Method of fastener identification by impressing characters into

Details Method of fastener identification by impressing characters into Method of fastener identification by impressing characters into

1998-03-16

2000-06-13

Funk, Stephen R.

Printing

Embossing or penetrating

Processes

101 5, 294011, 411378, 411923, 470 8, B44B 500

Patent

active

06073552&

ABSTRACT:
A method of fastener identification for traceability of manufacturing information of an individual fastener, is achieved by applying a code to the fastener. The fasteners to be identified typically are formed of hardened materials such as steel. A die cast, forged or pressed roll stamp or forge stamp is thus used to apply the code and is formed with a raised stencil of one or more characters or indicia. Multiple lots of a certain fastener typically are manufactured in a given time period, such as a year, thus requiring a different code to identify each fastener lot. Numbers of lots and sizes of individual lots for a given time period are difficult to predict for a fastener producer, thus risking waste if multiple customized stamps are used to identify the lots. A universal stamp having a single indicia stencil is utilized to identify all lots of a certain fastener in a given time period, by removing selected ones of the stencil characters from the universal stamp for each different lot.

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Fastening; Metric Blue.RTM. Product Group--Setting New Standards in Fastener Performance; Sep. 1997, pp. 12-14.
David Fowler, The Engineer; Getting a fix on fixings; Nov. 13, 1997.

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