ITEM STANDARDIZATION CODE (ISC): THE CODED REPRESENTATION OF THE ITEM STANDARDIZATION DECISION ON INDIVIDUAL ITEMS. DECISIONS ARE BASED ON THE RULES AND PROCEDURES ESTABLISHED IN THE DEPARTMENT OF DEFENSE STANDARDIZATION MANUAL 4120.24-M. SEE VOLUME 10, TABLES 91 AND 92 AND QUICK INFO ON-LINE.4120.24-M. SEE VOLUME 10, TABLES 91 AND 92 AND QUICK INFO ON-LINE.
Governing regulation: HTTPS://WWW.DLA.MIL/PORTALS/104/DOCUMENTS/DLMS/CDS/MANUALS/CDTS_VOLUME_10.DOCX
Code values (11)
| Code | Meaning | Definition |
|---|---|---|
| 0 | Defense Threat Reduction Agency | ITEMS UNDER THE SPECIFICATION CONTROL OF DEFENSE THREAT REDUCTION AGENCY (DTRA) OR NATIONAL SECURITY AGENCY (NSA). |
| 1 | Result of a Formal Item Reduction Study | AN ITEM AUTHORIZED FOR PROCUREMENT AS A RESULT OF A FORMAL ITEM REDUCTION STUDY AND ACCEPTED AS A REPLACEMENT FOR ONE OR MORE ITEMS NOT AUTHORIZED FOR PROCUREMENT. IN ADDITION, IN GENERIC RELATIONSHIPS, A CODE 1 ITEM IS RELATED TO A CODE 2 ITEM. |
| 2 | Does Not Replace an Item Not Authorized for Procurement | AN ITEM AUTHORIZED FOR PROCUREMENT WHICH HAS BEEN INCLUDED IN AN ITEM REDUCTION STUDY AND WHICH INITIALLY DOES NOT REPLACE AN ITEM NOT AUTHORIZED FOR PROCUREMENT. IN ADDITION, IN GENERIC RELATIONSHIPS, A CODE 2 ITEM IS RELATED TO A CODE 1 ITEM. |
| 3 | Accepted as Not Authorized for Procurement | AN ITEM WHICH, AS A RESULT OF A FORMAL ITEM REDUCTION STUDY, IS ACCEPTED AS NOT AUTHORIZED FOR PROCUREMENT. |
| 5 | Not Yet Been Subject to Item Standardization | AN ITEM AUTHORIZED FOR PROCUREMENT THAT HAS NOT YET BEEN SUBJECT TO ITEM STANDARDIZATION. |
| 6 | Little or No Potential Exists for Elimination | AN ITEM AUTHORIZED FOR PROCUREMENT THAT IS IN A SPECIFIC FEDERAL SUPPLY CLASS (FSC) OR ITEM NAME GROUPING CONSISTING PRIMARILY OF ITEMS WHICH ARE ONE-OF-A-KIND; THEREFORE, LITTLE OR NO POTENTIAL EXISTS FOR ELIMINATION OF ITEMS THROUGH FORMAL ITEM REDUCTION STUDIES. |
| 7 | Nato Use Only | NATO USE ONLY(SEE NOTE 3). |
| 8 | Nato Use Only | NATO USE ONLY(SEE NOTE 3). |
| B | A New Item Authorized for Procurement | A NEW ITEM AUTHORIZED FOR PROCUREMENT, CONTAINED IN A NEW OR REVISED SUPERSEDING SPECIFICATION OR STANDARD, THAT REPLACES PRIOR ITEMS. |
| C | An Intelligent Decision Could Not Be Made | AN ITEM AUTHORIZED FOR PROCUREMENT THAT HAS BEEN INCLUDED IN AN ITEM REDUCTION STUDY BUT AN INTELLIGENT DECISION COULD NOT BE MADE DUE TO LACK OF SUFFICIENT TECHNICAL DATA. |
| E | No Longer Authorized for Procurement | AN ITEM NO LONGER AUTHORIZED FOR PROCUREMENT WHICH HAS BEEN REPLACED BY AN ITEM CONTAINED IN A NEW OR REVISED SUPERSEDING SPECIFICATION OR STANDARD. |
About ISC
What is ISC in FLIS / NSN cataloging?
ISC (Item Standardization) iTEM STANDARDIZATION CODE (ISC): THE CODED REPRESENTATION OF THE ITEM STANDARDIZATION DECISION ON INDIVIDUAL ITEMS. DECISIONS ARE BASED ON THE RULES AND PROCEDURES ESTABLISHED IN THE DEPARTMENT OF DEFENSE STANDARDIZATION MANUAL 4120.24-M. SEE VOLUME 10, TABLES 91 AND 92 AND QUICK INFO ON-LINE.4120.24-M. SEE VOLUME 10, TABLES 91 AND 92 AND QUICK INFO ON-LINE.
What does ISC code 0 mean?
ISC code 0 means "Defense Threat Reduction Agency". ITEMS UNDER THE SPECIFICATION CONTROL OF DEFENSE THREAT REDUCTION AGENCY (DTRA) OR NATIONAL SECURITY AGENCY (NSA).
How many ISC codes are there?
The U.S. Defense Logistics Agency defines 11 ISC (Item Standardization) code values in the FLIS published code dictionary. Each is listed on this page with its official meaning.
Last updated 2026-05-26. Published by DAITK™ against the U.S. Defense Logistics Agency (DLA) FLIS code dictionary, governed by DoD 4100.39-M (Federal Logistics Information System Procedures Manual).
The authoritative FLIS code dictionary published by DAITK™ — every cataloging field and value code, defined verbatim against the U.S. Defense Logistics Agency (DLA) FLIS standard, governed by DoD 4100.39-M. Authorized reference data, reproduced with attribution, not scraped.
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