SELF-TAPING SCREW

A self-tapping screw has a hexagonal head (3) and a shank divided into two main sections. The two-thirds of the shank (2) has a helical thread. The last third (1) of the shank is of larger diameter than the shank but of smaller diameter than the helical thread (D1). The screw tip has two opposing cu...

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Bibliographische Detailangaben
Hauptverfasser:	JOCHMANN SVEN, FERLEMANN FELIX, DAUBINGER GERD, SPIELBERG DANIEL E, RAHMSDORF HORST
Format:	Patent
Sprache:	eng ; pol
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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Beschreibung
Zusammenfassung:	A self-tapping screw has a hexagonal head (3) and a shank divided into two main sections. The two-thirds of the shank (2) has a helical thread. The last third (1) of the shank is of larger diameter than the shank but of smaller diameter than the helical thread (D1). The screw tip has two opposing cutting edges (14), each with a swarf recess (13) rising towards the threaded section.