HAZARDOUS CHARACTERISTICS CODE: A TWO-DIGIT ALPHANUMERIC CODE DEVELOPED PRIMARILY FOR STORAGE PURPOSES TO ASSURE THAT INCOMPATIBLE HAZARDS ARE NOT STORED NEXT TO ONE ANOTHER. THE HCC THAT IS VISIBLE IN FLIS ONLY PERTAINSTO THE LATEST FORMULATION FOR THIS CAGE/PART NUMBER. USER NEEDSTO BE AWARE THAT ADDITIONAL INFORMATION MAY RESIDE IN THE HAZARDOUSMATERIAL INFORMATION SYSTEM (HMIS) FOR A DIFFERENT FORMULATION OFTHE SAME CAGE/PART NUMBER. THE TECHNICAL DEFINITIONS ARE PROVIDEDIN THE AGENCY AND SERVICES STORAGE MANUALS (DLAM 4145.11, ARMY TM38-410, NAVSUP PUB 573, AFR 69-9, AND MCO 4450-12. THESE MANUALSARE BEING REPLACED BY DOD 4145.19-R-2). SEE VOLUME 10, TABLE 214AND QUICK INFO ON-LINE.
Code values (65)
| Code | Meaning | Definition |
|---|---|---|
| A1 | Radioactive Licensed | RADIOACTIVE, LICENSED |
| A2 | Radioactive License Exempt | RADIOACTIVE, LICENSE EXEMPT |
| A3 | Radioactive License Exempt Authorized | RADIOACTIVE, LICENSE EXEMPT, AUTHORIZED |
| B1 | Alkali Corrosive Inorganic | ALKALI, CORROSIVE, INORGANIC |
| B2 | Alkali Corrosive Organic | ALKALI, CORROSIVE, ORGANIC |
| B3 | Alkali Low Risk | ALKALI, LOW RISK |
| C1 | Acid Corrosive Inorganic | ACID, CORROSIVE, INORGANIC |
| C2 | Acid Corrosive Organic | ACID, CORROSIVE, ORGANIC |
| C3 | Acid Low Risk | ACID, LOW RISK |
| C4 | Acid Corrosive and Oxidizer Inorganic | ACID, CORROSIVE AND OXIDIZER, INORGANIC |
| C5 | Acid Corrosive and Oxidizer Organic | ACID, CORROSIVE AND OXIDIZER, ORGANIC |
| D1 | Oxidizer | OXIDIZER |
| D2 | Oxidizer and Poison | OXIDIZER AND POISON |
| D3 | Oxidizer and Corrosive Acidic | OXIDIZER AND CORROSIVE, ACIDIC |
| D4 | Oxidizer and Corrosive Alkali | OXIDIZER AND CORROSIVE, ALKALI |
| E1 | Explosive Military | EXPLOSIVE, MILITARY |
| E2 | Explosive Low Risk | EXPLOSIVE, LOW RISK |
| F1 | Flammable Liquid Dot Packing Group I Osha Ia | FLAMMABLE LIQUID, DOT PACKING GROUP I, OSHA IA |
| F2 | Flammable Liquid Dot Packing Group Ii Osha Ib | FLAMMABLE LIQUID, DOT PACKING GROUP II, OSHA IB |
| F3 | Flammable Liquid Dot Packing Group Iii Osha Ic | FLAMMABLE LIQUID, DOT PACKING GROUP III, OSHA IC |
| F4 | Flammable Liquid Dot Packing Group Iii Osha Ii | FLAMMABLE LIQUID, DOT PACKING GROUP III, OSHA II |
| F5 | Flammable Liquid and Poison | FLAMMABLE LIQUID AND POISON |
| F6 | Flammable Liquid and Corrosive Acidic | FLAMMABLE LIQUID AND CORROSIVE, ACIDIC |
| F7 | Flammable Liquid and Corrosive Alkali | FLAMMABLE LIQUID AND CORROSIVE, ALKALI |
| F8 | Flammable Solid | FLAMMABLE SOLID |
| G1 | Gas Poison | GAS, POISON (NONFLAMMABLE) |
| G2 | Gas Flammable | GAS, FLAMMABLE |
| G3 | Gas Nonflammable | GAS, NONFLAMMABLE |
| G4 | Gas Nonflammable Oxidizer | GAS, NONFLAMMABLE, OXIDIZER |
| G5 | Gas Nonflammable Corrosive | GAS, NONFLAMMABLE, CORROSIVE |
| G6 | Gas Poison Corrosive | GAS, POISON, CORROSIVE (NONFLAMMABLE) |
| G7 | Gas Poison Oxidizer | GAS, POISON, OXIDIZER (NONFLAMMABLE) |
| G8 | Gas Poison Flammable | GAS, POISON, FLAMMABLE |
| G9 | Gas Poison Corrosive Oxidizer | GAS, POISON, CORROSIVE, OXIDIZER (NONFLAMMABLE) |
| H1 | Hazard Characteristics Not Yet Determined | HAZARD CHARACTERISTICS NOT YET DETERMINED |
