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Grade A Heavy Hex Nut

ASTM A563 Grade A heavy hex nuts are made from carbon steel. Dimensional specifications are governed by ASME B18.2.2. Grade markings are not required for A563 Grade A heavy hex nuts, though in some cases Grade A nuts may be marked with the letter A. ASTM A563 covers standard specifications for carbon and alloy steel nuts. Heavy hex nuts provide increased bearing surface area over finished nuts.

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Dimensional Specifications

Dimensional Specifications

Dimensional SpecificationsGrade A

Per ASME B18.2.2-2015
Nominal Diameter		UNC	F			G		H
			Width Across Flats			Width Across Corners		Thickness
			Basic	Max	Min	Max	Min	Basic	Max	Min
1/4	0.250	20	1/2	0.500	0.488	0.577	0.556	15/64	0.250	0.218
5/16	0.313	18	9/16	0.562	0.546	0.650	0.220	19/64	0.314	0.280
3/8	0.375	16	11/16	0.688	0.669	0.794	0.763	23/64	0.377	0.341
7/16	0.438	14	3/4	0.750	0.728	0.866	0.830	27/64	0.441	0.403
1/2	0.500	13	7/8	0.875	0.850	1.010	0.990	31/64	0.504	0.464
9/16	0.563	12	15/16	0.938	0.909	1.083	1.037	35/64	0.568	0.526
5/8	0.625	11	1 1/16	1.062	1.031	1.227	1.175	39/64	0.631	0.587
3/4	0.750	10	1 1/4	0.250	1.212	1.443	1.382	47/64	0.758	0.710
7/8	0.875	9	1 7/16	1.438	1.394	1.660	1.589	55/64	0.885	0.833
1	1.000	8	1 5/8	1.625	1.575	1.876	1.796	63/64	1.012	0.956
1 1/8	1.125	7	1 13/16	1.812	1.756	2.093	2.002	1 7/64	1.139	1.079
1 1/4	1.250	7	2	2.000	1.380	2.309	2.209	1 7/32	1.251	1.187
1 3/8	1.375	6	2 3/16	2.188	2.119	2.526	2.416	1 11/32	1.378	1.310
1 1/2	1.500	6	2 3/8	2.375	2.300	2.742	2.622	1 15/32	1.505	1.433
1 5/8	1.625	5 1/2	2 9/16	2.562	2.481	2.959	2.828	1 19/32	1.632	1.556
1 3/4	1.750	5	2 3/4	2.750	2.662	3.175	3.035	1 23/32	1.759	1.679
1 7/8	1.875	5	2 15/16	2.938	2.844	3.392	3.242	1 27/32	1.886	1.802
2	2.000	4 1/2	3 1/8	3.125	3.025	3.608	3.449	1 31/32	2.013	1.925
2 1/4	2.250	4 1/2	3 1/2	3.500	3.388	4.041	3.862	2 13/64	2.251	2.155
2 1/2	2.500	4	3 7/8	3.875	3.750	4.474	4.275	2 29/64	2.505	2.401
2 3/4	2.750	4	4 1/4	4.250	4.112	4.907	4.688	2 45/64	2.759	2.647
3	3.000	4	4 5/8	4.625	4.475	5.340	5.102	2 61/64	3.013	2.893
3 1/4	3.250	4	5	5.000	4.838	5.774	5.515	3 3/16	3.252	3.124
3 1/2	3.500	4	5 3/8	5.375	5.200	6.207	5.928	3 7/16	3.506	3.370
3 3/4	3.750	4	5 3/4	5.750	5.562	5.562	6.341	3 11/16	3.670	3.616
4	4.000	4	6 1/8	6.125	5.925	5.925	6.755	3 15/16	4.014	3.862

All dimensions are in inches.

