Carriage Bolt AdaptersCarriage Bolt Adapters allow use of any length carriage bolt where you would otherwise use a Tufbolt. The adapters raise the neck of a carriage bolt so it doesn't touch the sign face or work surface. Made of black Nylon, they are designed to prevent the head of the bolt from being grasped and turned. The 5/16" size can also be used with a 1/4" carriage bolt.
Tufnut Price Sheet