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Carbon Steel Heavy Hex Nuts

We manufacturer fasteners with size range from M10 to M100 Hex Nuts, Heavy Hex Nut, Cap Nut, Acorn Nut, Serrated Flange Nut, Coupling Nut, Square Nut, Castle Nut, Wing Nut, Flange Lock Nut, Flex Lock Nut, High Nut, Kep Nut, Jam Nut, Nylon Lock Nut, Slotted Nut, Reversible Lock Nut, Custom Nut, T Nuts & other customized Nuts as per Client's requirement.We produce Hot Forged and Coled Formed Nuts Fasteners.

Heavy Hex Nuts Dimensions & Specifications

A563 Grade A Heavy Hex Nuts

Grade A Heavy Hex Nuts are manufactured from low carbon steel, 1008-1010 for sizes up to 1 inch (cold-formed) and 1045 steel for sizes over 1 inch (hot-formed). Material is manufactured to meet or exceed ASTM A563 Grade A. Zinc plated material will meet or exceed ASTM F1941. Hot-Dip Galvanized material will meet or exceed ASTM A563. Typical hardness is HRB 68 - HRC 32. Proof load strength will meet a minimum of 100,000 psi and 75,000 psi for Hot-Dip Galvanized nuts.

A563 Grade A Heavy Hex Nuts
Nominal Size or Basic Major Diameter of Thread		Width Across Flats			Width Across Corners		Thickness
Nominal Size or Basic Major Diameter of Thread		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	0.546	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	2.002	1-7/64	1.139	1.079
1 1/4	1.2500	2	2.000	1.938	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

