Vibration resistant fasteners

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Nut – and means to engage substructure on its opposite faces...

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Details

411332, 411531, 411959, F16B 39282

Patent

active

048424633

ABSTRACT:
A self-locking fastener having a bearing surface comprising a plurality of sets of serrations arranged to penetrate a workpiece such that while a resistance to the loosening of the fastener from the workpiece is created the marring of the workpiece surface is minimized. Use of the fastener is particularly advantageous if the workpiece consists of soft materials such as cast-aluminum or non-heat treated carbon steels. Each set of serration, when viewed as a profile, includes a downwardly inclined surface, a relatively deeper serration and a relatively shallower intermediate serration. The intermediate serration controls the depth of the penetration into a workpiece.

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