Carriage Bolts
Carriage Bolts
| olt Diameter | D | C | H | P | F | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Body Diameter | Head Diameter | Head Height | Square Width | Square Depth | ||||||
| Max | Min | Max | Min | Max | Min | Max | Min | Max | Min | |
| 1⁄2 | 0.515 | 0.483 | 1.094 | 1.032 | 0.270 | 0.250 | 0.515 | 0.492 | 0.281 | 0.250 |
| 5⁄8 | 0.642 | 0.605 | 1.344 | 1.219 | 0.344 | 0.313 | 0.642 | 0.616 | 0.344 | 0.313 |
| 3⁄4 | 0.768 | 0.729 | 1.594 | 1.469 | 0.406 | 0.375 | 0.768 | 0.741 | 0.406 | 0.375 |
| 7⁄8 | 0.895 | 0.852 | 1.844 | 1.719 | 0.469 | 0.438 | 0.895 | 0.865 | 0.469 | 0.438 |
| 1 | 1.022 | 0.976 | 2.094 | 1.969 | 0.531 | 0.500 | 1.022 | 0.990 | 0.531 | 0.500 |
| 11⁄4* | 1.277 | 2.850 | 0.531 | 0.500 | 1.250 | 0.625 | ||||
| *Dimensions per ASME B18.5 1990 (R 1998) cover diameters up to 1″. Bolts over 1″ use custom head dimensions. | ||||||||||
Standard Thread Lengths
| *Bolts shorter and/or smaller than those listed in the table shall have minimum thread lengths in accordance with American National Standard for Square and Hex Bolts and Screws, B18.2.1* | ||
| Diameters | Bolt length | Thread length |
|---|---|---|
3/8″, 1/2″, 5/8″, 3/4″, 7/8″, 1″ | 4″ up to less than 8″ | 3″ |
3/8″, 1/2″, 5/8″, 3/4″, 7/8″, 1″, 1-1/4″ | 8″ up to less than 12″ | 4″ |
3/8″, 1/2″, 5/8″, 3/4″, 7/8″, 1″, 1-1/4″ | 12″ and over | 6″ |
