The Cartridge,20 Millimeter, cataloged under National Stock Number 1305-00-596-9994, is classified within Federal Supply Class 1305 (Ammunition, Through 30mm) of the Ammunition and Explosives group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1305-00-596-9994 |
| Primary Part Number | LD289041 |
| Item Name | Cartridge,20 Millimeter |
| FSC / FSG | 1305 / 13 — Ammunition, Through 30mm |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Weapon for Which Designed | GUN MK11, ALL MODS AND GUN MK12, ALL MODS |
| Tracer Element | NOT INCLUDED |
| Dot Proper Shipping Name | CARTRIDGES FOR WEAPONS, INERT PROJECTILE |
| Dot Identification Number | UN0339 |
| Unable to Decode | UNABLE TO DECODE |
| Dot Registration Code | EX1988040334 |
| Projectile Model Number | MK 11 MOD 0 LOCATION NOT OTHERWISE SPECIFIED |
| Cartridge Model Number | MK 105 MOD 0 LOCATION NOT OTHERWISE SPECIFIED |
| Dod Ammunition Code | 1305-A811 |
| Detonation Initiation Method | ELECTRIC |
| Hazardous Material Classification Code | 1.4 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION |
| Unable to Decode | UNABLE TO DECODE |
| Cartridge Grouping Type | SINGLE ROUND |
| Material | STEEL CARTRIDGE CASE |
| Gross Weight | 173.0 SHIPPING CONTAINER POUNDS AND 3418.0 PALLET POUNDS |
| 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 |
| Part Number | Manufacturer |
|---|---|
| LD289041 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 1305-A811 | 6/9 Informative reference only U.S. Government activity |
NSN 1305-00-596-9994 is a Cartridge,20 Millimeter, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 1305, Ammunition, Through 30mm. Status: active.
NSN 1305-00-596-9994 has 1 manufacturer part number on file: LD289041 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 1305-00-640-8285. Verify interchangeability with system specifications before substitution.
Key specifications for LD289041: Weapon for Which Designed: GUN MK11, ALL MODS AND GUN MK12, ALL MODS; Tracer Element: NOT INCLUDED; Dot Proper Shipping Name: CARTRIDGES FOR WEAPONS, INERT PROJECTILE; Dot Identification Number: UN0339. 15 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 1305-00-596-9994 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.