Plow Bolt vs. Carriage Bolt
Both have a square neck, but the head shape decides where each belongs.
| Feature | Plow Bolt | Carriage Bolt |
|---|---|---|
| Head | Flat, countersunk | Rounded dome |
| Neck | Square | Square (or ribbed/fin) |
| Best material | Metal wear edges | Wood |
| Finish | Sits flush | Stands proud |
| Typical use | Plow shares, grader blades | Timber, fences, decks |
Verdict
Plow bolts sit flush against sliding soil and wear plates. Carriage bolts leave a smooth dome on wood. Match the head to the surface.