The Warhead,5 Inch Rocket,chemical a, cataloged under National Stock Number 1340-00-021-9523, is classified within Federal Supply Class 1340 (Rockets, Rocket Ammunition and Rocket Components) 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 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1340-00-021-9523 |
| Primary Part Number | LD251335 |
| Item Name | Warhead,5 Inch Rocket,chemical a |
| FSC / FSG | 1340 / 13 — Rockets, Rocket Ammunition and Rocket Components |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Net Explosive Weight | 19.360001 STORAGE POUNDS AND 19.360001 TRANSPORTATION POUNDS |
| Dot Registration Code | EX1988030697 |
| Unable to Decode | UNABLE TO DECODE |
| Dod Ammunition Code | 1340-H929 |
| Hazardous Material Classification Code | 1.2.1 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION |
| Unable to Decode | UNABLE TO DECODE |
| Package Reference Number | WR-54/33A US NAVY A |
| Gross Weight | 2819.0 SHIPPING CONTAINER POUNDS AND 2819.0 PALLET FLEET, US NAVY POUNDS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL G — Ammunition & Explosives |
| Hazard | No hazard code in the DLA record (HMIC N) 1.2.1 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| 657056 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| LD251335 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 1340-H929 | 6/9 Informative reference only U.S. Government activity |
NSN 1340-00-021-9523 is a Warhead,5 Inch Rocket,chemical a, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 1340, Rockets, Rocket Ammunition and Rocket Components. Status: active.
NSN 1340-00-021-9523 has 2 manufacturer part numbers on file: 657056 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), LD251335 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 6515-01-139-8902. Verify interchangeability with system specifications before substitution.
Key specifications for LD251335: Net Explosive Weight: 19.360001 STORAGE POUNDS AND 19.360001 TRANSPORTATION POUNDS; Dot Registration Code: EX1988030697; Unable to Decode: UNABLE TO DECODE; Dod Ammunition Code: 1340-H929. 8 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 1340-00-021-9523 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.