Metric Thread Gage Pitch Diameters

(Tolerance Class 6 - Sizes M1.6 Through M14)

Thread Size
Plug Gage
Ring Gage
GO

Class 6H

NO GO

Class 6H

GO

Class 6g

NO GO

Class 6g

M1.6x0.35
1.373mm
1.458mm
1.354mm
1.291mm
M1.8x0.35
1.573mm
1.658mm
1.554mm
1.491mm
M2.0x0.40
1.740mm
1.830mm
1.721mm
1.654mm
M2.2x0.45
1.908mm
2.003mm
1.888mm
1.817mm
M2.50x0.35
2.273mm
2.358mm
2.254mm
2.191mm
M2.5x0.45
2.208mm
2.303mm
2.188mm
2.117mm
M3.0x0.35
2.773mm
2.863mm
2.754mm
2.687mm
M3.0x0.50
2.675mm
2.775mm
2.655mm
2.580mm
M3.5x0.35
3.273mm
3.363mm
3.254mm
3.187mm
M3.5x0.60
3.110mm
3.222mm
3.089mm
3.004mm
M4.0x0.50
3.675mm
3.775mm
3.655mm
3.580mm
M4.0x0.70
3.545mm
3.663mm
3.523mm
3.433mm
M4.5x0.50
4.175mm
4.275mm
4.155mm
4.080mm
M4.5x0.75
4.013mm
4.131mm
3.991mm
3.901mm
M5.0x0.50
4.675mm
4.775mm
4.655mm
4.580mm
M5.0x0.80
4.480mm
4,605mm
4.456mm
4.361mm
M5.5x0.50
5.175mm
5.275mm
5.155mm
5.080mm
M5.5x0.75
5.013mm
5.131mm
4.991mm
4.901mm
M6.0x0.75
5.513mm
5.645mm
5.491mm
5.391mm
M6.0x1.00
5.350mm
5.500mm
5.324mm
5.212mm
M7.0x0.75
6.513mm
6.645mm
6.491mm
6.391mm
M7.0x1.00
6.350mm
6.500mm
6.324mm
6.212mm
M8.0x0.75
7.513mm
7.645mm
7.491mm
7.391mm
M8.0x1.00
7.350mm
7.500mm
7.324mm
7.212mm
M8.0x1.25
7.188mm
7.348mm
7.160mm
7.042mm
M9.0x0.75
8.513mm
8.645mm
8.491mm
8.391mm
M9.0x1.00
8.350mm
8.500mm
8.324mm
8.212mm
M9.0x1.25
8.188mm
8.348mm
8.160mm
8.042mm
M10.0X0.75
9.513MM
9.645MM
9.491MM
9.391MM
M10.0X1.00
9.350MM
9.500MM
9.324MM
9.212MM
M10.0x1.25
9.188mm
9.348mm
9.160mm
9.042mm
M10.0x1.50
9.026mm
9.206mm
8.994mm
8.862mm
M11.0x0.75
10.513mm
10.645mm
10.491mm
10.391mm
M11.0x1.00
10.350mm
10.500mm
10.324mm
10.212mm
M11.0x1.50
10.026mm
10.206mm
9.994mm
9.862mm
M12.0x1.00
11.350mm
11.510mm
11.324mm
11.206mm
M12.0x1.25
11.188mm
11.368mm
11.160mm
11.028mm
M12.0x1.50
11.026mm
11.216mm
10.994mm
10.854mm
M12.0x1.75
10.863mm
11.063mm
10.829mm
10.679mm
M14.0x1.00
13.350mm
13.510mm
13.324mm
13.206mm
M14.0x1.25
13.188mm
13.368mm
13.160mm
13.028mm
M14.0x1.50
13.026mm
13.216mm
12.994mm
12.854mm
M14.0x2.00
12.701mm
12.913mm
12.663mm
12.503mm
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