ASTM A563 Nut and A563M Grade A/Dh Coupling/Hex Nuts dimensions (2023)

ASTM A563 Nut and A563M Grade A/Dh Coupling/Hex Nuts dimensions (1)

ASME SA 563 Coupling and hex nut manufacturer, check astm a563 grade a nuts Specification and Equivalent here

ASTM A563 Nuts come under the specification for carbon steel and alloy steel nuts that are intended for general, mechanical and structural applications. Viha Steel & Forging is a manufacturer of the different grades of nuts such as the astm a563 dh heavy hex nuts. The hex nuts are easy to install with tools and therefore it is one of the most commonly used type of nuts.

There are different grades as A, B, C, D, DH, C3 and DH3. The astm a563 hex nuts can come in any of these grades. The different grades specify the carbon steel, weathering steel, quenched and tempered steel, hex and heavy hex types of material and products. Different grades of the astm a563 square nuts also come with different tensile strengths. The sizes range from ¼ inches to 4 inches. The hex nuts range up to 1 ½ inches and the heavy hex nuts range up to 4 inches. The nuts astm a563 grade a have minimum tensile strength up to 90ksi as plain.

When galvanized, the proof load is 68ksi. The hardness of this grade of nuts ranges from 116 to 302 HBN. The DH3 grade has tensile strength up to 175ksi and hardness ranging from 248 to 352 HBN. The astm a563 nuts specifications cover the different mechanical, chemical properties with heat treatments. The chemical composition of these nuts has carbon, manganese, phosphors and sulfur in the composition. The proportions range differently. The A563 Grade A Nut has 0.55% carbon, 0.12% phosphors and 0.15% sulfur. As a leading manufacturer and supplier, we produce the nuts in all types. Please feel free to inquire us on your needs on the different types of nuts such as the ASTM A563m and the respective prices.

Table Of Content

  • A563 Grades
  • Standards And Specifications Of ASTM A563 Nuts
  • astm a563 dh heavy hex nuts Identification Markings
  • Look which type of astm a563 nut available with us
  • astm a563 hex nuts latest Price List
  • astm a563 square nuts Mechanical Strength
  • Chemical Resistance Guide Of nuts astm a563 grade a
  • Size Table Of A563 Grade A Nut
  • Dimensions table astm a563 dh heavy hex nuts
  • Dimension standard of astm a563 hex nuts
  • Keep Bulk Stock Of a563 grade a heavy hex nut At Our Stockyard

A563 Grades

A Carbon steel,hexorheavy hex
B Carbon steel, hex or heavy hex
C Carbon steel, quenched and tempered, heavy hex
D Carbon steel, quenched and tempered, heavy hex
DH Carbon steel, quenched and tempered, heavy hex
C3 Weathering steel, quenched and tempered, heavy hex
DH3 Weathering steel, quenched and tempered, heavy hex

Standards And Specifications Of ASTM A563 Nuts

Standards

Designation

ASTM

F563

ASTM F563 Nuts Coatings Cadmium, Black Oxide, Teflon, Galvanized, Zinc, Xylan, Others Upon Request
Delivery time custom product will according to special requirement, Regular product is about 7-15 days

Dimensions

ASME B18.3, B18.2.1

Product Origin

Made in India

Melt Origin

South America/East Europe/Japan/Korea

Threads Configuration

B1.13M 6h Metric Coarse Threads and ASME B1.1 2A/3A Inch Unified Threads

Additional Certifications

Merkblatt AD 2000 W2 Certified, PED 97/23/EC Certified

Certification

Dual Certified As per ASME & ASTM Codes

Mandatory Requirements

Free from Radioactive & Mercury Contamination

Samples Yes

Additional Requirements

NACE MR0175 / MR0103 /ISO 15156 Compliance

Payment Terms Western Union, T/T, Paypal, Trade Assurance 30% deposit & balance before shipping or L/C

