Double-line screw with teeth on threads

The utility model relates to a screw, and particularly discloses a double-line screw with teeth on threads. The double-line screw comprises a main body, one end of the main body is a head part, and the other end of the main body is a drill tip part; the main body is provided with double threads, and...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	CHEN HUANGDA, FANG HONGJIA, LIU XIAOHUI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING THERMAL INSULATION IN GENERAL WEAPONS
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