IdentificationGrade Mark	Specification	FastenerDescription	Material	Nominal SizeRange (in.)	Mechanical Properties
Proof Load(psi)	Yield StrengthMin (psi)	Tensile StrengthMin (psi)
NoGradeMark	SAE J429Grade 1	Bolts,Screws,Studs	Low or Medium Carbon Steel	1/4 thru 1-1/2	33,000	36,000	60,000
	ASTM A307Grades A&B		Low Carbon Steel	1/4 thru 4	—	—
	SAE J429Grade 2		Low or Medium Carbon Steel	1/4 thru 3/4 Over 3/4 to 1-1/2	55,00033,000	57,00036,000	74,00060,000
NoGradeMark	SAE J429Grade 4	Studs	Medium Carbon Cold Drawn Steel	1/4 thru 1-1/2	—	100,000	115,000
B5	ASTM A193Grade B5		AISI 501	1/4 Thru 4	—	80,000	100,000
B6	ASTM A193Grade B6		AISI 410	85,000	110,000
B7	ASTM A193Grade B7		AISI 4140, 4142, OR 4105	1/4 thru 2-1/2Over 2-1/2 thru 4Over 4 thru 7	——-	105,00095,00075,000	125,000115,000100,000
B16	ASTM A193Grade B16		CrMoVa Alloy Steel	105,00095,00085,000	125,000115,000100,000
B8	ASTM A193Grade B8		AISI 304	1/4 and larger	—	30,000	75,000
B8C	ASTM A193Grade B8C		AISI 347
B8M	ASTM A193Grade B8M		AISI 316
B8T	ASTM A193Grade B8T	Bolts,Screws,Studs for High-Temperature Service	AISI 321	1/4 and larger	—	30,000	75,000
B8	ASTM A193Grade B8		AISI 304Strain Hardened	1/4 thr 3/4Over 3/4 thru 1Over 1 thru 1-1/4Over 1-1/4 thru 1-1/2	———	100,00080,00065,000 50,000	125,000115,000105,00 0100,000
B8C	ASTM A193Grade B8C		AISI 347Strain Hardened
B8M	ASTM A193Grade B8M		AISI 316Strain Hardened			95,00080,00065,000 50,000	110,000100,00095,00 090,000
B8T	ASTM A193Grade B8T		AISI 321Strain Hardened			100,00080,00065,000 50,000	125,000115,000105,000 100,000
L7	ASTM A320Grade L7	Bolts,Screws,Studs for Low-Temperature Service	AISI 4140,4142 or 4145	1/4 thru 2-1/2	—	105,000	125,000
L7A	ASTM A320Grade L7A		AISI 4037
L7B	ASTM A320Grade L7B		AISI 4137
L7C	ASTM A320Grade LC7		AISI 8740
L43	ASTM A320Grade L43		AISI 4340	1/4 thru 4	—	105,000	125,000
B8	ASTM A320Grade B8	Bolts,Screws,Studs for Low-Temperature Service	AISI 304	1/4 and larger	—	30,000	75,000
B8C	ASTM A320Grade B8C		AISI 347
B8T	ASTM A320Grade B8T		AISI 321
B8F	ASTM A320Grade B8F		AISI 303or 303Se
B8M	ASTM A320Grade B8M		AISI 316
B8	ASTM A320Grade B8		AISI 304	1/4 thru 3/4Over 3/4 thru 1Over 1 thru 1-1/4Over 1-1/4 thru 1-1/2	———	100,00080,00065,00 50,00	100,00080,00065,00 50,00
B8C	ASTM A320Grade B8C		AISI 347
B8F	ASTM A320Grade B8F		AISI 303or 303Se
B8M	ASTM A320Grade B8M		AISI 316
B8T	ASTM A320Grade B8T		AISI 321
	SAE J429Grade 5	Bolts,Screws,Studs	Medium Carbon Steel, Quenched and Tempered	1/4 thru 1Over 1 to 1-1/2	85,00074,000	92,00081,000	120,000105,000
ASTM A449	1/4 thru 1Over 1 to 1-1/2Over 1-1/2 thru 3	85,00074,000 55,000	92,00081,00058,000	120,000105,00090,000
	SAE J429Grade 5.1	Sems	Low or Medium Carbon Steel, Quenched and Tempered	No. 6thru 3/8	85,000	—	120,000
	SAE J429Grade 5.2	Bolts,Screws,Studs	Low Carbon Martensitic Steel, Quenched and Tempered	1/4 thru 1	85,000	92,000	120,000
A325	ASTM A325Type 1	High StrengthStructural Bolts	Medium Carbon Steel, Quenched and Tempered	1/2 thru 11-1/8 thru 1-1/2	85,00074,000	92,00081,000	120,000105,000
A325	ASTM A325Type 2		Low Carbon Martensitic Steel, Quenched and Tempered	1/2 thru 1	85,000	92,000	120,000
A325	ASTM A325Type 3		Atmospheric Corrosion Resisting Steel, Quenched and Tempered	1/2 thru 11-1/8 thru 1-1/2	85,00074,000	92,00081,000	120,000105,000
BB	ASTM A354Grade BB	Bolts,Studs	Alloy Steel, Quenched and Tempered	1/4 thru 2-1/22-3/4 thru 4	80,00075,000	83,00078,000	105,000100,000
BC	ASTM A354Grade BC	105,00095,000	109,00099,000	125,000115,000
	SAE J429Grade 7	Bolts,Screws,	Medium Carbon Alloy Steel, Quenched and Tempered ⁴	1/4 thru 1-1/2	105,000	115,000	133,000
	SAE J429Grade 8	Bolts,Screws,Studs	Medium Carbon Alloy Steel, Quenched and Tempered	1/4 thru 1-1/2	120,000	130,000	150,000
ASTM A354Grade BD	Alloy Steel, Quenched and Tempered ⁴
No GradeMark	SAE J429Grade 8.1	Studs	Medium Carbon Alloy or SAE 1041 Modified Elevated Temperature Drawn Steel	1/4 thru 1-1/2	120,000	130,000	150,000
A490	ASTM A490	High Strength Structural Bolts	Alloy Steel, Quenched and Tempered	1/2 thru 1-1/2	120,000	130,000	150,000 min170,000 max
No GradeMark	ISO R898Class 4.6	Bolts,Screws,Studs	Medium Carbon Steel, Quenched and Tempered	All Sizesthru 1-1/2	33,000	36,000	60,000
No GradeMark	ISO R898Class 5.8		55,000		57,000	74,000
8.8or88	ISO R898Class 8.8		Alloy Steel, Quenched and Tempered		85,000	92,000	120,000
10.9or109	ISO R898Class 10.9		120,000		130,000	150,000