astm a563 dh heavy hex nuts Identification Markings

Grade Identification Marking Specification Material Nominal Size, In. Proof Load Stress, ksi Hardness Rockwell See Note
Min Max
ASTM A563 Nut and A563M Grade A/Dh Coupling/Hex Nuts dimensions (2) ASTM A563 Grade O Carbon Steel 1/4 - 1-1/2 69 B55 C32 2,3
ASTM A563 Grade A Carbon Steel 1/4 - 1-1/2 90 B68 C32 2,3
ASTM A563 Grade B Carbon Steel 1/4 - 1 120 B69 C32 2,3
>1 - 1-1/2 105
ASTM A563 Nut and A563M Grade A/Dh Coupling/Hex Nuts dimensions (3) ASTM A563 Grade C Carbon Steel, may be Quenched and Tempered 1/4 - 4 144 B78 C38 4
ASTM A563 Nut and A563M Grade A/Dh Coupling/Hex Nuts dimensions (4) ASTM A563 Grade C3 Atmospheric Corrosion Resistant Steel, may be Quenched and Tempered 1/4 - 4 144 B78 38 4,6
ASTM A563 Nut and A563M Grade A/Dh Coupling/Hex Nuts dimensions (5) ASTM A563 Grade D Carbon Steel, may be Quenched and Tempered 1/4 - 4 150 B84 C38 5
ASTM A563 Nut and A563M Grade A/Dh Coupling/Hex Nuts dimensions (6) ASTM A563 Grade DH Carbon Steel, Quenched and Tempered 1/4 - 4 175 C24 C38 5
ASTM A563 Nut and A563M Grade A/Dh Coupling/Hex Nuts dimensions (7) ASTM A563 Grade DH3 Atmospheric Corrosion Resistant Steel, Quenched and Tempered 1/4 - 4 175 C24 C38 4,6
NOTES:
  1. In addition to the indicated grade marking, all grades, except A563 grades O, A, and B, must be marked for manufacturer identification.
  2. 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.
  3. Properties shown are those of nonplated or noncoated coarse thread nuts.
  4. Properties shown are those of coarse thread heavy hex nuts.
  5. Properties shown are those of coarse thread heavy hex nuts. Other nuts styles and fine threads may apply.
  6. The nut manufacturer, at his option, may add other markings to indicate the use of atmospheric corrosion resistant steel.
Inch Fastener Standards. 7th ed. Cleveland: Industrial Fasteners Institute, 2003. n-80-n-81.

Look which type of astm a563 nut available with us

ASTM A563 Nut and A563M Grade A/Dh Coupling/Hex Nuts dimensions (8)Astm A563 Grade A Coupling Nuts

ASTM A563 Nut and A563M Grade A/Dh Coupling/Hex Nuts dimensions (9)ASTM A563 Nut

ASTM A563 Nut and A563M Grade A/Dh Coupling/Hex Nuts dimensions (10)ASME SA 563 Hex Nut

ASTM A563 Nut and A563M Grade A/Dh Coupling/Hex Nuts dimensions (11)A563 Dh Heavy Hex Nuts

astm a563 hex nuts latest Price List

ASTM A563 Nuts

Price

ASTM A563 grade C hex heavy nut

US$ 900.00-US$ 1,400.00 / Ton

Black ASTM A563 Gr DH Heavy Hex Nut M64

US$ 0.08-US$ 1.00 / Piece

Grade DH a563 heavy hex nut teflon nut

US$ 0.01-US$ 0.50 / Piece 1 Piece Min. Order

Your need for A563 Dh Heavy Hex Nuts of standard size ends here, We provide the best quality range of Grade F563 Lock nut

astm a563 square nuts Mechanical Strength

Grade Style Size, in. Proof Load, ksi Hardness, HBN
Plain Galvanized
A Hex 1/4 - 1-1/2 90 68 116 - 302
Heavy Hex 1/4 - 4 100 75 116 - 302
B Heavy Hex 1/4 - 1 133 100 121 - 302
Heavy Hex 1-1/8 - 1-1/2 116 87 121 - 302
C / C3 Heavy Hex 1/4 - 4 144 144 143 - 352
D Heavy Hex 1/4 - 4 150 150 248 - 352
DH / DH3 Heavy Hex 1/4 - 4 175 150 248 - 352
For UNC, 8UN, 6UN, and Coarse Pitch Threads

