The Contract Technical Data File/Procurement Item Description (CTDF/PID) and Procurement Specification/Drawing/Technical publications (PSDT) data includes an assortment of technical characteristic information as well as additional approved manufacturers/part numbers, drawing numbers, and military specification references. Over 4 million NIINs in the FLIS database have PID information associated with their records. The sources for this descriptive information are the four hardware DLA centers: Defense Supply Center Richmond (DSCR), Defense Supply Center Columbus–C (DSCC-C), Defense Supply Center Columbus–E (DSCC-E) and Defense Industrial Supply Center (DISC).
The Mil Spec/Standard/Drawing number information that is included on the PID/SPEC tab is received from the 4 Major DLA centers: Columbus-Electronic, Columbus-Construction, Philadelphia and Richmond.