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(Non-preferred) dimensions in parentheses.

Screws With Six Lobes Recessed Countersunk Head - Symbol FX

NF E 25-107 - 2007

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法国NF E25-107 - 2007 NF25-107 25-107NF Screws With Six Lobes Recessed Countersunk Head - Symbol FX
Screw Thread
d
M3 M4 M5 M6 M8 M10
P Pitch
b min
dk Theoretical max
Actual max
min
k max
Socket No.
t max
min
0.5 0.7 0.8 1 1.25 1.5
25 38 38 38 38 38
7.4 10.02 12 14.44 19.38 23
6.57 9.02 10.9 13.2 17.9 21.3
6.17 8.52 10.27 12.46 17.09 20.49
2.2 3.01 3.5 4.22 5.69 6.5
T10 T20 T25 T30 T45 T50
1.18 1.69 1.89 2.22 2.99 3.3
0.92 1.3 1.5 1.83 2.6 2.91