Nominal Size: 1/4"
Thread: 20 TPI (Coarse)
Length: 3-1/2"
Thread Length: Full
Material: Steel
Finish: Hot Dip Galvanized
Head Style: Carriage
Hardness: Grade 2 / A307
Type: Carriage Bolt
Square-Depth: 5/32"
Box of 100.
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.