FASTENER IDENTIFICATION MARKING

GradeIdentificationMarking	Specification	Material	Nominal SizeIn.	ProofLoadStressksi	HardnessRockwell		SeeNote
Min	Max
No Mark	ASTM A563 – Grade 0	Carbon Steel	1/4 thru 1-1/2	69	B55	C32	3,4
	ASTM A563 – Grade A	Carbon Steel	1/4 thru 1-1/2	90	B68	C32	3,4
	ASTM A563 – Grade B	Carbon Steel	1/4 thru 1	120	B69	C32	3,4
	over 1 thru 1-1/2	105
	ASTM A563 – Grade C	Carbon SteelMay be Quenchedand Tampered	1/4 thru 4	144	B78	C38	5
	ASTM A563 – Grade C3	AtmosphericCorrosionResistant SteelMay be Quenchedand Tampered	1/4 thru 4	144	B78	C38	5,9
	ASTM A563 – Grade D	Carbon SteelMay be Quenchedand Tampered	1/4 thru 4	150	B84	C38	6
	ASTM A563 – Grade DH	Carbon SteelQuenchedand Tampered	1/4 thru 4	175	C24	C38	6
	ASTM A563 – Grade DH3	AtmosphericCorrosionResistant Steel,Quenchedand Tampered	1/4 thru 4	175	C24	C38	5,9
	ASTM A194 – Grade 1	Carbon Steel	1/4 thru 4	130	B70	—	7
	ASTM A194 – Grade 2	Medium CarbonSteel	1/4 thru 4	150	159	352	7,8
	ASTM A194 – Grade 2H	Medium CarbonSteel, Quenchedand Tempered	1/4 thru 4	175	C24	C38	7
	ASTM A194 – Grade 2HM	Medium CarbonSteel, Quenchedand Tempered	1/4 thru 4	150	159	237	7,8
	ASTM A194 – Grade 4	Medium CarbonAlloy Steel,Quenchedand Tempered	1/4 thru 4	175	C24	C38	7
	ASTM A194 – Grade 7	Medium CarbonAlloy Steel,Quenchedand Tempered	1/4 thru 4	175	C24	C38	7
	ASTM A194 – Grade 7M	Medium CarbonAlloy Steel,Quenchedand Tempered	1/4 thru 4	150	159	237	7
See Note 1,2	10

NOTES:

In addition to the indicated grade marking, all grades, except A563 grades O, A and B, must be marked for manufacturer identification.
The markings shown for all grades of A194 nuts are for cold formed and hot forged nuts. When nuts are machined from bar stock the nut must be additionally marked with the letter ‘B’.
Nuts are not required to be marked unless specified by the purchaser. When marked, the identification marking shall be the grade letter O, A or B.
Properties shown are those of nonplated or noncoated coarse thread hex nuts.Properties shown are those of coarse thread heavy hex nuts.
Properties shown are those of coarse thread heavy hex nuts.
Properties shown are those of coarse 8-pitch thread heavy hex nuts.
Hardnesses are Brinell Hardness Numbers.
The nut manufacturer, at his option, may add other markings to indicate the use of atmospheric corrosion resistant steel.
Specifications —
STM A563 — Carbon and Alloy Steel Nuts.
ASTM A194/A194M — Carbon and Alloy Steel Nuts for Bolts
for High Pressure and High Temperature Service.

Nut Type
Hex Nuts	Heavy Hex Nut	Cap Nut	Acorn Nut	Serrated Flange Nut
Coupling Nut	Square Nut	Castle Nut	Wing Nut	Flange Lock Nut
Flex Lock Nut	High Nut	Kep Nut	Jam Nut	Nylon Lock Nut
Slotted Nut	Reversible Lock Nut	Custom Nut	T Nuts

Carbon Steel Heavy Hex Nuts Application Industries

Sunflex Metal Industries are engaged in manufacturing of robust quality of Carbon Steel Heavy Hex Nuts. These Carbon Steel Heavy Hex Nuts are widely used in the following industries:

Mining Industries
Transport Industries- Rail and Road
Construction Industries / Building Systems
Manufacturing Industries
Agriculture Industries
Energy Industries
Water Industries
Automotive Industries
Ship Building Industries
Nuclear Power Plant
Paper & Pulp Industries
Sugar Industries
Engineering Cement Industries
Petro-Chemical Industries
Food Industries
Oil & Gas Industries
Chemical & Pharmaceutical Industries

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Carbon Steel Heavy Hex Nuts

Heavy Hex Nuts Dimensions & Specifications

A563 Grade A Heavy Hex Nuts

FASTENER IDENTIFICATION MARKING

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