Chemical Resistance Guide Of nuts astm a563 grade a

Element Grades O, A, B, C D** DH**
Carbon 0.55% max 0.55% max 0.20 - 0.55%
Manganese, min 0.30% 0.60%
Phosphorus, max 0.12% 0.04% 0.04%
Sulfur, max 0.15%* 0.05% 0.05%
* For grades O, A and B a sulfur content of 0.23% max is acceptable with the purchasers approval
** For grades D and DH a sulfur content of 0.05 - 0.15% is acceptable provided the manganese is 1.35% min
Element Classes for Grade C3* DH3
A B C D E F N
Carbon 0.33 - 0.40% 0.38 - 0.48% 0.15 - 0.25% 0.15 - 0.25% 0.20 - 0.25% 0.20 - 0.25% 0.20 - 0.53%
Manganese 0.90 - 1.20% 0.70 - 0.90% 0.80 - 1.35% 0.40 - 1.20% 0.60 - 1.00% 0.90 - 1.20% 0.40% min
Phosphorus 0.040% max 0.06 - 0.12% 0.035% max 0.040% max 0.040% max 0.040% max 0.07 - 0.15% 0.046% max
Sulfur, max 0.050% 0.050% 0.040% 0.050% 0.040% 0.040% 0.050% 0.050%
Silicon 0.15 - 0.35% 0.30 - 0.50% 0.15 - 0.35% 0.25 - 0.50% 0.15 - 0.35% 0.15 - 0.35% 0.20 - 0.90%
Copper 0.25 - 0.45% 0.20 - 0.40% 0.20 - 0.50% 0.30 - 0.50% 0.30 - 0.60% 0.20 - 0.40% 0.25 - 0.55% 0.20% min
Nickel 0.25 - 0.45% 0.50 - 0.80% 0.25 - 0.50% 0.50 - 0.80% 0.30 - 0.60% 0.20 - 0.40% 1.00% max 0.20% min**
Chromium 0.45 - 0.65% 0.50 - 0.75% 0.30 - 0.50% 0.50 - 1.00% 0.60 - 0.90% 0.45 - 0.65% 0.30 - 1.25% 0.45% min
Vanadium 0.020% min
Molybdenum 0.06% max 0.10% max 0.15% min**
Titanium 0.05% max
* Selection of a class shall be at the option of the manufacturer
** Nickel or Molybdenum may be used.

Size Table Of A563 Grade A Nut

Nut Size
(mm)

Diameter*
(mm)

Height
(mm)

Hex Nut

Jam Nut

Nylock Nut

2

4

1.6

1.2

-

2.5

5

2

1.6

-

3

5.5

2.4

1.8

4

4

7

3.2

2.2

5

5

8

4

2.7

5

6

10

5

3.2

6

7

11

5.5

3.5

-

8

13

6.5

4

8

10

17

8

5

10

12

19

10

6

12

14

22

11

7

14

16

24

13

8

16

18

27

15

9

(Video) A563 Gr. C and Gr. DH and ASTM A194 2H heavy hex nuts live demo

18.5

20

30

16

10

20

*This is the diameter across the flats. It is also the size of wrench to use.

