Types of Fasteners Standards Products

ASTM A194 Grade 7 Hex Nuts

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Specification

CHEMICAL & MECHANICAL COMPOSITION

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ASTM A194 Grade 7 Hex Nuts

ASME SA194 Gr 7 Heavy Hex Nuts manufacturer in India, ASTM A194 Nut Prices, ASTM A194 Gr 7 Nut Suppliers in Mumbai.

Detailed Information

Prashaant Steel & Alloys is a well-known Grade 7 Hex Nuts maker and retailer. We manufacture ASTM A194 Grade 7 Hex Nuts with the best quality raw materials from our vast inventory. Prashaant Steel & Alloys produces Grade 7 Hex Nuts of excellent quality and has carved out a niche for itself in the industry. Our Grade 7 Hex Nuts are highly common and are used in a number of industries due to their high strength and reliability. Prashaant Steel & Alloys has a well-equipped production facility that can fill huge orders of ASTM A194 Grade 7 Hex Nuts in a range of sizes and diameters. We manufacture Grade 7 Hex Nuts and export them to all of the world’s big cities. We store our goods in suitable wooden boxes and ship them with all appropriate paperwork to prevent product degradation during shipping.

ANSI B18.2.2 is also known as ASTM A194 Gr 7 Heavy Hex Nuts. Here, the width and thickness is higher than hex nuts. There are numerous grades for this and the pattern is used for larger diameter and high strength bolts. A194 Gr 7 Heavy Hexagon Nuts are used by using materials like high tensile steel and stainless steel. These are manufactured by forming a proper method, size and its types. 

ASME SA194 Grade 7 Nuts are thus in huge demand as they are used in many chemical industries and hence the manufacturing companies keep this in stock. ASTM A194 Grade 7 washer is used in industries like petrochemical, power plants, food processing plants, oil and gas etc. These are tested by using advanced methods and technology and later on introduced in the market. 

ASTM A194 Grade 7 Nuts are mostly used in industries like engineering and other construction projects. This is resistant to sulphuric acid concentrations up-to 5% at temperatures as high as 12 degrees. The threads used in this are ASME B1.12A/3A, dimension it has is of ASME B18.21. This is the product which is not hardened by heat, it only hardens if it is cold working. These have great resistance to chemical attack compared to chromium nickel austenitic steel. The A194 Gr 7 Hex nuts size ranges from ¼ to 4. This works on high temperature and high pressure.

ASTM A194 Grade 7 Hex Nuts most common specification:

Standards

Designation

ASTM

A194 Grade 7: 410 Stainless Steel, Quenched and Tempered.

 

Threads Configuration

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

Mandatory Requirements

Free from Mercury & Radioactive Contamination

Dimensions

ASME B18.2.1, B18.3

Additional Certifications

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

Additional Requirements

NACE MR0103/MR0175/ISO 15156 Compliance

Certification

Dual Certified As per ASTM & ASME Codes

ASTM A194 Grade 7 Washer Chemical Structure:

Composition

Percentage (%)

C.

0.37-0.49%

Mn.

0.65-1.10%

Si.

0.15-0.35%

P.

0.035%.

S.

0.04%

Cr.

0.75-1.2%

Ni.

Mo.

0.15-0.25

Mechanical Analysis of SA 194 Grade 7 Nuts:

Nominal Size, In.

Temperature °F

Proof Load Stress, ksi

Hardness Rockwell

Material

1/4 – 4

1100

80

C38

Medium Carbon Alloy Steel, Quenched and Tempered

Available Sizes of ASTM A194 Gr 7 Nuts:

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

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

10

17

8

5

10

12

19

10

6

12

14

22

11

7

14

16

24

13

8

16

18

27

15

9

18.5

Dimensional Chart of ASME SA194 Gr 7 Hex Nuts:

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

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

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

.776

.724

1

1.0000

1-1/2

1.500

1.450

1.732

1.653

55/64

.887

.831

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

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

A194 Grade 7 Heavy Hex Nuts Dimensions:

Diameter (D)

Body Diameter (D)

Across the Flats (F)

Across the Corners ©

Head Height (H)

Thread Lengths (T)

MAX

MIN

MAX

MIN

MAX

MIN

MAX

MIN

< 6”

> 6”

1/2

0.515

0.482

0.875

0.85

1.01

0.969

0.364

0.302

1.25

1.5

5/8

0.642

0.605

1.062

1.031

1.227

1.175

0.444

0.378

1.5

1.75

3/4

0.768

0.729

1.25

1.212

1.443

1.383

0.524

0.455

1.75

2

7/8

0.895

0.852

1.438

1.394

1.66

1.589

0.604

0.531

2

2.25

1

1.022

0.976

1.625

1.575

1.876

1.796

0.7

0.591

2.25

2.5

1 1/8

1.149

1.098

1.812

1.756

2.093

2.002

0.78

0.658

2.5

2.75

1 1/4

1.277

1.223

2

1.938

2.309

2.209

0.876

0.749

2.75

3

1 3/8

1.404

1.345

2.188

2.119

2.526

2.416

0.94

0.81

3

3.25

1 1/2

1.531

1.47

2.375

2.3

2.742

2.622

1.036

0.902

3.25

3.5

1 3/4

1.785

1.716

2.75

2.662

3.175

3.035

1.196

1.054

3.75

4

2

2.039

1.964

3.125

3.025

3.608

3.449

1.388

1.175

4.25

4.5

2 1/4

2.305

2.214

3.5

3.388

4.041

3.862

1.548

1.327

4.75

5

2 1/2

2.559

2.461

3.875

3.75

4.474

4.275

1.708

1.479

5.25

5.5

2 3/4

2.827

2.711

4.25

4.112

4.907

4.688

1.869

1.632

5.75

6

3

3.081

2.961

4.625

4.475

5.34

5.102

2.06

1.815

6.25

6.5

Application of ASME SA194 Gr 7 Nuts:

  • Power Generation

  • Petrochemicals

  • Gas Processing

  • Pharmaceuticals

  • Sea Water Equipment

 

 

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