Nuts

Hex Nuts

Hex Nuts

Standard (finished) hex nuts are available plain fiinish, galvanized, and in stainless steel.

Heavy Hex Nuts

Heavy Hex Nuts

Heavy hex nuts are available in plain finish, galvanized, and in stainless steel.

Square Nuts

Square Nuts

Square nuts are commonly used with square head bolts and are available both plain and galvanized.

Hex Nuts

Click table to show drawingHeavy Hex Nut
Nominal Size F C H Part Numbers
Width Across Flats Width Across Corners Thickness Domestic Import
Basic Max Min Max Min Basic Max Min Plain Galvanized Plain Galvanized
12 34 0.750 0.736 0.866 0.840 716 0.448 0.427 16270 16271 11701 11702
58 1516 0.938 0.922 1.083 1.051 3564 0.559 0.535 16272 16273 11703 11704
34 118 1.125 1.088 1.299 1.240 4164 0.665 0.617 16274 16275 11705 11706
78 1516 1.312 1.269 1.516 1.447 34 0.776 0.724 16276 16277 11707 11708
1 112 1.500 1.450 1.732 1.653 5564 0.887 0.831 16278 16279 11709 11710
118 11116 1.688 1.631 1.949 1.859 3132 0.999 0.939 16280 16281 11711 11712
114 178 1.875 1.812 2.165 2.066 1116 1.094 1.030 16282 16283 11713 11714
138 2116 2.062 1.994 2.382 2.273 11164 1.206 1.138 - - 11715 11716
112 214 2.250 2.175 2.598 2.480 1932 1.317 1.245 16286 16287 11717 11718

Dimensions per ASME B18.2.2 1987 (1999)

Heavy Hex Nuts (A194 2H)

Click table to show drawingHeavy Hex Nut
Bolt Diam. F C H Weight
(lbs.)
Part Numbers
Width Across Flats Width Across Corners Thickness A563A A1942H A563DH
Domestic Import Domestic Import Domestic
Basic Max Min Max Min Basic Max Min Plain Galv. Plain Galv. Plain Galv. Plain Galv. Plain Galv.
12 78 0.875 0.850 1.010 0.969 3164 0.504 0.464 0.07 - 19505 11729 11730 16356 - 11761 11762 - 18345
58 1116 1.062 1.031 1.227 1.175 3964 0.631 0.587 0.12 - - 11731 11732 16358 16359 11763 11764 - 18346
34 114 1.250 1.212 1.443 1.382 4764 0.758 0.710 0.20 16306 16307 11733 11734 16360 16361 11765 11766 - 18347
78 1716 1.438 1.394 1.660 1.589 5564 0.885 0.833 0.30 16308 16309 11735 11736 16362 16363 11767 11768 - 18348
1 158 1.625 1.575 1.876 1.796 6364 1.012 0.956 0.43 16310 16311 11737 11738 16364 16365 11769 11770 - 18349
118 11316 1.812 1.756 2.093 2.002 1764 1.139 1.079 0.59 16312 16313 11739 11740 16366 - 11771 11772 - 16367
114 2 2.000 1.938 2.309 2.209 1732 1.251 1.187 0.79 16314 16315 11741 11742 16370 - 11773 11774 - 16371
138 2316 2.188 2.119 2.526 2.416 11132 1.378 1.310 1.02 - - 11743 11744 16374 - 11775 11776 - 16375
112 238 2.375 2.300 2.742 2.622 11532 1.505 1.433 1.31 16318 16319 11745 11746 16378 - 11777 11778 - 16379
158 2916 2.562 2.481 2.959 2.828 11932 1.632 1.556 1.62 - - 17750 17751 16380 16381 11779 11780 16380 16381
134 234 2.750 2.662 3.175 3.035 12332 1.759 1.679 2.04 16322 16323 11747 11748 16384 16385 12549 12550 16384 16385
178 21516 2.938 2.844 3.392 3.242 12732 1.886 1.802 2.41 - - 19433 19434 - - - - - -
2 318 3.125 3.025 3.608 3.449 13132 2.013 1.925 2.99 16324 16325 11749 11750 16390 16391 11783 11784 16390 16391
214 312 3.500 3.388 4.041 3.862 21364 2.251 2.155 4.19 16326 16327 11751 11752 16396 16397 12681 12682 16396 16397
212 378 3.875 3.750 4.474 4.275 22964 2.505 2.401 5.64 16328 16329 11753 11754 16398 16399 12553 12554 16398 16399
234 414 4.250 4.112 4.907 4.688 24564 2.759 2.647 7.38 16330 16331 15864  16041 16400 16401 12555 12556 16400 16401
3 458 4.625 4.475 5.340 5.102 26164 3.013 2.893 9.50 19294 19308 15863 16042 16402 16403 12601 12602 16402 16403
314 5 5.000 4.838 5.774 5.515 3316 3.252 3.124 11.94 - - 18395 - - - - - - -
312 538 5.375 5.200 6.207 5.928 3716 3.506 3.370 15.26 - - 18495 - - - - - - -
334 534 5.750 5.562 6.640 6.341 31116 3.760 3.616 18.12 - - - - - - - - - -
4 618 6.125 5.925 7.073 6.755 31516 4.014 3.862 21.80 - - 11755 11756 16404 16405 - - 16404 16405

Dimensions per ASME B18.2.2 1987 (1999)

Square Nuts

Click table to show drawingSquare Nut
Nominal Size F C H Part Numbers
Width Across Flats Width Across Corners Thickness
Basic Max Min Max Min Basic Max Min Plain Galvanized
12 1316 0.812 0.788 1.149 1.052 716 0.458 0.418 18987 11854
58 1 1.000 0.969 1.414 1.300 3564 0.569 0.525 18988 11856
34 118 1.125 1.088 1.591 1.464 2132 0.680 0.632 11857 11858
78 1516 1.312 1.269 1.856 1.712 4964 0.792 0.740 11859 11860
1 112 1.500 1.450 2.121 1.961 78 0.903 0.847 11861 11862
118 11116 1.688 1.631 2.386 2.209 1 1.030 0.970 - -
114 178 1.875 1.812 2.652 2.458 1332 1.126 1.062 11863 11864
138 2116 2.062 1.994 2.917 2.708 11364 1.237 1.169 - -
112 214 2.250 2.175 3.182 2.956 1516 1.348 1.276 - -

Dimensions per ASME B18.2.2 1987 (1999)