Check astm a563 grade dh equivalent, A563 Nut Dimensions and updated price online

Dimensions table astm a563 dh heavy hex nuts

ASTM A563 Nut and A563M Grade A/Dh Coupling/Hex Nuts dimensions (12)

Nominal Size or Basic Major Thread Diameter

F

G

H

Width Across Flats

Width Across Corners

Thickness

Basic

Max

Min

Max

Min

Basic

Max

Min

1/4

.2500

1/2

.500

.488

.577

.556

15/64

.250

.218

5/16

.3125

9/16

.562

.546

.650

.622

19/64

.314

.280

3/8

.3750

11/16

.688

.669

.794

.763

23/64

.377

.341

7/16

.4375

3/4

.750

.728

.866

.830

27/64

.441

.403

1/2

.5000

7/8

.875

.850

1.010

.969

31/64

.504

.464

9/16

.5625

15/16

.938

.909

1.083

1.037

35/64

.568

.526

5/8

.6250

1-1/16

1.062

1.031

1.227

1.175

39/64

.631

.587

3/4

.7500

1-1/4

1.250

1.212

1.443

1.382

47/64

.758

.710

7/8

.8750

1-7/16

1.438

1.394

1.660

1.589

55/64

.885

.833

1

1.0000

1-5/8

1.325

1.575

1.876

1.796

63/64

1.012

.956

1-1/8

1.1250

1-13/16

1.812

1.756

(Video) Hex Nut Thickness

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

1.460

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

(Video) Yellow zinc finish Gr.2, Gr.5 and DIN439 Hex Jam Nut live demo

5.562

6.640

6.341

3-11/16

3.670

3.616

4

4.0000

6-1/8

6.125

5.925

7.073

6.755

3-15/16

4.014

3.862


Thread Dimensions and Oversizing Allowances

For Nuts: Hot Dipped Galvanized per Specification F2329

Nominal Nut Size, in. and Pitch Diametral Allowance, in. Pitch Diameter
Min Max
0.250 - 20 0.016 0.2335 0.2384
0.312 - 18 0.017 0.2934 0.2987
0.375 - 16 0.017 0.3514 0.3571
0.437 - 14 0.018 0.4091 0.4152
0.500 - 13 0.018 0.4680 0.4745
0.562 - 12 0.020 0.5284 0.5352
0.625 - 11 0.020 0.5860 0.5932
0.750 - 10 0.020 0.7050 0.7127
0.875 - 9 0.022 0.8248 0.8330
1.000 - 8 0.024 0.9428 0.9516
1.125 - 8 0.024 1.0678 1.0768
1.125 - 7 0.024 1.0562 1.0656
1.250 - 8 0.024 1.1928 1.2020
1.250 - 7 0.024 1.1812 1.1908
1.375 - 8 0.027 1.3208 1.3301
1.375 - 6 0.027 1.2937 1.3041
1.500 - 8 0.027 1.4458 1.4553
1.500 - 6 0.027 1.4187 1.4292
1.750 - 5 0.050 1.6701 1.6817
2.000 - 4.5 0.050 1.9057 1.9181
2.250 - 4.5 0.050 2.1557 2.1683
2.500 - 4 0.050 2.3876 2.4011
2.750 - 4 0.050 2.6376 2.6513
3.000 - 4 0.050 2.8876 2.9015
3.250 - 4 0.050 3.1376 3.1517
3.500 - 4 0.050 3.3876 3.4019
3.750 - 4 0.050 3.6376 3.6521
4.000 - 4 0.050 3.8876 3.9023

