Metric Half Nut Chart

Diameters & thickness expressed in millimeters  ​​

Metric Half Nuts 

 ​​Size 
 
M3
M4
M5
M6
M8
M10
M12
M14
M16
M18
M20
M24
M30
 Across Flats 
 
5.5
7
8
10
13
17
19
22
24
27
30
36
46

 Across Points 
 
6.1
7.66
8.76
11.05
14.38
18.9
21.1
24.49
26.75
29.56
32.95
39.55
​50.85
 Thickness
 
1.8
2.2
2.7
3.7
5
6
7
8
8
9
9
10
​12

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