;S=1.6 mm 16≤l<22,S=2 mm L>25 , S=3,2 mm .

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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