1. THE NATO CODIFICATION SYSTEM:

1.5. ITEM OF SUPPLY - IoS

The NATO Codification System is based on the "IoS concept" and requires a unique IoS Identification of each IoS. An IoS is an Item of Production which a responsible supply management authority has determined as being required to meet a specific logistics requirement.

Within the limits set by the concept, an IoS may be : 

  • A single Item of Production with a single NATO Stock Number. 

  • Two or more interchangeable Items of Production from one or several manufacturers all with a single NATO Stock Number.

  • A quality controlled, precise tolerance IoS, selected from a normal production run allocated a discrete NATO Stock Number to differentiate it from the normal item in the production run.

  • A production line IoS with a special modification and with a discrete NATO Stock Number to differentiate it from the normal item in the production run.

The various operational requirements which frequently cause an Item of Production to be used for differing purposes may validly, but not necessarily, cause an Item of Production to be referenced to more than one NATO Stock Number, due to a broader or narrower IoS concept.

[Top]