The Projectile,5 Inch 54 Caliber, cataloged under National Stock Number 1320-01-357-2976, is classified within Federal Supply Class 1320 (Ammunition, Over 125mm) of the Ammunition and Explosives group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1320-01-357-2976 |
| Primary Part Number | 6851439 |
| Item Name | Projectile,5 Inch 54 Caliber |
| FSC / FSG | 1320 / 13 — Ammunition, Over 125mm |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Model Number | MK159MOD1 |
| Net Explosive Weight | 8.62 STORAGE POUNDS AND 8.62 TRANSPORTATION POUNDS |
| Fuze Model Number | MK418-0 |
| Dot Proper Shipping Name | PROJECTILES |
| Proximity Fuze Adaptability | ADAPTABLE |
| Dot Identification Number | UN0168 |
| Dot Registration Code | EX1993080473 |
| Unable to Decode | UNABLE TO DECODE |
| Dod Ammunition Code | 1320-D332 |
| Fuze Type | PROXIMITY |
| Hazardous Material Classification Code | 1.1 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION |
| Unable to Decode | UNABLE TO DECODE |
| Package Reference Number | MIL-STD-1323-6 US NAVY US |
| Gross Weight | 3723.0 SHIPPING CONTAINER POUNDS AND 3723.0 PALLET FLEET, US NAVY POUNDS |
| 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 UN0168 · 1.1 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION · ships as PROJECTILES |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6851439 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 1320-D332 | 6/9 Informative reference only U.S. Government activity |
NSN 1320-01-357-2976 is a Projectile,5 Inch 54 Caliber, manufactured by Naval Sea Systems Command, classified under FSC 1320, Ammunition, Over 125mm. Status: active.
NSN 1320-01-357-2976 has 1 manufacturer part number on file: 6851439 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 1320-01-357-3498. Verify interchangeability with system specifications before substitution.
Key specifications for 6851439: Model Number: MK159MOD1; Net Explosive Weight: 8.62 STORAGE POUNDS AND 8.62 TRANSPORTATION POUNDS; Fuze Model Number: MK418-0; Dot Proper Shipping Name: PROJECTILES. 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 1320-01-357-2976 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.