Carriage Bolts: Zinc Plated Steel
Carriage heads are large smooth and domed with no drive. A low carbon steel for general use. Zinc plated for moderate corrosion resistance.
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Description
A carriage bolt has a square shoulder under a rounded head which resists turning when the nut is tightened or removed. They are good for wood-to-wood connections when the head may not be accessible for tightening. They may be used in the construction of docks, swing sets and decks as well as other surfaces where a smooth finish is needed.
Carriage bolts are pushed into a hole the same size as the shank and then hammered in the rest of the way, where the square shoulder locks it firmly in place. Used whenever a smooth finish surface is needed so that nothing becomes snagged on the fastener. Zinc plating, retards the corrosion rate in a normal atmosphere.
Carriage bolt length is measured from under the head to the end of the bolt including the square neck.
Note: Thread length on carriage bolts can vary. Some shorter lengths will be fully threaded.
Technical specifications and diagrams like shear and tensile straight ratings go here.
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