The Projectile,5 Inch 54 Caliber, cataloged under National Stock Number 1320-00-070-3423, is classified within Federal Supply Class 1320 (Ammunition, Over 125mm) 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 21 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 1320-00-070-3423 |
| Primary Part Number | 2141490 |
| Item Name | Projectile,5 Inch 54 Caliber |
| FSC / FSG | 1320 / 13 — Ammunition, Over 125mm |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Model Number | MK 48 MOD 1 |
| Unit Package Type | PALLET, ADAPTER AND PALLET, METAL |
| Design Type | ILLUMINATING |
| Tracer Element | NOT INCLUDED |
| Net Explosive Weight | 3.9889 STORAGE POUNDS AND 3.9889 TRANSPORTATION POUNDS |
| Fuze Model Number | MK 25 MOD 4,5,MK 342 MOD 0,1 |
| Dot Proper Shipping Name | AMMUNITION, ILLUMINATING |
| Proximity Fuze Adaptability | NOT ADAPTABLE |
| Dot Identification Number | UN0254 |
| Dot Registration Code | EX1988040900 |
| Unable to Decode | UNABLE TO DECODE |
| Dod Ammunition Code | 1320-D353 |
| Supplementary Charge | NOT INCLUDED |
| Fuze Type | MECHANICAL TIME |
| Hazardous Material Classification Code | 1.3 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION |
| Unable to Decode | UNABLE TO DECODE |
| Booster Model Number | MK 89 MOD 0 |
| Package Reference Number | MILSTD1323 US NAVY |
| Gross Weight | 3723.0 PALLET POUNDS |
| Weapon and Model Number for Which Designed | MK 16 ALL MODS,MK 18 ALL MODS,MK 19 ALL MODS GUN |
| Self-Destroying Feature | NOT INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL G — Ammunition & Explosives |
| Hazard | No hazard code in the DLA record (HMIC N) UN ID UN0254 · 1.3 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION · ships as AMMUNITION, ILLUMINATING |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2141490 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| LD615133 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 1320-D353 | 6/9 Informative reference only U.S. Government activity |
NSN 1320-00-070-3423 is a Projectile,5 Inch 54 Caliber, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 1320, Ammunition, Over 125mm. Status: active.
NSN 1320-00-070-3423 has 2 manufacturer part numbers on file: 2141490 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), LD615133 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
4 possible matches (shared part number, not a government interchangeability claim): 1320-00-128-1086, 1320-00-731-4498, 1320-01-034-3387. Verify interchangeability with system specifications before substitution.
Key specifications for 2141490: Model Number: MK 48 MOD 1; Unit Package Type: PALLET, ADAPTER AND PALLET, METAL; Design Type: ILLUMINATING; Tracer Element: NOT INCLUDED. 21 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 1320-00-070-3423 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.