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Indonesia, Dammam -KSA, Philippines, Belgium A563 M6 M8 M10 M12 M16 2h Hexagon Heavy Nut
France, Qatar, Europe, Thailand A563 Heavy Hex Nuts
Germany, Czechia, Thailand, Malaysia A563 Grade 8.8 10.9 HDG Heavy Hex Nut
USA, Malaysia, Bangladesh, Finland A563 High Strength Alloy Steel Hex Nut
Brazil, Saudi Arabia (KSA), South Africa, Kuwait ASME/ANSI B18.2.2 Heavy Hex Nut A563-Dh Zinc Plated
Bahrain, South Africa, Singapore Fastener A563 Grade DH Hex Heavy Nut
Australia, Philippines, UK, Nigeria A563 Heavy Hex Nuts M8-1.5
Malaysia, Oman, Hong Kong A563 Gr C, Dh, A194 2h Finish Hex Nuts Carbon Steel Nut
Italy, Chile, Iran, Singapore -A563 Hexagon Head Heavy Nut Black
Turkey, United Arab Emirates (UAE), Norway Nut A563 10s Dacromet
Malaysia, Netherlands, Russia hexagonal Head High Strength Nuts A563 Dh Zinc Plated
Spain, Egypt, Mexico, UK, Singapore High Strength ASTM A563 Black Hex Nut

Dimension standard of astm a563 hex nuts

ASTM A563 Nut and A563M Grade A/Dh Coupling/Hex Nuts dimensions (13)

**All measurements in millimeters**

Nominal Size or Basic Major Thread Diameter

F

G

H

Width
Across Flats

Width
Across Corners

Thickness

Basic

Max

Min

Max

Min

Basic

Max

Min

1/4

.2500

7/16

.438

.428

.505

.488

7/32

.226

.212

5/16

.3125

1/2

.500

.489

.577

.557

17/64

.273

.258

3/8

.3750

9/16

.562

.551

.650

.628

21/64

.337

.479

7/16

.4375

11/16

.688

.675

.794

.768

3/8

.385

.365

1/2

.5000

3/4

.750

.736

.866

.840

7/16

.448

.427

9/16

.5625

7/8

.875

.861

1.010

.982

31/64

.496

.473

5/8

.6250

15/16

.938

.922

1.083

1.051

35/64

.559

.535

3/4

.7500

1-1/8

1.125

1.088

1.299

1.240

41/64

.665

.617

7/8

.8750

1-5/16

1.312

1.269

1.516

1.447

3/4

(Video) IFI standard Gr. 5 and Class 8 DIN934 hex nut live demo

.776

.724

1

1.0000

1-1/2

1.500

1.450

1.732

1.653

55/64

.887

.831

1-1/8

1.1250

1-11/16

1.688

1.631

1.949

1.859

31/32

.999

.939

1-3/8

1.3750

2-1/16

2.062

1.994

2.382

2.273

1-11/64

1.206

1.138

1-1/2

1.500

2-1/4

2.250

2.175

2.598

2.480

1-9/32

1.ASTM A194 GR. 8

1.245

1-5/8

1.6250

2-7/16

2.438

2.356

2.815

2.686

1-25/64

1.429

1.353

1-3/4

1.7500

2-5/8

2.625

2.538

3.031

2.893

1-1/2

1.540

1.460

2

2.0000

3

3.000

2.900

3.464

3.306

1-23/32

1.763

1.675

2-1/4

2.2500

3-3/8

3.375

3.263

3.897

3.719

1-15/16

1.986

1.890

2-1/2

2.5000

3-3/4

3.750

3.625

4.330

4.133

2-5/32

2.209

2.105

2-3/4

2.7500

4-1/8

4.125

3.988

4.763

4.546

2-3/8

2.431

2.319

get astm a563 anchor bolt and Lock Nuts Chemical Composition and mechanical properties

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A563 Coupling Nuts

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A563 Flange Nuts

F563 Hex Nuts

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Stainless Steel F563 T Nuts

F563 Dome Nuts

ISO Approved A563 Eye Nuts

F563 Nuts

A563 Hex Nuts

F563 T But

F563 Nylock Insert Nuts

A563 Nuts

SF563 Nuts

Stainless Steel F563 Panel Nuts

F563 Heavy Hex Nuts

F563 Locking Nuts

F563 Lock Nuts

F563 Panel Nuts

F563 Stainless Steel Washer

F563 Acorn Nuts

Stainless Steel F563 Wing Nuts

A563 Panel Nuts

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FAQs

What ASTM nut is a replacement for a A563 DH nut? ›

An A194 Grade 2H nut can always be substituted for an A563 Grade DH nut. In fact, the ASTM A563 nut specification specifically states that substituting an A194 Grade 2H is acceptable.

