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ASME B18.2.2 Hex Slotted Nuts

ASME B18.2.2 Hex Slotted Nuts

ASME B18.2.2 Hex Slotted Nuts Dimensions (mm)

Nominal Size Basic Major Diameter of Thread Width Across Flats, F Width Across Corners, G Thickness, H Unslotted Thickness, T Width of Slot, S Maximum Runout of Bearing Surface to Thread Axis, FIM
Basic Min. Max. Min. Max. Basic Min. Max. Min. Max. Min. Max.
1/4 6.350 11.113 10.871 11.125 12.395 12.827 7.144 6.960 7.315 4.572 5.080 1.778 2.540 0.381
5/16 7.938 12.700 12.421 12.700 14.148 14.656 8.334 8.128 8.534 5.588 6.096 2.286 3.048 0.406
3/8 9.525 14.288 13.995 14.275 15.951 16.510 10.319 10.109 10.541 6.858 7.366 3.048 3.810 0.432
7/16 11.113 17.463 17.145 17.475 19.507 20.168 11.509 11.278 11.760 7.366 7.874 3.048 3.810 0.457
1/2 12.700 19.050 18.694 19.050 21.336 21.996 14.288 14.021 14.554 10.160 10.668 3.810 4.572 0.483
9/16 14.288 22.225 21.869 22.225 24.943 25.654 15.478 15.189 15.773 10.414 10.922 3.810 4.572 0.508
5/8 15.875 23.813 23.419 23.825 26.695 27.508 18.256 17.932 18.567 12.446 12.954 4.572 6.096 0.533
3/4 19.050 28.575 27.635 28.575 31.496 32.995 20.638 20.269 21.006 13.970 14.478 4.572 6.096 0.584
7/8 22.225 33.338 32.233 33.325 36.754 38.506 23.019 22.606 23.419 16.256 17.018 4.572 6.096 0.635
1 25.400 38.100 36.830 38.100 41.986 43.993 25.400 24.943 25.857 17.780 18.542 6.096 7.620 0.686
1 1/8 28.575 42.863 41.427 42.875 47.219 49.505 29.369 28.854 29.870 20.320 21.082 6.096 8.382 0.762
1 1/4 31.750 47.625 46.025 47.625 52.476 54.991 31.750 31.191 32.309 21.844 22.606 7.874 10.160 0.838
1 3/8 34.925 52.388 50.648 52.375 57.734 60.503 34.925 34.315 35.535 24.892 25.908 7.874 10.160 0.914
1 1/2 38.100 57.150 55.245 57.150 62.992 65.989 38.100 37.440 38.760 26.416 27.432 9.398 11.684 0.991

ASME B18.2.2 Hex Slotted Nuts Dimensions (Inch)

Nominal Size Basic Major Diameter of Thread Width Across Flats, F Width Across Corners, G Thickness, H Unslotted Thickness, T Width of Slot, S Maximum Runout of Bearing Surface to Thread Axis, FIM
Basic Min. Max. Min. Max. Basic Min. Max. Min. Max. Min. Max.
1/4 0.2500 7/16 0.428 0.438 0.488 0.505 9/32 0.274 0.288 0.18 0.20 0.07 0.10 0.015
5/16 0.3125 1/2 0.489 0.500 0.557 0.577 21/64 0.320 0.336 0.22 0.24 0.09 0.12 0.016
3/8 0.3750 9/16 0.551 0.562 0.628 0.650 13/32 0.398 0.415 0.27 0.29 0.12 0.15 0.017
7/16 0.4375 11/16 0.675 0.688 0.768 0.794 29/64 0.444 0.463 0.29 0.31 0.12 0.15 0.018
1/2 0.5000 3/4 0.736 0.750 0.840 0.866 9/16 0.552 0.573 0.40 0.42 0.15 0.18 0.019
9/16 0.5625 7/8 0.861 0.875 0.982 1.010 39/64 0.598 0.621 0.41 0.43 0.15 0.18 0.020
5/8 0.6250 15/16 0.922 0.938 1.051 1.083 23/32 0.706 0.731 0.49 0.51 0.18 0.24 0.021
3/4 0.7500 1 1/8 1.088 1.125 1.240 1.299 13/16 0.798 0.827 0.55 0.57 0.18 0.24 0.023
7/8 0.8750 1 5/16 1.269 1.312 1.447 1.516 29/32 0.890 0.922 0.64 0.67 0.18 0.24 0.025
1 1.0000 1 1/2 1.450 1.500 1.653 1.732 1 0.982 1.018 0.70 0.73 0.24 0.30 0.027
1 1/8 1.1250 1 11/16 1.631 1.688 1.859 1.949 1 5/32 1.136 1.176 0.80 0.83 0.24 0.33 0.030
1 1/4 1.2500 1 7/8 1.812 1.875 2.066 2.165 1 1/4 1.228 1.272 0.86 0.89 0.31 0.40 0.033
1 3/8 1.3750 2 1/16 1.994 2.062 2.273 2.382 1 3/8 1.351 1.399 0.98 1.02 0.31 0.40 0.036
1 1/2 1.5000 2 1/4 2.175 2.250 2.480 2.598 1 1/2 1.474 1.526 1.04 1.08 0.37 0.46 0.039