ASME B18.16.3M Prevailing Torque Metric Hex Flange Nuts

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.