Cap (Acorn) Nuts

Cap (Acorn) Nuts

 

Cap Nuts looks like a hex nut with an acorn-shaped top!

They are used to cover exposed bolt threads or to add a finished appearance.

Dimensions

Nominal Size or Basic Major Diameter of Thread F G A H Q T U
Width Across Flats Width Across Corners Body Diameter  Overall Height (Length) Hexagon Height Drill Depth  Full Thread
Max Min Max Min Max Min
#6 0.1380 0.3125 0.302 0.361 0.344 0.300 0.421 0.171 0.281 0.187
#8 0.1640 0.3125 0.302 0.361 0.344 0.300 0.421 0.171 0.281 0.187
#10 0.1900 0.3750 0.362 0.433 0.413 0.360 0.515 0.203 0.343 0.250
#12 0.2160 0.3750 0.362 0.433 0.413 0.360 0.515 0.203 0.375 0.281
1/4″ 0.2500 0.4375 0.428 0.505 0.488 0.410 0.593 0.234 0.406 0.312
5/16″ 0.3125 0.5000 0.489 0.577 0.557 0.470 0.687 0.281 0.468 0.375
3/8″ 0.3750 0.5625 0.551 0.650 0.628 0.530 0.781 0.312 0.562 0.468
7/16″ 0.4375 0.6250 0.606 0.722 0.692 0.590 0.875 0.343 0.625 0.531
1/2″ 0.5000 0.7500 0.736 0.866 0.830 0.720 1.031 0.421 0.750 0.625
9/16″ 0.5625 0.8750 0.861 1.010 0.969 0.840 1.187 0.484 0.812 0.687
5/8″ 0.6250 0.9375 0.922 1.083 1.037 0.910 1.281 0.531 0.906 0.781
3/4″ 0.7500 1.0620 1.031 1.227 1.175 1.030 1.453 0.593 1.062 0.937
7/8″ 0.8750 1.2500 1.212 1.443 1.382 1.220 1.718 0.703 1.218 1.093
1″ 1.0000 1.4375 1.394 2.033 1.914 1.410 1.968 0.812 1.375 1.250
1-1/8″ 1.1250 1.6250 1.575 1.876 1.796 1.590 2.218 0.921 1.593 1.406
1-1/4″ 1.2500 1.8125 1.756 2.093 2.002 1.78 2.468 1.031 1.75 1.562

 

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