What is ASTM A563 Grade A? ›

Governing StandardsGrade A

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.

What grade is a DH nut? ›

Grade DH nuts are heavy hex nuts made from medium carbon steel that have been heat treated. Designed and recommended to secure F3125 A490 structural bolts in assemblies, these nuts are often marked by the letters “DH”, although they are not required to be marked unless specified by the purchaser.

What is the difference between 2H and DH nuts? ›

Grade 2HM hex nuts are manufactured in a similar way, yet deliver lower levels of proof load stress and hardness. Often 2H nuts can be substituted for 2HM, although the reverse may not be true. Grade DH hex nuts are formed from medium carbon steel materials and need to be heat treated and quenched.

What is the difference between A194 and A563? ›

ASTM A563 is the most commonly referenced ASTM specification for carbon and alloy steel nuts. It includes 8 grades and covers sizes from 1/4" to 4". ASTM A194 covers carbon and alloy steel nuts that are intended for use in high pressure and/or high temperature applications.

What nuts go with A325 bolts? ›

The recommended grade of nut for an ASTM A325 structural bolt is ASTM A563 Grade D, DH, or C. ASTM A194 2H is also an acceptable substitute. These ASTM grades are all high strength and go through a heat treating process required to develop their mechanical characteristics.

What is a grade A hex nut? ›

Grade A nuts are used with low carbon steel heavy hex bolts. Grade 5 are used with medium carbon cap screws and bolts. Grade C nuts are recommended to be used with A325 structural bolts. Grade 2H nuts are recommended for use in high pressure and high temperature service.

What does A194 mean? ›

ASTM A194 Grade 2HM is a standard material specification for high tensile nuts and other internally threaded fasteners, made from carbon steel. Grade 2HM nuts can be produced by means of hot forging, cold forging or machining from heat treated bar stock.

What is a bolt grade? ›

The grade of a bolt determines the maximum amount of stress (tensile strength) that the bolt can handle. Tensile strength is the amount of pull the bolt can withstand before breaking. The method used for tightening the bolt is also dependent upon the grade of the bolt.

What does DH stand for with nut? ›

Extreme-Strength Steel Extra-Wide Hex. Nuts for Structural Applications—Grade DH. These nuts are designed to secure ASTM A325 bolts in structural joints. Also known as heavy hex nuts, they are about 10% wider and taller than standard hex nuts.

Is A563 structural? ›

The ASTM A563 specification covers carbon and alloy steel nuts for general structural and mechanical uses on bolts, studs, and other externally threaded parts.

What is a structural nut? ›

Structural Nuts are medium carbon steel, heat treated and hardened with a metric class of 8. Structural Nuts are for use with Structural Bolts and are designed for steel-to-steel structural connections such as buildings and bridge construction.

How are hex nuts marked for strength? ›

Nuts fabricated by cutting from hex bar stock shall be grade marked with notches at the hexagon corners, one notch at each comer for Grade 5, two notches at each corner for Grade 8. Grade 2 nuts are not required to be marked for grade identification.

What grade is a 2H nut? ›

A194 2H nuts are a common high strength nut used with many different bolt grades, including A193 Grade B7, A325, A490, F1554 Grade 105 and others. Occasionally Portland Bolt will be asked to provide A194 Grade 2HM nuts, most often with A193 Grade B7M.

What is 2H material? ›

ASTM A194 Grade 2H is a standard material specification for high tensile nuts and other internally threaded fasteners, made from carbon steel. Grade 2H nuts can be produced by means of hot forging, cold forging or machining from heat treated bar stock.

