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Dimensions of Heavy Hex Nuts
Heavy Hex Nuts                           Heavy Hex Nuts           
Heavy Hex Nuts
Nominal or 
Basic Major 
Diameter of 
Thread
F G H
Width Across Flats Width Across Corners Thickness
Basic Max Min Max Min Basic Max Min
1/4 0.2500 1/2 0.500 0.488 0.577 0.556 15/64 0.250 0.218
5/16 0.3125 9/16 0.562 0.456 0.650 0.622 19/64 0.314 0.280
3/8 0.3750 11/16 0.688 0.669 0.794 0.763 23/64 0.377 0.341
7/16 0.4375 3/4 0.750 0.728 0.866 0.830 27/64 0.441 0.403
1/2 0.5000 7/8 0.875 0.850 1.010 0.969 31/64 0.504 0.464
9/16 0.5625 15/16 0.938 0.909 1.083 1.037 35/64 0.568 0.526
5/8 0.6250 1-1/16 1.062 1.031 1.227 1.175 39/64 0.631 0.587
3/4 0.7500 1-1/4 1.250 1.212 1.443 1.382 47/64 0.758 0.710
7/8 0.8750 1-7/16 1.438 1.394 1.660 1.589 55/64 0.885 0.833
1" 1.0000 1-5/8 1.625 1.575 1.876 1.796 63/64 1.012 0.956
1-1/8 1.1250 1-13/16 1.812 1.756 2.093 2.209 1-7/32 1.251 1.187
1-1/4 1.2500 2" 2.000 13938 2.309 2.209 1-7/32 1.251 1.187
1-3/8 1.3750 2-3/16 2.188 2.119 2.526 2.416 1-11/32 1.378 1.310
1-1/2 1.5000 2-3/8 2.375 2.300 2.742 2.622 1-15/32 1.505 1.433
1-5/8 1.6250 2-9/16 2.562 2.481 2.959 2.828 1-19/32 1.632 1.556
1-3/4 1.7500 2-3/4 2.750 2.662 3.175 3.035 1-23/32 1.759 1.679
2" 2.0000 3-1/8 3.125 3.025 3.608 3.449 1-31/32 2.013 1.925
2-1/4 2.2500 3-1/2 3.500 3.388 4.041 3.862 2-13/64 2.251 2.155
2-1/2 2.5000 3-7/8 3.875 3.750 4.474 4.275 2-29/64 2.505 2.401
2-3/4 2.7500 4-1/4 4.250 4.112 4.907 4.688 2-45/64 2.759 2.647
3" 3.0000 4-5/8 4.625 4.475 5.340 5.102 2-61/64 3.013 2.893
3-1/4 3.2500 5" 5.000 4.838 5.774 5.515 3-3/16 3.252 3.124
3-1/2 3.5000 5-3/8 5.375 5.200 6.207 5.928 3-7/16 3.506 3.370
3-3/4 3.7500 5-3/4 5.750 5.562 6.640 6.341 3-11/16 3.760 3.616
4" 4.0000 6-1/8 6.125 5.925 7.073 6.755 3-15/16 4.014 3.862

 

 


God Bless America

Fairbury Fastener
23092 E. 800 North Rd. / U.S. Rt 24 East
Fairbury, IL 61739
Phone:  (815) 692-3848
  
FAX:  (815) 692-2200
E- Mail: 
sales @ fairbury fastener . com

Call 815-692-3848
to place your order

We do NOT process international orders.  Prices are subject to change and may be different than shown on our site.  
Call for current pricing.
 All Returns subject to restocking.

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