ASME B18.16.3M Prevailing Torque Metric Hex Flange Nuts
Dimensions of Prevailing Torque Metric Hex Flange Nuts
Nominal Diameter and Thread Pitch |
Width Across Flats, S |
Width Across Corners, E |
Thickness M (All Nut Property Classes) |
Flange Diameter, Dc, Max |
Bearing Circle Diameter, Dw, Min |
Flange Edge Thickness, C, Min |
Flange Top Fillet Radius, R, Max |
All Metal Type |
Top Insert Type |
Max |
Min |
Max |
Min |
Max |
Min |
Max |
Min |
M6 x 1 |
10.00 |
9.78 |
11.55 |
11.05 |
7.30 |
5.70 |
8.80 |
8.00 |
14.2 |
12.2 |
1.1 |
0.4 |
M8 x 1.25 |
13.00 |
12.73 |
15.01 |
14.38 |
9.40 |
7.60 |
10.70 |
9.70 |
17.9 |
15.8 |
1.2 |
0.5 |
M10 x 1.5 |
15.00 |
14.73 |
17.32 |
16.64 |
11.40 |
9.60 |
13.50 |
12.50 |
21.8 |
19.6 |
1.5 |
0.6 |
M12 x 1.75 |
18.00 |
17.73 |
20.78 |
20.03 |
13.80 |
11.60 |
16.10 |
15.10 |
26.0 |
23.8 |
1.8 |
0.7 |
M14 x 2 |
21.00 |
20.67 |
24.25 |
23.35 |
15.90 |
13.30 |
18.20 |
17.00 |
29.9 |
27.6 |
2.1 |
0.9 |
M16 x 2 |
24.00 |
23.67 |
27.71 |
26.75 |
18.30 |
15.30 |
20.30 |
19.10 |
34.5 |
31.9 |
2.4 |
1.0 |
M20 x 2.5 |
30.00 |
29.16 |
34.64 |
32.95 |
22.40 |
18.90 |
24.80 |
23.50 |
42.8 |
39.9 |
3.0 |
1.2 |
- Also includes metal nuts with non-metallic inserts, plugs or patches in their threads.
- All dimensions are in millimeters.