The Cartridge,20 Millimeter, cataloged under National Stock Number 1305-00-182-3158, is classified within Federal Supply Class 1305 (Ammunition, Through 30mm) of the Ammunition and Explosives group. Government technical data includes 27 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1305-00-182-3158 |
| Item Name | Cartridge,20 Millimeter |
| FSC / FSG | 1305 / 13 — Ammunition, Through 30mm |
| Status | ACTIVE |
| Weapon for Which Designed | GUN, M61 SERIES |
| Cartridge Grouping Functional Sequence | 9-1 |
| Cartridge Quantity | 100 |
| Tracer Element | INCLUDED |
| Net Explosive Weight | 0.09193 STORAGE POUNDS AND 0.09193 TRANSPORTATION POUNDS |
| Dot Proper Shipping Name | CARTRIDGES FOR WEAPONS, INERT PROJECTILE |
| Projectile Filler Type | TRACER COMPOSITION PACK BARREL |
| Projectile Filler Type | INERT MATERIAL CLIPPED |
| Link Feed Direction | RIGHT-HAND |
| Dot Identification Number | UN0339 |
| Unable to Decode | UNABLE TO DECODE |
| Dot Registration Code | EX1988070737 |
| Projectile Model Number | M55A2 CLIPPED |
| Projectile Model Number | M221 PACK BARREL |
| End Link Model Number | MK7 |
| Cartridge Model Number | M55A2 CLIPPED |
| Cartridge Model Number | M220 PACK BARREL |
| Dod Ammunition Code | 1305-A664 |
| Detonation Initiation Method | ELECTRIC |
| Hazardous Material Classification Code | 1.4 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION |
| Unable to Decode | UNABLE TO DECODE |
| Package Reference Number | X11075838 US ARMY AND 54/187 US NAVY US |
| Link Model Number | MK7MOD0 |
| Material | COPPER ALLOY CARTRIDGE CASE PACK BARREL |
| Material | COPPER ALLOY CARTRIDGE CASE CLIPPED |
| Gross Weight | 92.0 SHIPPING CONTAINER POUNDS AND 2343.0 PALLET POUNDS |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY CARTRIDGE GROUPING FUNCTIONAL SEQUENCE;LINK MODEL NUMBER;WEAPONFOR WHICH DESIGNED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL G — Ammunition & Explosives |
| Hazard | No hazard code in the DLA record (HMIC N) UN ID UN0339 · 1.4 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION · ships as CARTRIDGES FOR WEAPONS, INERT PROJECTILE |
| Criticality Code | N |
| Reference | Meaning |
|---|---|
| 7259146 | 3/1 Design control — primary reference Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| 7258817 | 5/1 Secondary reference Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| 1305-A664 | 6/9 Informative reference only U.S. Government activity |
NSN 1305-00-182-3158 is a Cartridge,20 Millimeter, classified under FSC 1305, Ammunition, Through 30mm. Status: active.
8 possible matches (shared part number, not a government interchangeability claim): 1305-00-182-3254, 1305-00-522-3700, 1305-00-522-3701. Verify interchangeability with system specifications before substitution.
Key specifications for 1305-00-182-3158: Weapon for Which Designed: GUN, M61 SERIES; Cartridge Grouping Functional Sequence: 9-1; Cartridge Quantity: 100; Tracer Element: INCLUDED. 27 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 1305-00-182-3158 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.