Diameter: 8mm Length: 70mm Material: Steel Finish: Red Rinsed Zinc Head Style: Carriage Thread Size: 1.25mm (Coarse) Thread Length: 22mm Hardness: Class 8.8 Style: Short Neck Type: Carriage Bolt Box of 84. 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.
