The Cartridge,25 Millimeter, cataloged under National Stock Number 1305-01-198-2191, is classified within Federal Supply Class 1305 (Ammunition, Through 30mm) of the Ammunition and Explosives group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 1305-01-198-2191 |
| Primary Part Number | 1397AS690 |
| Item Name | Cartridge,25 Millimeter |
| FSC / FSG | 1305 / 13 — Ammunition, Through 30mm |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Weapon for Which Designed | GUN, CANNON M252 |
| Tracer Element | INCLUDED |
| Net Explosive Weight | 0.06284 STORAGE POUNDS AND 0.27231 TRANSPORTATION POUNDS |
| Fuze Model Number | M505A3 CLIPPED |
| Dot Proper Shipping Name | CARTRIDGES FOR WEAPONS |
| Dot Identification Number | UN0321 |
| Dot Registration Code | EX1987120731 |
| Cartridge Model Number | MK210MOD0 CLIPPED |
| Dod Ammunition Code | 1305-A981 |
| Detonation Initiation Method | PERCUSSION |
| Fuze Type | POINT DETONATING CLIPPED |
| Hazardous Material Classification Code | 1.2.2 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION |
| Link Model Number | M28 |
| Cartridge Design Type | HIGH EXPLOSIVE INCENDIARY-TRACER CLIPPED |
| Material | STEEL CARTRIDGE CASE CLIPPED |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 1397AS690 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 1305-A981 | 6/9 Informative reference only U.S. Government activity |
NSN 1305-01-198-2191 is a Cartridge,25 Millimeter, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 1305, Ammunition, Through 30mm. Status: active.
NSN 1305-01-198-2191 has 1 manufacturer part number on file: 1397AS690 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
2 possible matches (shared part number, not a government interchangeability claim): 1305-01-211-2581, 1305-01-271-7782. Verify interchangeability with system specifications before substitution.
Key specifications for 1397AS690: Weapon for Which Designed: GUN, CANNON M252; Tracer Element: INCLUDED; Net Explosive Weight: 0.06284 STORAGE POUNDS AND 0.27231 TRANSPORTATION POUNDS; Fuze Model Number: M505A3 CLIPPED. 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 1305-01-198-2191 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.