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UNI 6955 Standard Dimensions for Tapping screws, cross recessed countersunk flat head

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This norm has been cancelled

Tapping screws, cross recessed countersunk flat head

Dimensional Drawing and Technical Diagrams

1210_tzwpNb_uni-6955.jpg

Key Dimensions and Technical Parameters

Dimensions in mm - source UNI 6955Withdrawn
Publication date: 11/1978
Ø thread size
P
dk max.
 dk min
k max.
recess No.
 m type H m type Z
y type C
 y type F
2.2
0.8
 4.3 4 1.3 1 2.5 2.4
2
 1.6
2.9
1.1
 5.5 5.2 1.7
1
 3 2.8
2.6
 2.1
3.5
1.3
 6.8 6.44 2.1
2
 4.2 4
3.2
 2.5
3.9 1.3 7.5 7.14 2.3 2 4.6 4.2
4.2
1.4
 8.1 7.74 2.5 2 4.7 4.4 3.7 2.8
4.8
1.6
 9.5 9.14 3 2 5.1 5 5 3.2
5.5
1.8
 10.8 10.37 3.4
3
 6.8 6.3
5
 3.6
6.3
1.8
 12.4 11.97 3.8 3 7.1 7 6 3.6

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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