TAPPING SCREW

PROBLEM TO BE SOLVED: To provide a tapping screw which has excellent chamfer, and besides, is drivable by small thrust. SOLUTION: A taper screw shaft 3b whose taper angle is set at from 9 deg. to 14 deg. and cross sectional shape is formed into an approximate triangle, is continued to the front part...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	IDE MASAAKI, MATSUBARA HIROYUKI
Format:	Patent
Sprache:	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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