Grade A Heavy Hex Nut

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Diameter	Thread Pitch	Width Across Flats	Height of Nut	Item #	Availability	Price	Quantity
Grade A Heavy Hex Nut Diameter 1/4 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 20 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 1/2 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 0.2344 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B0250000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $0.04186/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
1/4-20 A563 GRADE A HEAVY HEX NUT $0.04186/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 5/16 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 18 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 9/16 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 0.2969 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B0310000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $0.14324/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
5/16-18 A563 GRADE A HEAVY HEX NUT $0.14324/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 3/8 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 16 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 11/16 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 0.3594 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B0370000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $0.15517/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
3/8-16 A563 GRADE A HEAVY HEX NUT $0.15517/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 1/2 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 13 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 7/8 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 0.4844 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B0500000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $0.20069/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
1/2-13 A563 GRADE A HEAVY HEX NUT $0.20069/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 9/16 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 12 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 15/16 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 0.5469 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B0560000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $0.65595/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
9/16-12 A563 GRADE A HEAVY HEX NUT $0.65595/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 5/8 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 11 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 1 1/16 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 0.6094 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B0620000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $0.43385/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
5/8-11 A563 GRADE A HEAVY HEX NUT $0.43385/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 3/4 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 10 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 1 1/4 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 0.7344 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B0750000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $0.69832/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
3/4-10 A563 GRADE A HEAVY HEX NUT $0.69832/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 7/8 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 9 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 1 7/16 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 0.8594 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B0870000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $1.66808/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
7/8-9 A563 GRADE A HEAVY HEX NUT $1.66808/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 1 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 8 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 1 5/8 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 0.9844 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B1000000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $1.56234/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
1-8 A563 GRADE A HEAVY HEX NUT $1.56234/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 1 1/8 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 7 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 1 13/16 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 1.1094 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B1120000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $1.60974/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
1 1/8-7 A563 GRADE A HEAVY HEX NUT $1.60974/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 1 1/4 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 7 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 2 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 1.2188 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B1250000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $2.9581/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
1 1/4-7 A563 GRADE A HEAVY HEX NUT $2.9581/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 1 3/8 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 6 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 2 3/16 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 1.3438 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B1370000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $2.85101/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
1 3/8-6 A563 GRADE A HEAVY HEX NUT $2.85101/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 1 1/2 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 6 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 2 3/8 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 1.4688 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B1500000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $6.03229/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
1 1/2-6 A563 GRADE A HEAVY HEX NUT $6.03229/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 1 5/8 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 5.5000 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 2 9/16 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 1.5938 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B1620000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $3.75082/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
1 5/8-5.5 A563 GRADE A HEAVY HEX NUT $3.75082/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 1 3/4 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 5 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 2 3/4 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 1.7188 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B1750000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $9.94876/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
1 3/4-5 A563 GRADE A HEAVY HEX NUT $9.94876/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 2 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 4 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 3 1/8 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 1.9688 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B2000000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $14.47825/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
2-4.5 A563 GRADE A HEAVY HEX NUT $14.47825/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 2 1/4 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 4.5000 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 3 1/2 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 2.2031 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B2250000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $22.21135/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
2 1/4-4.5 A563 GRADE A HEAVY HEX NUT $22.21135/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 2 1/2 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 4 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 3 7/8 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 2.4531 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B2500000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $14.2531/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
2 1/2-4 A563 GRADE A HEAVY HEX NUT $14.2531/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 2 3/4 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 4 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 4 1/4 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 2.7031 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B2750000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $43.20506/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
2 3/4-4 A563 GRADE A HEAVY HEX NUT $43.20506/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 3 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 4 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 4 5/8 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 2.9531 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B3000000 Quantity Discounts	Grade A Heavy Hex Nut Availability 3-5 Working Days Quantity Discounts	Grade A Heavy Hex Nut Price $62.27802/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
3-4 A563 GRADE A HEAVY HEX NUT $62.27802/EA Qty 3-5 Working Days Product Detail
Grade A Heavy Hex Nut Diameter 3 1/4 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 4 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 5 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 3.1875 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B3250000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $49.15851/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
3 1/4-4 A563 GRADE A HEAVY HEX NUT $49.15851/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 3 1/2 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 4 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 5 3/8 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 3.6875 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B3750000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $120.10763/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
3 3/4-4 A563 GRADE A HEAVY HEX NUT $120.10763/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 4 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 4 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 6 1/8 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 3.9375 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B4000000 Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $150.03262/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
4-4 A563 GRADE A HEAVY HEX NUT $150.03262/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 4 1/4 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 4 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 6 1/2 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 4.2681 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B425NC Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $464.21839/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
4 1/4-4 A563 GRADE A HEAVY HEX NUT $464.21839/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 4 1/2 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 4 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 6 7/8 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 4.5220 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B450NC Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $634.95288/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
4 1/2-4 A563 GRADE A HEAVY HEX NUT $634.95288/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 5 1/2 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 4 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 8 3/8 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 5.5378 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B550NC Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $579.2547/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
5 1/2-4 A563 GRADE A HEAVY HEX NUT $579.2547/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 5 3/4 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 4 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 8 3/4 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 5.6248 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B575NC Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $763.88122/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
5 3/4-4 A563 GRADE A HEAVY HEX NUT $763.88122/EA Qty In Stock Product Detail
Grade A Heavy Hex Nut Diameter 6 Quantity Discounts	Grade A Heavy Hex Nut Thread Pitch 4 Quantity Discounts	Grade A Heavy Hex Nut Width Across Flats 9 1/8 Quantity Discounts	Grade A Heavy Hex Nut Height of Nut 6.0457 Quantity Discounts	Grade A Heavy Hex Nut Item # NH2B600NC Quantity Discounts	Grade A Heavy Hex Nut Availability In Stock Quantity Discounts	Grade A Heavy Hex Nut Price $787.24612/EA Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts	See Quantity Discounts	Grade A Heavy Hex Nut Unit of Measure EA Quantity Discounts
6-4 A563 GRADE A HEAVY HEX NUT $787.24612/EA Qty In Stock Product Detail

ASTM A563	Covers the chemical and mechanical requirements for eight grades of carbon and alloy steel nuts for general structural and mechanical uses on bolts, studs, and other externally threaded parts.
ASME B18.2.2	Covers the complete general and dimensional data for the various types of inch series square and hex nuts, including machine screw nuts and coupling nuts.
ASME B1.1 UNC & UNF Class 2B	Specifies the thread form, series, class, allowance, tolerance, and designation for unified screw threads.

Carbon & Alloy Steel		Per ASTM A563-2015
Diameter	Proof Load Stress (1)		Core Hardness
	ksi		Rockwell
	Non-Zinc-Coated (2)	Zinc-Coated (2)	Min	Max
1/4" thru 4"	100	75	B68	C32

Per ASTM A563-2015
Grade	Material	Carbon	Manganese	Phosphorus	Sulfur
Grade	Material	% by weight	% by weight	% by weight	% by weight
A	Carbon & Alloy Steel	0.55 max	-	0.12	0.15 (1)