004005

004005 is a numeric identifier used in various independent systems. There is no single, universal meaning for the sequence; its interpretation depends on the context in which it appears.

In library and information science, the Dewey Decimal Classification uses a top-level 000–999 structure. The number 004 corresponds to data processing, and decimal extensions are used to subdivide topics. However, 004.005 is not an official DDC designation; when encountered it is typically a local extension or an internal code within a specific library’s catalog.

In commerce and inventory management, some manufacturers assign five-digit catalog or SKU codes. 004005 could identify a particular item, part, or revision within a company’s product line. The exact meaning is determined by the issuer and catalog context.

In digital repositories and data catalogs, accession numbers or file identifiers may take forms such as 004005. Such identifiers are usually unique within their system and do not carry inherent meaning beyond identifying a record or asset.

In computing and standards, 004005 may appear as an error code, a software version tag, or part of a longer identifier. Its significance depends on the software, database, or organization that generates it.

See also numeric identifier, catalog number, Dewey Decimal Classification.