Nominal Size or Diameter

Body or Shoulder Diameter(E)

Width Across Flats(F)

Square Lag Screws

                  Hex Lag Screws

Shoulder Length(S)

Radius of Fillet

Width Across Corners(G)

Height(H)

Width Across Corners(G)

Height(H)

Max

Min

Basic

Max

Min

Max

Min

Basic

Max

Min

Max

Min

Basic

Max

Min

Min

Max

Min

10

.199

.178

9/32

.281

.271

.398

.372

1/8

.140

.110

.323

.309

1/8

.140

.110

.094

.03

.01

1/4

.260

.237

3/8

.375

.362

.530

.498

11/64

.188

.156

--

--

--

--

--

.094

.03

.01

1/4

.260

.237

7/16

.438

.425

--

--

--

--

--

.505

.484

11/64

.188

.150

.094

.03

.01

5/16

.324

.298

1/2

.500

.484

.707

.665

13/64

.220

.186

.577

.552

7/32

.235

.195

.125

.03

.01

3/8

.388

.360

9/16

.562

.544

.795

.747

1/4

.268

.232

.650

.620

1/4

.268

.226

.125

.03

.01

7/16

.452

.421

5/8

.625

.603

.884

.828

19/64

.316

.278

.722

.687

19/64

.316

.272

.156

.03

.01

1/2

.515

.482

3/4

.750

.725

1.061

.995

21/64

.348

.308

.866

.826

11/32

.364

.302

.156

.03

.01

5/8

.642

.605

15/16

.938

.906

1.326

1.244

27/64

.444

.400

1.083

1.033

27/64

.444

.378

.312

.06

.02

3/4

.768

.729

1-1/8

1.125

1.088

1.591

1.494

1/2

.524

.476

1.299

1.240

1/2

.524

.455

.375

.06

.02

7/8

.895

.852

1-5/16

1.312

1.269

1.856

1.742

19/32

.620

.568

1.516

1.447

37/64

.604

.531

.375

.06

.02

1

1.022

.976

1-1/2

1.500

1.450

2.121

1.991

21/32

.684

.628

1.732

1.653

43/64

.700

.591

.625

.09

.03

1-1/8

1.149

1.098

1-11/16

1.688

1.631

2.386

2.239

3/4

.780

.720

1.949

1.859

3/4

.780

.658

.625

.09

.03

1-1/4

1.277

1.223

1-7/8

1.875

1.812

2.652

2.489

27/32

.876

.812

2.165

2.066

27/32

.876

.749

.625

.09

.06