The utility model discloses a novel
deck screw used for
hardwood and free of pre-drilling and damage to the surface of a wood board. The novel
deck screw comprises a screwing head, a main body rod, a square conical
tail, sawtooth threads and a
chip guide groove. According to the screw, on one hand, in the process that the square cone
tail is screwed into wood, compared with screws of the same type, the hole
diameter is enlarged, and the situation that the surface of a high-density
solid wood board cracks and tilts to form burrs due to the fact that the high-density
solid wood board is affected by
stress concentration is facilitated; on the other hand, the sawtooth threads are beneficial to smashing thick and large wood
chip particles into fine wood
chip particles, burrs and hard blocks in the hole
diameter are removed in the screwing-in process, the situation that wood chips block the hole, the screwing-in difficulty is increased is avoided, meanwhile, more fine wood chip particles are adsorbed, the fastening degree of connection between the screw and the high-density
solid wood board is improved, and the service life of the screw is prolonged. And the use stability of the high-density
solid wood board is greatly improved.