Bolt - Carriage, Ribbed Neck, ANSI (in)

Written by Matt Milbury on . Posted in Bolt Datasheets

  • SME Standards

    • ASME B18.5

  • Length (L) of a carriage bolt is measured from underside of head to the end of the bolt.

  • * Tolerance on #10 through 1/2" sizes for lengths 7/8" and shorter shall be +0.031 and -0.000.

Nut

Nut

Bolt

Size

Body Diameter


C

Head Diameter


A

Head Height


B

Head to Ribs

for Length of

D

Number of Ribs

Diameter Over Ribs

E

Depth Over Ribs

for Length of

F

Max

Min

Max

Min

Max

Min

7/8 and

Shorter

±0.031 *

1" and

Longer

±0.031 *

Approx

Min

7/8 and

Shorter

±0.031

1" and

1 1/8

±0.031

1 1/4 and

Longer

±0.031

#10

0.199

0.182

0.469

0.438

0.114

0.094

0.031

0.063

9

0.210

0.250

0.407

0.594

1/4

0.260

0.237

0.594

0.563

0.145

0.125

0.031

0.063

10

0.274

0.250

0.407

0.594

5/16

0.324

0.298

0.719

0.688

0.176

0.156

0.031

0.063

12

0.340

0.250

0.407

0.594

3/8

0.388

0.360

0.844

0.782

0.208

0.188

0.031

0.063

12

0.405

0.250

0.407

0.594

7/16

0.452

0.421

0.969

0.907

0.239

0.219

0.031

0.063

14

0.470

0.250

0.407

0.594

1/2

0.515

0.483

1.094

1.032

0.270

0.250

0.031

0.063

16

0.534

0.250

0.407

0.594

5/8

0.642

0.605

1.344

1.219

0.344

0.313

0.094

0.094

19

0.660

0.313

0.438

0.625

3/4

0.768

0.729

1.594

1.469

0.406

0.375

0.094

0.094

22

0.785

0.313

0.438

0.625