1/4       0.2500

7/16

0.438

0.428

0.505

0.488

5/32

0.163

0.150

5/16      0.3125

1/2

0.500

0.489

0.577

0.557

3/16

0.195

0.180

3/8       0.3750

9/16

0.562

0.551

0.650

0.628

7/32

0.227

0.210

7/16      0.4375

11/16

0.688

0.675

0.794

0.768

1/4

0.260

0.240

1/2       0.5000

3/4

0.750

0.736

0.866

0.840

5/16

0.323

0.302

9/16      0.5625

7/8

0.875

0.861

1.010

0.982

5/16

0.324

0.301

5/8       0.6250

15/16

0.938

0.922

1.083

1.051

3/8

0.387

0.363

3/4       0.7500

1 1/8

1.125

1.088

1.299

1.240

27/64

0.446

0.398

7/8       0.8750

1 5/16

1.312

1.269

1.516

1.447

31/64

0.510

0.458

1          1.0000

1 1/2

1.500

1.450

1.732

1.853

35/64

0.575

0.518