Abstract: A nail structure has a main body having a long section with a slantedly threaded surface. One end of the main body forms a sharp end, while the other end there of has an enlarging ring end with cone shape. Also, the other end of the main body has a head end, and a neck section is formed between the head end and the ring end. When the main body pokes through a fixed unit to attach the fixed unit to a wall surface or structure, the long section is in an engaging status due to the threads on the long section surface, and when the ring end is inserted into the wall or structure, it generates a stopping effect so that the main body of the nail cannot be easily pulled out. Also, the head end is restricted by the fixed unit towards the wall or structure to secure the fixed unit.

Abstract: A multi-shank nail has a first shank, a second shank and a washer; wherein both of the first shank and the second shank have an enlarged head at their top ends and a point at their lower ends. The first shank has a flat contact surface along its longitudinal length at an upper portion, and the second shank has a shape of a longitudinally cut nail such that the second shank is capable of corresponding to the contact surface on the first shank. The first shank has an inclined face and an extended portion in sequence below the contact surface. At least one of the first shank or second shank comprises a plurality of notches opposite the contact surface, and the notches make the first shank or second shank easier to bend.

Abstract: A multi-shank nail has a first shank, a second shank and a washer; wherein both of the first shank and the second shank have an enlarged head at their top ends and a point at their lower ends. The first shank has a flat contact surface along its longitudinal length at an upper portion, and the second shank has a shape of a longitudinally cut nail such that the second shank is capable of corresponding to the contact surface on the first shank. The first shank has an inclined face and an extended portion in sequence below the contact surface. At least one of the first shank or second shank comprises a plurality of notches opposite the contact surface, and the notches make the first shank or second shank easier to bend.

Abstract: A nail pusher includes a handle, a guide tube mounted in the handle and having a nail guide slot, a nail magazine mounted on the handle, a plurality of nails mounted in the nail magazine, a push member movably mounted in the nail magazine to push each of the nails through the nail guide slot into the guide tube, and a thrusting rod mounted on the handle and movable in the guide tube to thrust one of the nails outwardly from the guide tube. Thus, the push member is pushed to introduce each of the nails into the guide tube successively, and the nails are ejected outwardly from the guide tube successively, so that the nail pusher can push and eject the nails successively.