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DIN EN ISO 7050 Standard Dimensions for Tapping screws, cross recessed countersunk flat head

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Tapping screws, cross recessed countersunk flat head

This standard DIN EN ISO 7050 specifies the characteristics of cross-recessed countersunk flat head tapping screws with thread sizes from ST 2,2 to ST 9,5 inclusive.

Dimensional Drawing and Technical Diagrams

273_1891.jpg

Key Dimensions and Technical Parameters

Dimensions in mm - source DIN EN ISO 7050

Pubblication date: 11/2011 Superdedes DIN ISO 7050 08/1990
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
 3.8 3.5 1.1 0 1.9 2
2
 1.6
2.9
1.1
 5.5 5.2 1.7
1
 3.2 3
2.6
 2.1
3.5
1.3
 7.3 6.9 2.35
2
 4.4 4.1
3.2
 2.5
4.2
1.4
 8.4 8 2.6 4.6 4.4 3.7 2.8
4.8
1.6
 9.3 8.9 2.8 5.2 4.9 5 4.3
5.5
1.8
 10.3 9.9 3
3
 6.6 6.3
5
 3.6
6.3
1.8
 11.3 10.9 3.15 6.8 6.6 6
3.6
8 2.1 15.8 15.4 4.65 4 8.9 8.8 7.5 4.2
9.5 2.1 18.3 17.8 5.25 4 10 9.8 8 4.2

DIN EN ISO 7050 - commercial lengths
thread size ST 2.2 ST 2.9 ST 3.5 ST 4.2 ST 4.8 ST 5.5 ST 6.3 ST 8 ST 9.5
nominal length l
4.5 X
6.5 X X
9.5 X X X X X
13 X X X X X X X
16 X X X X X X X X X
19 X X X X X X X X
22 X X X X X X X
25 x X X X X X X
32 x X X X X X
38 x X X X
45 X X
50 X X

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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