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ASTM A193, ASME B18.2.1 Heavy Hex bolts, Inch Series-NINGBO BOLT

 

ASTM A193 Bolts Specification

 

ASTM A193 Heavy Hex Screws

 

ASTM A193M Metric Heavy Hex Bolts

 

ASTM A193M Metric Heavy Hex Screws

Dimensions of ASME B18.2.1 Heavy Hex Bolts

Nominal Size or
Basic product Diameter

Full Size Body Diameter, E

Width Across Flats, F

Width Across Corners, G

Head Height, H

Radius of Fillet, R

Thread Length for
Bolt Lengths, LT

6 in. and Shorter

Over 6 in.

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Nom

Nom

3/8

0.3750

0.388

0.360

0.688

0.669

0.794

0.763

0.268

0.226

0.03

0.01

1.000

1.250

1/2

0.5000

0.515

0.482

0.875

0.850

1.010

0.969

0.364

0.302

0.03

0.01

1.250

1.500

5/8

0.6250

0.642

0.605

1.062

1.031

1.227

1.175

0.444

0.378

0.06

0.02

1.500

1.750

3/4

0.7500

0.768

0.729

1.250

1.212

1.443

1.383

0.524

0.455

0.06

0.02

1.750

2.000

7/8

0.8750

0.895

0.852

1.438

1.394

1.660

1.589

0.604

0.531

0.06

0.02

2.000

2.250

1

1.000

1.022

0.976

1.625

1.575

1.876

1.796

0.700

0.591

0.09

0.03

2.250

2.500

1 1/8

1.1250

1.149

1.098

1.812

1.756

2.093

2.002

0.780

0.658

0.09

0.03

2.500

2.750

1 1/4

1.2500

1.277

1.223

2.000

1.938

2.309

2.209

0.876

0.749

0.09

0.03

2.750

3.000

1 3/8

1.3750

1.404

1.345

2.188

2.119

2.526

2.416

0.940

0.810

0.09

0.03

3.000

3.250

1 1/2

1.5000

1.531

1.470

2.375

2.300

2.742

2.622

1.036

0.902

0.09

0.03

3.250

3.500

1 5/8

1.6250

1.658

1.591

2.562

2.481

2.959

2.829

1.116

0.978

0.09

0.03

3.500

3.750

1 3/4

1.7500

1.785

1.716

2.750

2.662

3.175

3.035

1.196

1.054

0.12

0.04

3.750

4.000

1 7/8

1.8750

1.912

1.839

2.938

2.844

3.392

3.242

1.276

1.130

0.12

0.04

4.000

4.250

2

2.000

2.039

1.964

3.125

3.025

3.608

3.449

1.388

1.175

0.12

0.04

4.250

4.500

2 1/4

2.2500

2.305

2.214

3.500

3.388

4.041

3.862

1.548

1.327

0.19

0.06

4.750

5.000

2 1/2

2.5000

2.559

2.461

3.875

3.750

4.474

4.275

1.708

1.479

0.19

0.06

5.250

5.500

2 3/4

2.7500

2.827

2.711

4.250

4.112

4.907

4.688

1.869

1.632

0.19

0.06

5.750

6.000

3

3.000

3.081

2.961

4.625

4.475

5.340

5.102

2.060

1.815

0.19

0.06

6.250

6.500

 

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Address:Panjiashan, Xiepu Town,

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TEL: 86-574-86231358

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