Threaded fastener

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc. – Thread or shank structure

Patent

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Details

F16B 3504

Patent

active

046377670

ABSTRACT:
A thread fastener for fastening resilient material workpieces with small torque to obtain a strong fastening force, wherein the fastener is provided with equivalent height continuous thread convolutions on a shank and a plurality of spaced thread-type projections are petaliferously formed and on the equivalent height thread convolutions which are arranged at an appropriate lead angle.

REFERENCES:
patent: 3180202 (1965-04-01), Kahn
patent: 3426642 (1969-02-01), Phipard
patent: 3850074 (1974-11-01), Simons

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