The Cartridge,20 Millimeter, cataloged under National Stock Number 1305-00-221-6466, is classified within Federal Supply Class 1305 (Ammunition, Through 30mm) of the Ammunition and Explosives group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1305-00-221-6466 |
| Item Name | Cartridge,20 Millimeter |
| FSC / FSG | 1305 / 13 — Ammunition, Through 30mm |
| Status | ACTIVE |
| Weapon for Which Designed | GUN M3 |
| Tracer Element | NOT INCLUDED |
| Net Explosive Weight | 0.0178 STORAGE POUNDS AND 0.08066 TRANSPORTATION POUNDS |
| Fuze Model Number | M505A3 CLIPPED |
| Dot Proper Shipping Name | CARTRIDGES FOR WEAPONS |
| Projectile Filler Type | CYCLONITE CLIPPED |
| Dot Identification Number | UN0321 |
| Unable to Decode | UNABLE TO DECODE |
| Dot Registration Code | EX1988040268 |
| Projectile Model Number | M97A2 CLIPPED |
| Cartridge Model Number | M210 CLIPPED |
| Dod Ammunition Code | 1305-A785 |
| Detonation Initiation Method | PERCUSSION |
| Fuze Type | POINT DETONATING CLIPPED |
| Hazardous Material Classification Code | 1.2.2 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION |
| Unable to Decode | UNABLE TO DECODE |
| Material | COPPER ALLOY CARTRIDGE CASE CLIPPED |
| Gross Weight | 136.0 SHIPPING CONTAINER POUNDS AND 1838.0 PALLET POUNDS |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY CARTRIDGE GROUPING,UNIT PACKAGE QUANTITY,UNIT PACKAGE TYPE AND PACKAGE MODEL NUMBER |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL G — Ammunition & Explosives |
| Hazard | No hazard code in the DLA record (HMIC N) UN ID UN0321 · 1.2.2 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION · ships as CARTRIDGES FOR WEAPONS |
| Criticality Code | N |
| Reference | Meaning |
|---|---|
| 7259105 | 5/1 Secondary reference Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| 1305-A785 | 6/9 Informative reference only U.S. Government activity |
| 7259182 | 3/1 Design control — primary reference Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
NSN 1305-00-221-6466 is a Cartridge,20 Millimeter, classified under FSC 1305, Ammunition, Through 30mm. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 1305-01-251-7837. Verify interchangeability with system specifications before substitution.
Key specifications for 1305-00-221-6466: Weapon for Which Designed: GUN M3; Tracer Element: NOT INCLUDED; Net Explosive Weight: 0.0178 STORAGE POUNDS AND 0.08066 TRANSPORTATION POUNDS; Fuze Model Number: M505A3 CLIPPED. 19 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). The government record also carries hazard data: DOT hazard class, UN number, or related classification fields. Special handling, storage, and shipping requirements apply per the cited government fields.
NSN 1305-00-221-6466 has DEMIL Code G. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.