Midwest Fastener Bolt Carriage Zinc 1/2X12 1158

Diameter: 1/2 Length: 12 Material: Steel Finish: Zinc Head Style: Carriage Thread Size: 13 (Coarse) Thread Length: Partial Hardness: Grade 2 / A307 Type: Carriage Bolt Square-Depth: 9/32 Box of 25. 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.