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DIN 6880 Standard Dimensions for Bright key steel

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This standard DIN 6880 applies for bright key steel (bright steel for the manufacturing of keys and parallel keys) in bars with square, rectangular or flat rectangular cross-sections and is an important basis for production quality of these steel products.

Dimensional Drawing and Technical Diagrams

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Key Dimensions and Technical Parameters

Dimensions in mm - source DIN 6880

Publication date: 06/2011 supersedes DIN 6880 04/1975
Form Nominal size r min r max ≈ weigth in kg/m
square 2 x 2 0.15 0.35 0.0314
3 x 3 0.15 0.35 0.0707
4 x 4 0.15 0.35 0.126
5 x 5 0.2 0.4 0.196
6x 6 0.2 0.4 0.283
7 x 7 0.2 0.4 0.385
8 x 8 0.2 0.4 0.503
10 x 10 0.4 0.6 0.785
12 x 12 0.4 0.6 1.13
14 x 14 0.4 0.6 1.54
16 x 16 0.4 0.6 2.01
18 x 18 0.4 0.6 2.54
20 x 20 0.6 0.8 3.14
22 x 22 0.6 0.8 3.8
rectangular 8 x 7 0.2 0.2 0.44
10 x 8 0.4 0.6 0.628
12 x 8 0.4 0.6 0.754
12 x 10 0.4 0.6 0.943
14 x 9 0.4 0.6 0.989
16 x 10 0.4 0.6 1.26
18 x 11 0.4 0.6 1.55
20 x 12 0.6 0.8 1.88
22 x 14 0.6 0.8 2.42
25 x 14 0.6 0.8 2.75
25 x 22 0.6 0.8 4.32
28 x 16 0.6 0.8 3.52
28 x 25 0.6 0.8 5.5
32 x 18 0.6 0.8 4.52
32 x 30 0.6 0.8 7.54
36 x 20 1 1.2 5.65
36 x 34 1 1.2 9.61
40 x 22 1 1.2 6.91
40 x 38 1 1.2 11.9
45 x 25 1 1.2 8.83
45 x 43 1 1.2 15.2
50 x 28 1 1.2 11
50 x 48 1 1.2 18.8
56 x 32 1.6 2 14.1
63 x 32 1.6 2 15.8
70 x 36 1.6 2 19.8
80 x 40 2.5 3 25.1
90 x 45 2.5 3 31.8
100 x 50 2.5 3 39.3
flat-rectangular 5 x 3 0.2 0.4 0.118
6 x 4 0.2 0.4 0.188
7 x 4 0.2 0.4 0.22
8 x 5 0.2 0.4 0.314
10 x 6 0.4 0.6 0.471
12 x 6 0.4 0.6 0.565
14 x 6 0.4 0.6 0.659
16 x 7 0.4 0.6 0.879
18 x 7 0.4 0.6 0.989
20 x 8 0.6 0.8 1.26
22 x 9 0.6 0.8 1.55
25 x 9 0.6 0.8 1.77
29 x 10 0.6 0.8 2.2
32 x 11 0.6 0.8 2.76
36 x 12 1 1.2 3.39
40 x 14 1 1.2 4.4

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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