Nominal Size, inches

E

F

G

H

L_T

Body Dia

Width Across Flats

Width Across Corners

Height

Thread Length For Screw Lengths

Up to 6 "

Over 6"

Max

Min

Max

Min

Max

Min

Max

Min

Basic

Basic

.500

.500

.482

.875

.850

1.010

.969

.323

.302

1.25

1.50

.625

.625

.605

1.062

1.031

1.227

1.175

.403

.378

1.50

1.75

.750

.750

.729

1.250

1.212

1.443

1.383

.483

.455

1.75

2.00

.875

.875

.852

1.438

1.394

1.660

1.589

.563

.531

2.00

2.25

1.00

1.00

.976

1.625

1.575

1.876

1.796

.627

.591

2.25

2.50

1.125

1.125

1.098

1.812

1.756

2.093

2.002

.718

.658

2.50

2.75

1.25

1.250

1.223

2.00

1.938

2.309

2.209

.813

.749

2.75

3.00

1.375

1.375

1.345

2.188

2.119

2.526

2.416

.878

.810

3.00

3.25

1.50

1.50

1.470

2.375

2.30

2.742

2.622

.974

.902

3.25

3.50

1.75

1.75

1.716

2.75

2.662

3.175

3.035

1.134

1.054

3.75

4.00

2.00

2.00

1.964

3.125

3.025

3.608

3.449

1.263

1.175

4.25

4.50

2.25

2.25

2.214

3.50

3.388

4.041

3.862

1.423

1.327

4.75

5.00

2.50

2.50

2.461

3.875

3.750

4.474

4.275

1.583

1.479

5.25

5.50

2.75

2.75

2.711

4.25

4.112

4.907

4.688

1.744

1.632

5.75

6.00

3.00

3.00

2.961

4.625

4.475

5.34

5.102

1.935

1.815

6.25

6.50