The Cartridge,25 Millimeter, cataloged under National Stock Number 1305-01-199-6737, 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 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 1305-01-199-6737 |
| Primary Part Number | 1397AS590 |
| 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,GAU-12 |
| Tracer Element | NOT INCLUDED |
| Net Explosive Weight | 0.06284 STORAGE POUNDS AND 0.27231 TRANSPORTATION POUNDS |
| Fuze Model Number | M505A3 SINGLE ROUND |
| Dot Proper Shipping Name | CARTRIDGES FOR WEAPONS |
| Dot Identification Number | UN0321 |
| Dot Registration Code | EX1987120732 |
| Cartridge Model Number | PGU-25/U SINGLE ROUND |
| Dod Ammunition Code | 1305-A982 |
| Detonation Initiation Method | PERCUSSION |
| Fuze Type | POINT DETONATING SINGLE ROUND |
| Hazardous Material Classification Code | 1.2.2 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION |
| Unable to Decode | UNABLE TO DECODE |
| Cubic Measure | 0.0088 CUBIC FEET |
| Cartridge Design Type | HIGH EXPLOSIVE INCENDIARY SINGLE ROUND |
| Material | STEEL CARTRIDGE CASE SINGLE ROUND |
| Gross Weight | 139.0 SHIPPING CONTAINER POUNDS AND 2905.0 PALLET POUNDS |
| 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 |
|---|---|
| 1397AS590 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 1305-A982 | 6/9 Informative reference only U.S. Government activity |
NSN 1305-01-199-6737 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 1305-01-199-6737 has 1 manufacturer part number on file: 1397AS590 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
4 possible matches (shared part number, not a government interchangeability claim): 1305-01-250-0100, 1305-01-270-2318, 1305-01-390-7978. Verify interchangeability with system specifications before substitution.
Key specifications for 1397AS590: Weapon for Which Designed: GUN,GAU-12; Tracer Element: NOT INCLUDED; Net Explosive Weight: 0.06284 STORAGE POUNDS AND 0.27231 TRANSPORTATION POUNDS; Fuze Model Number: M505A3 SINGLE ROUND. 17 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 1305-01-199-6737 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.