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JIS B1301-1-1996
Rectangular key-Table 1
Nom
b max
b min
h max
h min
c max
c min
2x2
2
1.975
2
1.975
0.25
0.16
3x3
3
2.975
3
2.975
0.25
0.16
4x4
4
3.97
4
3.97
0.25
0.16
5x5
5
4.97
5
4.97
0.4
0.25
6x6
6
5.97
6
5.97
0.4
0.25
7x7
7
6.964
7
6.964
0.4
0.25
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