Countersunk Bolts

Countersunk Bolts

Countersunk bolts are used when a smooth surface is required. Common applications include: bridge decking, walkways, and railing.


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DIMENSIONS

Bolt Diameter

D

F

H

Body Diameter

Head Diameter

Head Height

Max

Max Edge Sharp

Min Edge Sharp

Absolute Min Rounded

Max

Min

1/2

0.515

0.935

0.905

0.845

0.269

0.233

5/8

0.642

1.169

1.132

1.066

0.336

0.292

3/4

0.768

1.402

1.357

1.285

0.403

0.349

7/8

0.895

1.637

1.584

1.511

0.470

0.408

1

1.022

1.869

1.810

1.735

0.537

0.466

1-1/8

1.149

2.104

2.037

1.962

0.604

0.525

1-1/4

1.277

2.337

2.262

2.187

0.671

0.582

1-3/8

1.404

2.571

2.489

2.414

0.738

0.641

1-1/2

1.531

2.804

2.715

2.640

0.805

0.698


STOCK

Superior Bolt does not stock Countersunk bolts.  These bolts are manufactured to order


THREAD LENGTH

Bolt lengths ≤ 6": Thread length = (2 X diameter) + 1/4"
Bolt lengths > 6": Thread length = (2 X diameter) + 1/2"