5/16"-18 Zinc Plated Carriage Bolt
Diameter - Thread Pitch: 5/16-18
5/16"-18 Zinc plated steel carriage bolts have a domed or countersunk head, and the shank is topped by a short square section under the head.
- Square section grips into the part being fixed (usually wood)
- Preventing the bolt from turning when the nut is tightened
- Up to 6" of thread
- Bolts Over 6" in length will have a shoulder beneath the head