| K1 | Infectious Substance | INFECTIOUS SUBSTANCE |
| K2 | Cytotoxic Drugs | CYTOTOXIC DRUGS |
| M1 | Magnetized Material | MAGNETIZED MATERIAL |
| N1 | Not Regulated as Hazardous | NOT REGULATED AS HAZARDOUS |
| P1 | Peroxide Organic Dot Regulated | PEROXIDE, ORGANIC, DOT REGULATED |
| P2 | Peroxide Organic Low Risk | PEROXIDE, ORGANIC, LOW RISK |
| R1 | Reactive Chemical Flammable | REACTIVE CHEMICAL, FLAMMABLE |
| R2 | Water Reactive Chemical | WATER REACTIVE CHEMICAL |
| T1 | Dot Poison - Inhalation Hazard | DOT POISON - INHALATION HAZARD |
| T2 | Un Poison Packing Group I | UN POISON, PACKING GROUP I |
| T3 | Un Poison Packing Group Ii | UN POISON, PACKING GROUP II |
| T4 | Unpoison Packing Group Iii | UNPOISON, PACKING GROUP III |
| T5 | Pesticide Low Risk | PESTICIDE, LOW RISK |
| T6 | Health Hazard | HEALTH HAZARD |
| T7 | Carcinogen | CARCINOGEN (OSHA, NTP, IARC) |
| V1 | Miscellaneous Hazardous Materials | MISCELLANEOUS HAZARDOUS MATERIALS - CLASS 9 |
| V2 | Aerosol Nonflammable | AEROSOL, NONFLAMMABLE |
| V3 | Aerosol Flammable | AEROSOL, FLAMMABLE |
| V4 | Dot Combustible Liquid Osha Iiia | DOT COMBUSTIBLE LIQUID, OSHA IIIA |
| V5 | High Flash Point Materials Osha Iiib | HIGH FLASH POINT MATERIALS, OSHA IIIB |
| V6 | Petroleum Products | PETROLEUM PRODUCTS |
| V7 | Environmental Hazard | ENVIRONMENTAL HAZARD |
| X1 | Multiple Hazards Under One Nsn | MULTIPLE HAZARDS UNDER ONE NSN |
| Z1 | Article Containing Asbestos | ARTICLE CONTAINING ASBESTOS |
| Z2 | Article Containing Mercury | ARTICLE CONTAINING MERCURY |
| Z3 | Article Containing Polychlorinated Biphenyl | ARTICLE CONTAINING POLYCHLORINATED BIPHENYL (PCB) |
| Z4 | Article Battery Lead Acid Nonspilllable | ARTICLE, BATTERY, LEAD ACID, NONSPILLLABLE |
| Z5 | Article Battery Nickel Cadmium Nonspillable | ARTICLE, BATTERY, NICKEL CADMIUM, NONSPILLABLE |
| Z6 | Article Battery Lithium | ARTICLE, BATTERY, LITHIUM |
| Z7 | Article Battery Dry Cell | ARTICLE, BATTERY, DRY CELL |
About HCC
What is HCC in FLIS / NSN cataloging?
HCC (Hazardous Characteristics) hAZARDOUS CHARACTERISTICS CODE: A TWO-DIGIT ALPHANUMERIC CODE DEVELOPED PRIMARILY FOR STORAGE PURPOSES TO ASSURE THAT INCOMPATIBLE HAZARDS ARE NOT STORED NEXT TO ONE ANOTHER. THE HCC THAT IS VISIBLE IN FLIS ONLY PERTAINSTO THE LATEST FORMULATION FOR THIS CAGE/PART NUMBER. USER NEEDSTO BE AWARE THAT ADDITIONAL INFORMATION MAY RESIDE IN THE HAZARDOUSMATERIAL INFORMATION SYSTEM (HMIS) FOR A DIFFERENT FORMULATION OFTHE SAME CAGE/PART NUMBER. THE TECHNICAL DEFINITIONS ARE PROVIDEDIN THE AGENCY AND SERVICES STORAGE MANUALS (DLAM 4145.11, ARMY TM38-410, NAVSUP PUB 573,
What does HCC code A1 mean?
HCC code A1 means "Radioactive Licensed". RADIOACTIVE, LICENSED
How many HCC codes are there?
The U.S. Defense Logistics Agency defines 65 HCC (Hazardous Characteristics) 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.
Need NSN-cataloged items, or help decoding a record?
Dibblee Industries (NCAGE L0TZ1) supplies NATO-codified items and operates DAITK™, which queries this authorized FLIS reference data to decode and source procurement records.
Ask DAITK FLIS Code Dictionary