Bolts have a wide range of applications, especially to bond parts used to manufacture gates, fences, railings, benches, etc., therefore, especially where the bonded element is wood. Regular square under the head is used to prevent turning the screw when tightening. Any dismantling of the joints is always carried by the nut.
When looking at the final product, where the carriage bolts were used, we cannot omit a positive overall visual impression (massive smooth semicircular head). For this reason is this bolt increasingly more popular by the customers.