Nominal Size or Diameter

Body Diameter(D)

Head Dia.(A)

Head Height(H)

Hex Socket Size(J)

Key Engagement(T)

Fillet Extension

Max

Min

Theo-retical Sharp Max

Abs Min

Refer-ence

Flush-ness Toler-ance

Nominal

Min

Max

0

.0600

.0600

.0568

.138

.117

.044

.006

.035

.025

.006

1

.0730

.0730

.0695

.168

.143

.054

.007

.050

.031

.008

2

.0860

.0860

.0822

.197

.168

.064

.008

.050

.038

.010

3

.0990

.0990

.0949

.226

.193

.073

.010

1/16

.062

.044

.010

4

.1120

.1120

.1075

.255

.218

.083

.011

1/16

.062

.055

.012

5

.1250

.1250

.1202

.281

.240

.090

.012

5/64

.078

.061

.014

6

.1380

.1380

.1329

.307

.263

.097

.013

5/64

.078

.066

.015

8

.1640

.1640

.1585

.359

.311

.112

.014

3/32

.094

.076

.015

10

.1900

.1900

.1840

.411

.359

.127

.015

1/8

.125

.087

.015

1/4

.250

.2500

.2435

.531

.480

.161

.016

5/32

.156

.111

.015

5/16

.3125

.3125

.3053

.656

.600

.198

.017

3/16

.188

.135

.015

3/8

.3750

.3750

.3678

.781

.720

.234

.018

7/32

.219

.159

.015

7/16

.4375

.4375

.4294

.844

.781

.234

.018

1/4

.250

.159

.015

1/2

.5000

.5000

.4919

.938

.872

.251

.018

5/16

.312

.172

.015

5/8

.6250

.6250

.6163

1.188

1.112

.324

.022

3/8

.375

.220

.015

3/4

.7500

.7500

.7406

1.438

1.355

.396

.024

1/2

.500

.220

.015

7/8

.8750

.8750

.8647

1.688

1.604

.468

.025

9/16

.562

.248

.015

1

1.000

1.000

.9886

1.938

1.841

.540

.028

5/8

.625

.297

.015