Abstract: An exhibiting container for fasteners includes at least one holding portion formed on an outer circumference of a body portion of a bottle, a lodging zone recessed into a bottom of the bottle, an opening formed on a cap for communicating with an outside and an accommodating space of the body portion, and at least one connecting unit formed on the cap for fitting in with and inserting into the lodging zone. Accordingly, the exhibiting container is held easily by using the holding portion. With the matching cooperation of the lodging zone and the connecting unit, a plurality of exhibiting containers is firmly piled up and is not blocked off with each other, whereby fasteners stored in the exhibiting container are exhibited entirely. The opening allows users to take the fasteners out of the accommodating space directly and easily, which increases the convenience of use efficiently.

Abstract: A wood screw includes a plurality of cutting areas radially disposed on a conical bottom surface of a head and a smooth area formed between the cutting areas. Each cutting area has at least two grooves, each of which has a base different from each smooth area and two rib walls protruding from the base. The rib walls of two adjacent grooves meet to form a first cutting edge. Each cutting area further has two outer walls protruding from the smooth area. Each outer wall meets one rib wall of the adjacent groove on a second cutting edge. The cutting edges cut and scrape off burrs attached to a drilled hole. The cutting edges cooperate with the grooves to permit a continuous cutting action simultaneously with an increasing accommodation area for scraped burrs and prevent the burrs from sticking out from the head. Thus, the fastening effect is promoted.

Abstract: The present invention pertains to a bimate screw providing with a first section alternating with a second threaded section; wherein, the second threaded section has a smaller outer diameter than the first threaded section, and further a plurality of concavities are disposed on each thread of the second threaded section for defining two flanks therein. In this manner, both the first and the second threaded sections facilitate to sever and shatter cuttings so as to reduce the screwing resistance and prevent the object from being damaged under the accumulation of cuttings; simultaneously, the bimate screw effectively attains to a good resistance of extraction from the object by the concavities receiving the remaining cuttings which are not guided out of the object.

Abstract: A screw with low drilling resistance comprises a head portion, a shank portion, a plurality of first threads, a drilling portion, and a plurality of second threads. Wherein, a plurality of opening slots are correspondingly defined on the second threads, and a first included angle of the first threads is smaller than a second included angle of the second threads. Thereby, the opening slots on the second threads efficiently provide the first threads with an auxiliary cutting effect and preferably offers a debris accommodating room. The first threads including the smaller first included angle favorably reinforce the bearing force of the second threads including the larger second included angle, thereby promoting the cutting effect of the screw and allowing a speedy screwing.

Abstract: A screw includes a positioning member defined on inclined cutting planes of a drilling portion of the screw for stably allowing a cutting edge constructed at a convergence of the cutting planes to cut efficiently. A threaded section formed on a shank of the screw is extended toward the cutting edge and connected with one end of the cutting edge. The positioning member helps the screw fixedly stand on an object. The cutting edge and the cutting planes allow cutting debris to be swiftly and smoothly extruded therefrom into the threaded section for avoiding the piling of the considerable cutting debris. Thereby, the screwing torque is reduced and the drilling speed is promoted. Preferably, the fastened screw is sunken in the object, and the fastening operation is completed successfully.

Abstract: A screw includes a positioning member defined on inclined cutting planes of a drilling portion of the screw for allowing a cutting edge constructed at a convergence of the cutting planes to cut stably and efficiently. A main threaded section formed on a shank of the screw is extended to connect with one end of the cutting edge. The positioning member helps the screw fixedly stand on an object. The cutting edge and the cutting planes allow cutting debris to be swiftly and smoothly extruded therefrom into the main threaded section for avoiding the accumulation of considerable cutting debris. Thereby, the screwing resistance is reduced and the drilling speed is promoted. Preferably, the fastened screw is firmly sunk in the object, and the fastening operation is completed successfully.

Abstract: A screw includes a positioning member defined on inclined cutting planes of a drilling portion of the screw for stably allowing a cutting edge constructed at a convergence of the cutting planes to cut efficiently. A threaded section formed on a shank of the screw is extended toward the cutting edge and connected with one end of the cutting edge. The positioning member helps the screw fixedly stand on an object. The cutting edge and the cutting planes allow cutting debris to be swiftly and smoothly extruded therefrom into the threaded section for avoiding the piling of the considerable cutting debris. Thereby, the screwing torque is reduced and the drilling speed is promoted. Preferably, the fastened screw is sunken in the object, and the fastening operation is completed successfully.

Abstract: A screw with low drilling resistance comprises a head portion, a shank portion, a plurality of first threads, a drilling portion, and a plurality of second threads. Wherein, a plurality of opening slots are correspondingly defined on the second threads, and a first included angle of the first threads is smaller than a second included angle of the second threads. Thereby, the opening slots on the second threads efficiently provide the first threads with an auxiliary cutting effect and preferably offers a debris accommodating room. The first threads including the smaller first included angle favorably reinforce the bearing force of the second threads including the larger second included angle, thereby promoting the cutting effect of the screw and allowing a speedy screwing.

Abstract: A self-drilling screw is in particular to a drill portion having a non-threaded first drilling section connecting with the shank and a second drilling section connecting with said first drilling section and forms two grooves therein. Moreover, the whole first drilling section is formed as an oval-shaped pillar and it has two ridges extending therefrom. Furthermore, the diameter of the first drilling section is smaller than the diameter of the second drilling section, and the length of the second drilling section is between the length of one-third drill portion and the length of two-thirds drill portion. Therefore, due to the aforesaid features and the two drilling sections, the molds for manufacturing the screws suffer less damage while in operation and the manufacturing cost is therefore reduced. The present invention is also good at increasing the screwing speed. Moreover, the surface of the first drilling section also has the function of allowing the user to engrave a mark thereon.

Abstract: The present invention pertains to a punch for forming recessed screw comprising a punch body and a punch head. Particularly, the punch head includes two square portions having different heights and square sides and intersecting at an included angle, thereby punching the corresponding tiers of recesses in the socket of the screw head. In this manner, the screw can be facilely driven by a screwdriver presenting a square configuration or a uniform shape as the punch, which facilitates to reduce the problem of unfitted driving tool and increase the convenience while in operation.