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Click Specification

(Non-preferred) dimensions in parentheses.

Unit:mm

Hexagon Nuts with Flange

EN 1661 - 1997

Display drawing:

欧标EN 1661 - 1997 EN1661 1661EN Hexagon Nuts with Flange
Screw Thread
d
M5 M6 M8 M10 M12 (M14) M16 M20
P Pitch
c min
da min
max
dc max
dw min
e min
m max
min
mw min
s max
min
r max
0.8 1 1.25 1.5 1.75 2 2 2.5
1 1.1 1.2 1.5 1.8 2.1 2.4 3
5.00 6.00 8.00 10.0 12.0 14.0 16.0 20.0
5.75 6.75 8.75 10.8 13.0 15.1 17.3 21.6
11.8 14.2 17.9 21.8 26.0 29.9 34.5 42.8
9.8 12.2 15.8 19.6 23.8 27.6 31.9 39.9
8.79 11.05 14.38 17.77 20.03 23.36 26.75 32.95
5.0 6.0 8.00 10.00 12.00 14.00 16.0 20.0
4.7 5.7 7.64 9.64 11.57 13.3 15.3 18.7
2.5 3.1 4.6 5.9 6.8 7.7 8.9 10.7
8.00 10.00 13.00 16.00 18.00 21.00 24.00 30.00
7.78 9.78 12.73 15.73 17.73 20.67 23.67 29.16
0.3 0.36 0.48 0.6 0.72 0.88 0.96 1.2
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