the purpose of a carriage bolt is to fasten metal to wood.
what is the purpose of a carriage bolt?
to fasten metal to wood
carriage bolt





























a carriage bolt, coach bolt or round head square neck bolt is a form of bolt used to fasten metal to wood.
carriage bolt
carriage bolts were developed for use through iron strengthening plates on either side of a wooden beam, the squared section fitting into a square hole in the ironwork. it is commonplace though to use them to bare timber, the squared section giving enough grip to prevent rotation.





























carriage bolts are extensively used for security fixings, such as locks and hinges, where the bolt must only be removable from one side. the smooth domed head and square nut below prevent the carriage bolt from being unlocked from the insecure side.





























section::::timber bolts.
carriage bolt