What is the difference between A307 and A325? ›

Compared to A307 bolts, A325 are generally higher strength. As such, they are used for different applications. The ultimate tensile strength of A325 bolts is 120 ksi, double that of an A307 A grade bolt.

What replaced ASTM A325? ›

Note: In 2016, ASTM A325 was officially withdrawn and replaced by ASTM F3125, in which A325 now becomes a grade under the F3125 specification. The F3125 specification is a consolidation and replacement of six ASTM standards, including; A325, A325M, A490, A490M, F1852, and F2280.

What is the difference between A325 and Grade 8 bolts? ›

A325 bolts are typically manufactured from a medium carbon steel (although they can be made from an alloy) while SAE grade 8 bolts are made from a medium carbon alloy steel. Grade 8 bolts are significantly stronger than an A325. An ASTM specification with similar strength properties to grade 8 is ASTM A490.

What is ASTM A194? ›

The ASTM A194 specification covers a variety of carbon, alloy, and martensitic stainless steel nuts in the size range 1⁄4 through 4 in. and metric M6 through M100 nominal. ASTM A194 also covers austenitic stainless steel nuts in the size range 1⁄4 in. and M6 nominal and above.

What is A194 Grade 2H? ›

ASTM A194 Grade 2H is a standard material specification for high tensile nuts and other internally threaded fasteners, made from carbon steel. Grade 2H nuts can be produced by means of hot forging, cold forging or machining from heat treated bar stock.

What grade is a A325 bolt? ›

The A325 bolt strength, or SAE grade 5 bolt strength, is usually used for structural bolting projects.

What is the difference between a hex nut and a heavy hex nut? ›

What is the difference between a standard hex nut and a heavy hex nut? A standard hex nut, also referred to as a finished hex nut, has a smaller width across the flats and corners compared to a heavy hex nut, and a heavy hex nut is slightly thicker than a standard hex nut of the same nominal size.

Is grade A the same as Grade 5? ›

Grade A is a low tensile nut and is used with grade 2 bolts; grade B is used with a Grade 5 bolt and grade C with a Grade 5 bolt.

What does ASTM A193 mean? ›

ASTM A193 defines both SI (Metric) and inch-pound units. Grade B7 is a heat-treated chromium-molybdenum low-alloy steel with minimum tensile strength requirement of 125 ksi (860 Mpa), yield 105 ksi (720 Mpa), and maximum hardness of 35HRC.

What is the difference between 2H and 2HM nuts? ›

Both 2H and 2HM nuts have the same chemical composition. Grade 2H nuts have a higher proof load requirement.

Is ASTM A194 stainless steel? ›

The ASTM A194 specification covers a variety of carbon, alloy, and martensitic stainless steel nuts in the size range 1⁄4 through 4 in.

What is B7M material? ›

Grade B7M is a heat-treated chromium-molybdenum alloy steel with minimum tensile requirement of 100 ksi, yield of 75 ksi and maximum hardness of 99 HRB. ASTM A193 specification covers requirements for chemical composition, mechanical properties, hardness, heat-treatment, recommended nuts-washrs for Grade B7M fasteners.

What is the difference between A307 and A325? ›

Compared to A307 bolts, A325 are generally higher strength. As such, they are used for different applications. The ultimate tensile strength of A325 bolts is 120 ksi, double that of an A307 A grade bolt.

Which is stronger A325 or Grade 8? ›

A325 bolts are typically manufactured from a medium carbon steel (although they can be made from an alloy) while SAE grade 8 bolts are made from a medium carbon alloy steel. Grade 8 bolts are significantly stronger than an A325. An ASTM specification with similar strength properties to grade 8 is ASTM A490.

Is A490 stronger than A325? ›

A490 bolts are more susceptible to brittle fracture than A325 bolts which are 120/105 minimum tensile strength steel. To minimize the risk of brittle fracture A490 bolts have both a minimum and a maximum tensile strength specified. FHWA recommends that A325 bolts be used wherever possible.

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