ASME B18.16.6 Dimensions of Prevailing Torque All-Metal Type Hex Flange Nuts

ASME B18.16.6 Dimensions of Prevailing Torque All-Metal Type Hex Flange Nuts

Dimensions of Prevailing Torque All-Metal Type Hex Flange Nuts

Size Nominal
Diameter 		Width Across
Flats, A 		Width Across
Corners, B 		Maximum
Thickness,
C 		Min.
Hex
Height,
D 		Minimum
Diameter
of
Bearing
Surface,
E 		Minimum
Flange
Thickness,
G 		Max.
Flange
Top
Radius,
R 		Maximum
Flange
Diameter,
F 		Maximum
Runout of
Bearing
Surface
With Thread
P.D. FIM
Max. Min. Max. Min.
¼ 0.2500 0.4385 0.4280 0.505 0.488 0.300 0.140 0.484 0.040 0.010 0.560 0.011
5⁄16 0.3125 0.5020 0.4890 0.577 0.557 0.365 0.170 0.602 0.050 0.010 0.680 0.013
⅜ 0.3750 0.5645 0.5510 0.650 0.628 0.425 0.200 0.730 0.060 0.020 0.810 0.015
7⁄16 0.4375 0.6895 0.6750 0.794 0.768 0.495 0.230 0.846 0.070 0.020 0.930 0.016
½ 0.5000 0.7520 0.7360 0.866 0.840 0.555 0.260 0.982 0.080 0.020 1.070 0.018
9⁄16 0.5625 0.8770 0.8610 1.010 0.982 0.625 0.290 1.101 0.090 0.030 1.190 0.019
⅝ 0.6250 0.9395 0.9220 1.083 1.051 0.690 0.320 1.230 0.100 0.030 1.330 0.021
¾ 0.7500 1.1270 1.0880 1.299 1.240 0.825 0.380 1.472 0.110 0.030 1.585 0.023