Heavy Hex Nuts - Baseline Bolts Industries LLC

Heavy hex nuts are both larger and thicker when compared to the finished hex nuts. Heavy hex nuts come in a number of grades. Moreover, the heavy pattern is usually used for bolts with a large diameter and that which possess high strength. Well, we have a nut compatibility chart with us that will assist you in determining heavy hex nut(s) which are compatible with a specific grade of bolt. Since hot-dip galvanizing tends to add 2.2 – 5 mils thickness to the threaded portion of a fastener, our galvanized heavy hex nuts usually get tapped oversize in order to balance the corrosion resistant coating of the bolts.

Stock

Diameters: 3/8″ – 2-3/4″
Origin: Domestic and import
Finish: Plain and hot-dip galvanized
Grades: A563 (grades A, C, and DH), A194 grade 2H

Dimensions

Click table to show drawing

Bolt Diam.	F			C		H			Weight (lbs.)	Part Numbers
	Width Across Flats			Width Across Corners		Thickness				A563A				A1942H				A563DH
	Width Across Flats			Width Across Corners		Thickness				Domestic		Import		Domestic		Import		Domestic
	Basic	Max	Min	Max	Min	Basic	Max	Min		Plain	Galv.	Plain	Galv.	Plain	Galv.	Plain	Galv.	Plain	Galv.
¹⁄₂	⁷⁄₈	0.875	0.850	1.010	0.969	³¹⁄₆₄	0.504	0.464	0.07	–	19505	11729	11730	16356	–	11761	11762	–	18345
⁵⁄₈	1¹⁄₁₆	1.062	1.031	1.227	1.175	³⁹⁄₆₄	0.631	0.587	0.12	–	–	11731	11732	16358	16359	11763	11764	–	18346
³⁄₄	1¹⁄₄	1.250	1.212	1.443	1.382	⁴⁷⁄₆₄	0.758	0.710	0.20	16306	16307	11733	11734	16360	16361	11765	11766	–	18347
⁷⁄₈	1⁷⁄₁₆	1.438	1.394	1.660	1.589	⁵⁵⁄₆₄	0.885	0.833	0.30	16308	16309	11735	11736	16362	16363	11767	11768	–	18348
1	1⁵⁄₈	1.625	1.575	1.876	1.796	⁶³⁄₆₄	1.012	0.956	0.43	16310	16311	11737	11738	16364	16365	11769	11770	–	18349
1¹⁄₈	1¹³⁄₁₆	1.812	1.756	2.093	2.002	1⁷⁄₆₄	1.139	1.079	0.59	16312	16313	11739	11740	16366	–	11771	11772	–	16367
1¹⁄₄	2	2.000	1.938	2.309	2.209	1⁷⁄₃₂	1.251	1.187	0.79	16314	16315	11741	11742	16370	–	11773	11774	–	16371
1³⁄₈	2³⁄₁₆	2.188	2.119	2.526	2.416	1¹¹⁄₃₂	1.378	1.310	1.02	–	–	11743	11744	16374	–	11775	11776	–	16375
1¹⁄₂	2³⁄₈	2.375	2.300	2.742	2.622	1¹⁵⁄₃₂	1.505	1.433	1.31	16318	16319	11745	11746	16378	–	11777	11778	–	16379
1⁵⁄₈	2⁹⁄₁₆	2.562	2.481	2.959	2.828	1¹⁹⁄₃₂	1.632	1.556	1.62	–	–	17750	17751	16380	16381	11779	11780	16380	16381
1³⁄₄	2³⁄₄	2.750	2.662	3.175	3.035	1²³⁄₃₂	1.759	1.679	2.04	16322	16323	11747	11748	16384	16385	12549	12550	16384	16385
1⁷⁄₈	2¹⁵⁄₁₆	2.938	2.844	3.392	3.242	1²⁷⁄₃₂	1.886	1.802	2.41	–	–	19433	19434	–	–	–	–	–	–
2	3¹⁄₈	3.125	3.025	3.608	3.449	1³¹⁄₃₂	2.013	1.925	2.99	16324	16325	11749	11750	16390	16391	11783	11784	16390	16391
2¹⁄₄	3¹⁄₂	3.500	3.388	4.041	3.862	2¹³⁄₆₄	2.251	2.155	4.19	16326	16327	11751	11752	16396	16397	12681	12682	16396	16397
2¹⁄₂	3⁷⁄₈	3.875	3.750	4.474	4.275	2²⁹⁄₆₄	2.505	2.401	5.64	16328	16329	11753	11754	16398	16399	12553	12554	16398	16399
2³⁄₄	4¹⁄₄	4.250	4.112	4.907	4.688	2⁴⁵⁄₆₄	2.759	2.647	7.38	16330	16331	15864	16041	16400	16401	12555	12556	16400	16401
3	4⁵⁄₈	4.625	4.475	5.340	5.102	2⁶¹⁄₆₄	3.013	2.893	9.50	19294	19308	15863	16042	16402	16403	12601	12602	16402	16403
3¹⁄₄	5	5.000	4.838	5.774	5.515	3³⁄₁₆	3.252	3.124	11.94	–	–	18395	–	–	–	–	–	–	–
3¹⁄₂	5³⁄₈	5.375	5.200	6.207	5.928	3⁷⁄₁₆	3.506	3.370	15.26	–	–	18495	–	–	–	–	–	–	–
3³⁄₄	5³⁄₄	5.750	5.562	6.640	6.341	3¹¹⁄₁₆	3.760	3.616	18.12	–	–	–	–	–	–	–	–	–	–
4	6¹⁄₈	6.125	5.925	7.073	6.755	3¹⁵⁄₁₆	4.014	3.862	21.80	–	–	11755	11756	16404	16405	–	–	16404	16405
Dimensions per ASME B18.2.2 1987 (1999)