ADVANCED NUT AND BOLT

A vibration resistant fastening system (10) including a high fatigue strength bolt (12) made from a first material and a nut (14) made from a second material that is softer than the first material of the bolt. The bolt includes bolt threads (26) and the nut includes pre-tapped nut threads (30) that...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	CORBETT, ROBERT J, WOLLARD, JAMES L
Format:	Patent
Sprache:	eng ; fre
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 vibration resistant fastening system (10) including a high fatigue strength bolt (12) made from a first material and a nut (14) made from a second material that is softer than the first material of the bolt. The bolt includes bolt threads (26) and the nut includes pre-tapped nut threads (30) that match with the bolt threads. The fastening system utilizes a combination of unique geometry of the nut and bolt threads (26, 30) and a hardness differential between the nut and bolt to provide vibration resistance. When tightened, crests (32) of the bolt threads embed into the soft bearing flanks (42) of the nut threads. Simultaneously with the bolt crest (32) embedment, the softer nut thread crests (38) flow radially inward into the root radius of the bolt threads. This complete contact between the nut and the bolt restricts the nut from moving in a transverse direction relative to a longitudinal axis of the bolt.