A carriage bolt has a domed or countersunk head, and the shank is topped by a short square section under the head. The square section grips into the part being fixed (typically wood), preventing the bolt from turning when the nut is tightened.
Diameter: 1/4″
Length: 5-1/2″
Material: Steel
Finish: Zinc
Head Style: Carriage
Thread Size: 20 (Coarse)
Thread Length: Full
Hardness: Grade 2 / A307
Type: Carriage Bolt
Square-Depth: 5/32″
Diameter: 5/8″
Length: 3-1/2″
Material: Steel
Finish: Zinc
Head Style: Carriage
Thread Size: 11 (Coarse)
Thread Length: Full
Hardness: Grade 2 / A307
Type: Carriage Bolt
Square-Depth: 11/32″
Diameter: 1/2″
Length: 3-1/2″
Material: Steel
Finish: Zinc
Head Style: Carriage
Thread Size: 13 (Coarse)
Thread Length: Full
Hardness: Grade 2 / A307
Type: Carriage Bolt
Square-Depth: 9/32″
