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(Non-preferred) dimensions in parentheses.

Unit:mm

High-Strength Structural Bolting Assemblies for Preloading - Part 7: System HR - Hexagon Nuts

EN 14399-7 (Hexagon Nuts) - 2018

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欧标EN 14399-7 (Hexagon Nuts) - 2018 EN143 High-Strength Structural Bolting Assemblies for Preloading - Part 7: System HR - Hexagon Nuts
Thread Size
D
M12 (M14) M16 (M18) M20 M22 M24 M27 M30 M36
P Pitch
da max
min
dw ① min
e min
m max
min
mw min
c max
min
s max
min
1.75 2 2 2.5 2.5 2.5 3 3 3.5 4
13 15.1 17.3 19.5 21.6 23.7 25.9 29.1 32.4 38.9
12 14 16 18 20 22 24 27 30 36
20.1 21.86 24.9 27.7 29.5 33.3 38 42.8 46.6 55.9
23.91 27.12 29.56 32.95 35.03 39.55 45.2 50.85 55.37 66.44
10.8 12.8 14.8 15.8 18 19.4 21.5 23.8 25.6 31
10.37 12.1 14.1 15.1 16.9 18.1 20.2 22.5 24.3 29.4
8.3 9.7 11.3 12.1 13.5 14.5 16.2 18.1 19.5 22.4
0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8
0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
22 24 27 30 32 36 41 46 50 60
21.16 23.16 26.16 29.16 31 35 40 45 49 58.8
①,dw (max) = s (actual)
②,For coated nuts the above dimensions apply prior to coating.

Alternative history

EN 14399-7 - 2007 EN 14399-7 - 2018
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