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Definition[]

Interchangeability is

[a] condition that exists when two or more items possess such functional and physical characteristics as to be equivalent in performance and durability, are capable of being exchanged one for the other without alteration on the items themselves or of adjoining items, except for adjustment, and without selection for fit and performance.[1]

References[]

  1. Defense Acquisition University, Glossary, at B-91 (13th ed. Nov. 2009) (full-text).